CN205849593U - Inside femur side, outside list condyle prosthese and femoral bone pulley prosthese - Google Patents

Abstract

Disclose single condyle prosthese (301) and femoral bone pulley prosthese (401) outside a kind of femur medial unicondylar prosthese (201) and femur side.Described femur medial unicondylar prosthese includes: articular surface, described articular surface be during motion of knee joint with inside patella and the surface that contacts of medial side of tibial plateau, it shows as the segmental arc (203) on first oval (38) in sagittal plain, shows as the segmental arc (95) on first circular (94) on Coronal；And face, inboard, described inboard face is adjacent femur condyle osteotomy surface and the part of bone cement after described prosthese is inserted, show as at the inboard face postartis of straight in cross-section (202), and inboard face distal portion (209) consistent with articular surface segmental arc (203).The prosthese utilizing disclosure above-described embodiment can more press close to the geometric shape of normal human's femur condyle, and simplifies the design parameter value of various different model femoral prosthesis.

Description

Inside femur side, outside list condyle prosthese and femoral bone pulley prosthese

Technical field

It relates to artificial knee joint prosthesis, between being specifically related to be applied in early days inside knee joint between room, outside room and The separate room chamber replacement prosthese of patellofemoral joint osteoarthritis.

Background technology

Knee joint is divided into room between three, is respectively between inner side that between room, outside room between room and kneecap stock.Knee joint bone in early days Arthritis (OA) can involve any one room, but especially based on room between involving inside knee joint.The most kneed power Alignment offset inboard (Varus deformity), causes between inner side room abrasion too much, causes condyle and corresponding medial tibial in femur to put down Platform cartilage surface is thinning, strip off.Between Nei Ce, room OA classical symptom is Varus deformity, pain companion joint friendship rope, hyperosteogeny formation and side Ligamena collateralia relaxes.Expectant treatment or non-operative treatment measure are (such as nonsteroidal anti-inflammatory analgetic, articular cartilage nutrition protection medicine Thing, intra-articular injection hyaluronic acid, knee joint brace etc.) only the patient of slight OA there is is certain curative effect.And when expectant treatment without During effect, inside knee joint between room list condyle replacement (Unicompartmental Knee Arthroplasty, UKA) be ultimate controlling Treatment mode.Between inside knee joint, room UKA refers to that shin femoral joint face, excision kneed inner side, i.e. medial femoral far-end are being bent The part articular cartilage face directly contacted with medial tibial plateau when stretching activity, and corresponding tibial plateau joint Cartilage surface.Its operation purpose is to go to retain natural joint structure with minimum operation wound as far as possible, is finally reached more preferable function Recovering, the total knee arthroplasty for may carry out later retains enough residue bone amount and operation leeway simultaneously.And along with Implants material and the improvement of process technology, the selection being more suitable for of case indication, and the raising of operation skill, between inner side The curative effect of room UKA is more and more approved.Between Wai Ce, between room and kneecap stock, OA incidence rate in room is considerably less than room OA between inner side, but Therapeutic Principle, with room OA between inner side, the most also needs to carry out UKA prosthetic replacement.

Between interior outside, UKA prosthese in room can be divided into again tibial side UKA prosthese (outside UKA prosthese in tibial plateau) and femur side UKA prosthese (ectocondyle UKA prosthese in femur)；Between kneecap stock, room UKA prosthese is divided into coaster (portion) UKA prosthese and patellar prosthesis.Compare In tibial side UKA prosthese, the design of femur side UKA prosthese is even more important, because it directly affects postoperative knee joint merit Energy.Unanimously think both at home and abroad at present: the femur side UKA prosthese of ectocondyle geometric properties design in normal human's femur, It is provided that the sensation of movement closest to Normal Knee.But in femur, the geometric shape feature abnormalities of ectocondyle is complicated, does not has Generally acknowledge to consistent.People are initially considered that in femur that ectocondyle is circular, and rotate 1 around a fixing axle.Have the most again Person thinks that ectocondyle is spiral type in femur, and rotary shaft is not fixing, but there is an instantaneous center of rotation 2.On The nineties in century, scholars support that ectocondyle is circular and that rotary shaft is fixing viewpoint 3-5 in femur again.Especially nuclear-magnetism sagittal The application of bit scan, ectocondyle is to be constituted 6-9 by two circles in sagittal plain in femur more to make these researcheres believe firmly.These are not With theory, result in different biomechanicss and kinesiology experimental result, and directly affects ectocondyle UKA prosthese in femur Design.It is such as the circular theory of single curvature according to femur condyle, design and the Oxford list condyle prosthese that goes out；According to femur condyle The theory being made up of two or more circles, design and the Miler-Galante prosthese that goes out, etc..But in current femur , all there is shortcoming more or less in ectocondyle UKA prosthese.Such as Oxford list condyle prosthese (Oxford UKA): although long term follow-up knot Fruit is preferable, but prosthese does not mate with femur condyle shape, causes prosthese and femur condyle to have a deeper groove being worn away； And due to its single curvature circle design feature, Oxford list condyle prosthese can not recover the lower limb line of force of patient's Varus deformity. The shape of other kinds of UKA prosthese is not mated in the majority with condyles inside and outside femur, during this causes knee sprung in art Patella and the shock of prosthese, easily cause pain and operative failure.Femoral bone pulley geometric shape is to manufacture femoral bone pulley UKA prosthese Basic, but the geometric properties of femoral bone pulley more complicated difficult is released, so outside people simplify coaster UKA prosthese and are designed as having Turn over groove, and correspondingly patella surface is carried out convex displacement.

In the femur that prior art produces, ectocondyle UKA prosthese, femoral bone pulley UKA prosthese do not have and ectocondyle, femur in femur The good form of coaster is mated.This form is not mated and is caused patella and the shock of prosthese during knee sprung, causes in the wrong Knee joint pain, prosthetic loosening, final operative failure.Even if as Oxford list condyle prosthese occurs shock probability less slightly, but it is according to femur Interior condyle is that the circular design of single curvature forms.Result of this is that and cause UKA prosthese front and condyle remaining bone in femur A deeper groove is there is between matter.Prove motion of knee joint or prosthese are used the longevity although this groove does not has clinical evidence Life has an impact, but in fact this groove is exactly femur distalmost end place, its height cannot recover to cause knee joint Varus deformity without Method is corrected.If in order to correct Varus deformity, the height that prosthese is laid must be made, then may result in flexing process this time In, the shock of patella and prosthese, and the method for medial collateral ligament of not loosening in the list condyle surgical technic of Oxford, itself be also for Prevent the dislocation of sliding shim.

Utility model content

In view of one or more problems of the prior art, it is proposed that a kind of knee joint single condyle prosthese and coaster prosthese.

According to an aspect of this disclosure, it is proposed that a kind of femur side medial unicondylar prosthese, including: articular surface, described pass Nodal section be during motion of knee joint with inside patella and the surface that contacts of medial side of tibial plateau, it shows as in sagittal plain Segmental arc on first ellipse, shows as the segmental arc in the first circle on Coronal；And face, inboard, described medial surface is described Prosthese is adjacent femur condyle osteotomy surface and the part of bone cement after inserting, and shows as at the inboard face postartis of straight in cross-section, and The inboard face distal portion consistent with articular surface segmental arc.

According to some embodiments, described femur side medial unicondylar prosthese also includes: the first column, is arranged on described inboard On face, corresponding to the center of circle second column of described first ellipse, it is arranged on described inboard face, corresponding to described first ellipse Focus.

According to some embodiments, the end of the front side of described femur side medial unicondylar prosthese is formed with screw hole, institute The direction stating the lock screw that screw hole is formed as being inserted is different from the direction of the first column and the second column.

According to some embodiments, the major axis of the first ellipse is perpendicular to femur mechanical axis, and its center of circle is corresponding in femur Condyle medial collateral ligament attachment point.

According to some embodiments, corresponding first ellipse shown as in sagittal plain on every aspect collects on three dimensions Closing, they constitute complete femur medial unicondylar prosthese shape, and their center of circle overlaps in sagittal plain, and major and minor axis direction one Causing, the line coincident in whole centers of circle is in wearing condyle line TEA and being perpendicular to Whiteside line.

According to some embodiments, on visual angle, axle position, described prosthese placement direction is for being parallel to Whiteside line and vertical In wearing condyle line TEA, and outside prosthese, there is a straight limit, be parallel to Whiteside line and be perpendicular to wear condyle line TEA, and interior Arc limit, side is arc-shaped, and to adapt to condyle far-end profile in femur, the curvature on arc limit, front is corresponding to the circular parameter of grinding tool, bottom Curvature for Coronal the first circle.

According to some embodiments, the angular range of the segmental arc on described first ellipse is 150 degree to 200 degree, described first The angular range of the segmental arc in circle is 50 degree to 90 degree.

According to another aspect of the present disclosure, it is proposed that single condyle prosthese outside a kind of femur side, including: articular surface, described pass Nodal section is the surface contacted with outside patella and outside tibial plateau during motion of knee joint, and it shows as in sagittal plain Segmental arc on second ellipse, shows as the segmental arc on the 3rd ellipse on Coronal；And face, inboard, described inboard face is described Prosthese is adjacent femur condyle osteotomy surface and the part of bone cement after inserting, and shows as at the inboard face postartis of straight in cross-section, and The inboard face distal portion consistent with articular surface segmental arc.

According to some embodiments, outside described femur side, single condyle prosthese also includes: the 3rd column, is arranged on described inboard On face, corresponding to the focus of described second ellipse.

According to some embodiments, outside described femur side, the end in the distally of single condyle prosthese is formed with screw hole, institute The direction stating the lock screw that screw hole is formed as being inserted is different from the direction of the 3rd column.

According to some embodiments, corresponding second ellipse shown as in sagittal plain on every aspect collects on three dimensions Closing, they constitute complete lateral side of femur list condyle prosthese shape, and their center of circle sagittal plain overlaps, and major and minor axis direction one Causing, the line coincident in whole centers of circle is in wearing condyle line TEA and being perpendicular to Whiteside line.

According to some embodiments, at visual angle, axle position, described prosthese placement direction is for being parallel to Whiteside line and being perpendicular to Wear condyle line TEA, and inside prosthese, have a straight limit, be parallel to Whiteside line and be perpendicular to wear condyle line TEA, and outside Arc limit is arc-shaped, and to adapt to femoral lateral condyle far-end profile, the curvature on arc limit, front is corresponding to circular curvature parameters, and bottom is The curvature of the segmental arc of Coronal the 3rd ellipse.

According to some embodiments, the angular range of the segmental arc on described second ellipse is 120 degree to 160 degree, the described 3rd The angular range of the segmental arc on ellipse is 50 degree to 90 degree.

Another further aspect according to the disclosure, it is proposed that a kind of femoral bone pulley prosthese, including: articular surface, described articular surface is The surface contacted with facies articularis patellae during motion of knee joint, it shows as in the 4th ellipse or circle in sagittal plain Segmental arc and the section arc spatial aggregation in the 5th ellipse or circle；And face, inboard, described inboard face is adjacent after described prosthese is inserted Connect the part of femoral bone pulley portion osteotomy surface and bone cement, show as the inboard face consistent with femoral bone pulley articular surface form.

According to some embodiments, the described 4th oval or circular and the 5th ellipse or circle are with concentric arrangement, and concentric shafts is empty It is parallel between wear condyle line TEA, and is perpendicular to Whiteside line.

According to some embodiments, there is a column center of described femoral bone pulley prosthese, and surrounding has four screw hole To lay lock screw.

The prosthese utilizing disclosure above-described embodiment can more press close to the geometric shape of normal human's femur condyle, and letter Change the design parameter value of various different model femoral prosthesis.

Accompanying drawing explanation

In order to be illustrated more clearly that disclosure embodiment or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, for those of ordinary skill in the art Speech, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, in the accompanying drawings:

Figure 1A is to describe according to condyle sagittal plain profile in the knee joint of the prosthese of disclosure embodiment, condyle in signal femur Ellipse principle and feature；

Figure 1B is to describe according to coaster sagittal plain profile inside the knee joint of the prosthese of disclosure embodiment, signal femur Inner side coaster ellipse principle and feature, and the relation oval with condyle in femur；

Fig. 2 is the knee joint femoral coaster recess sagittal plain profile signal describing the prosthese according to disclosure embodiment Feature circular herein；

Fig. 3 is knee joint femoral ectocondyle and the femoral bone pulley sagittal plain profile describing the prosthese according to disclosure embodiment Signal femoral lateral condyle ellipse principle and feature, and the relation circular with femoral bone pulley herein；

Fig. 4 A and Fig. 4 B be describe the knee joint sagittal plain femur condyle according to the prosthese of disclosure embodiment oval and Circular structure overlap schematic diagram, signal femur condyle is to be made up of and feature oval and circle；

Fig. 5 is the knee joint corona view describing the prosthese according to disclosure embodiment, and in signal femur, ectocondyle is by justifying Shape and ellipse are constituted and feature；

Fig. 6 shows the sagittal plain view of condyle UKA prosthese in the femur according to disclosure embodiment；

Fig. 7 shows the corona view of condyle UKA prosthese in the femur according to disclosure embodiment；

Fig. 8 shows the axle position view of condyle UKA prosthese in the femur according to disclosure embodiment；

Fig. 9 is the three-dimensional view of condyle UKA prosthese in the femur describing disclosure embodiment；

Figure 10 A is to describe the operation and corresponding instrumentation inserted according to condyle UKA prosthese in the femur of disclosure embodiment Schematic diagram；

Figure 10 B is to describe the operation and corresponding instrumentation inserted according to condyle UKA prosthese in the femur of disclosure embodiment Schematic diagram；

Figure 11 is the sagittal plain view describing the femoral lateral condyle UKA prosthese according to disclosure embodiment；

Figure 12 is the corona view describing the femoral lateral condyle UKA prosthese according to disclosure embodiment；

Figure 13 is the three-dimensional view describing the femoral lateral condyle UKA prosthese according to disclosure embodiment；

Figure 14 A and Figure 14 B is to describe the aufbauprinciple of the femoral bone pulley UKA prosthese according to disclosure embodiment and stand respectively Stereogram.

Detailed description of the invention

The specific embodiment of the disclosure is described more fully below, it should be noted that the embodiments described herein is served only for citing Illustrate, be not limited to the disclosure.In the following description, in order to provide thorough understanding of this disclosure, a large amount of spy is elaborated Determine details.It will be apparent, however, to one skilled in the art that: these specific detail need not be used to carry out these public affairs Open.In other instances, in order to avoid obscuring the disclosure, do not specifically describe known material or method.

UKA prosthese (including condylus medialis femoris, condylus lateralis femoris and femoral bone pulley articular surface) according to disclosure embodiment, Its profile most presses close to normal human's femur condyle and the geometric properties in coaster portion.Following one or more embodiments detail this Ellipse principle and be applied to the method for designing of UKA.One or more embodiments will show with graphic form.But these illustrate and say Bright it is not limiting as disclosure application innovative content to be protected.Each diagram and explanation will be associated with other diagrams.

According to one or more embodiments, the UKA prosthetic element that the disclosure provides includes: condylus medialis femoris, lateral side of femur Condyle and femoral bone pulley displacement parts.They can be used alone the situation in room, specific separate room osteoarthritis, it is also possible to associating It is applied to the situation of the osteoarthritis of two or three rooms.Specifically, described condylus medialis femoris UKA prosthetic element refers to Articulated type coupling part in room during motion of knee joint and between tibial medial；Described condylus lateralis femoris UKA prosthetic element refers to knee joint Articulated type coupling part in room during motion and between lateral of tibia；When described femoral bone pulley UKA prosthetic element refers to motion of knee joint with The corresponding part of patella.Any of which UKA prosthetic element all includes prosthetic joint face and face, prosthese inboard.It should be noted that " front " used herein refers to the veutro towards human body；" afterwards " refers to the dorsal part towards human body；" interior " refers to towards trunk Axis；" outward " refers to trunk axis；" closely " refers to the rostral towards human body；" far " refers to the caudal towards human body, Etc..Similarly, the description of " sagittal plain ", " Coronal " and " axle position " defines with anatomical planes." trunnion axis " sensing " front " " afterwards " direction is also parallel to ground；" vertical axis " sensing " far " " closely " direction is also perpendicular to ground.In general, UKA prosthese unit " solstics " of part refers to the farthest contact point set up when knee joint is stretched completely with corresponding tibia support member；UKA prosthese unit " rearmost point " of part refers to the UKA prosthese rear eccentric throw maximum of points perpendicular with " solstics ".UKA prosthetic element " Front point " refer to the UKA prosthese front eccentric throw maximum of points contrary with " rearmost point ".

The embodiment that the disclosure describes is shown as left femur UKA prosthetic element.Right side femur UKA prosthetic element and left side Femur UKA prosthetic element is sagittal plain mirror image.Therefore, we state that the characteristic principle of femur UKA prosthese described herein is equal It is applicable to left knee joint or the configuration of right knee joint.It should be noted that the femoral bone pulley UKA prosthetic designs of the disclosure includes that " displacement patella closes Nodal section " and the prosthese of " not replacing facies articularis patellae " two kinds of situations.The wherein femoral bone pulley UKA prosthese of " displacement facies articularis patellae " Relative to " not replacing facies articularis patellae " prosthese, devise the corresponding coaster groove of patella and angle.

According to one or more embodiments of the disclosure, in sagittal plain, in femur, facies malleolaris lateralis profile is by oval structure Becoming, inside and outside trochoid facial contour is made up of oval and/or circle, and on Coronal, in femur, facies malleolaris lateralis profile is by ellipse Constitute with circle.

Such as, in femur, condyle UKA prosthese is designed structure with the principle that sagittal plain is oval and Coronal is circular.In sagittal On position, in femur, each aspect of facies artieularis malleolaris is oval set, and they constitute condyles in complete femur on three dimensions Shape.Wherein in femur, the direction of condyle articular cartilage face is worn condyle line (TEA) for being perpendicular to and is parallel to the concentric of Whiteside line Oval structure.On Coronal, in femur, facies artieularis malleolaris shows as one section of arc of circle.

For another example, femoral lateral condyle UKA prosthese is designed structure with the principle that sagittal plain is oval and Coronal is oval.In sagittal On position, each aspect of femoral lateral condyle articular surface is oval set, and they constitute complete femoral lateral condyle portion on three dimensions Shape.Femoral lateral condyle is oval slightly smaller compared with condyle ellipse in femur, and its long axis direction is oval in turning clockwise with reference to condyle in femur Certain angle.The direction of femoral lateral condyle articular cartilage face is worn condyle line (TEA) for being perpendicular to and is parallel to the concentric of Whiteside line Oval structure.On Coronal, femoral lateral condyle articular surface shows as one section of arc of ellipse.

According to embodiment of the disclosure, femoral prosthesis coaster UKA prosthese is designed structure with oval and circular principle.? In sagittal plain, each aspect of whole femoral bone pulleys all can oval or circle performance.They constitute complete on three dimensions Femoral bone pulley portion structure.Inside femur, each aspect of trochoid cartilage surface sagittal plain is oval set, and the length of these ellipses Short-axis direction is identical, the center of circle concentric arrays of each ellipse.But the eccentricity of each ellipse also differs.These ellipses big The little such as sequence in Fibonacci sequence.All lateral side of femur the most rounded performances of coaster aspect, though each lateral trochlear is circular Radius size different, but the projection of its center of circle all overlaps.This straight line connecting the oval and circular center of circle of femoral bone pulley is vertical In wearing condyle line (TEA) and being parallel to Whiteside line.The parameter that in femur, condyle is oval and femoral bone pulley concave layer face is circular, certainly Whole prosthese shape and line of apsides parameter are determined.

Such as, the scanning of nuclear-magnetism (MRI) sagittal plain is kneed most preferably or the most correct position mode: at scanned knee joint In time stretching 0 degree of position, location, knee axis position is set as ectocondyle peak line direction along femur, knee joint Coronal mutually Location is set as mutually along tangent tibial plateau articular surface direction.In femur, condyle geometric properties can represent with ellipse, belongs to this ellipse One section of arc in circle.In one embodiment, condyle rearmost point eccentric throw (offset) maximum place in we choose femur Sagittal plain aspect, that is condyle intermediate surface in femur, condyle and oval relation such as Figure 1A in shown femur.From medial meniscus The front incisura recess34 that when anterior angle 33 is stretched, condyle 42 articular cartilage face 36 is formed in femur starts, to medial meniscus The rear incisura recess35 that during high flexing position, angle 43, condyle 42 is formed in femur terminates, the articular cartilage of condyle 42 in the femur of this section Face 36 is completely superposed with an ellipse 38.The major axis of this ellipse 38 is perpendicular to femur mechanical axis, and its center of circle 39 is on MRI axial scan Corresponding to condyle medial collateral ligament attachment point 123 in femur.In one embodiment, the semi-major axis of this ellipse 38 is 31mm, and half is short Axle is 25mm, and eccentricity is 0.591.In another embodiment, semi-major axis oval herein is 27mm, and semi-minor axis is 22mm, Eccentricity is 0.58.In many embodiment, its semi-major axis is between 20mm to 35mm, between semi-minor axis 16mm to 30mm, from Heart rate is between 0.5 to 0.7.Meanwhile, by measuring the oval center of circle 39 and front and back incisura 34, the angle α between 35 lines；Oval circle Angle β between the heart 39 and rear incisura 35 line and oval 38 major axis, can be carried out this section of articular cartilage face 36 shape length Accurate description.In a fact Example, angle α is 180 degree, and angle β is 35 degree.In another embodiment, angle α is 190 Degree, angle β is 40 degree.In many embodiment, angle α is between 170 degree to 195 degree, and angle β is between 20 degree to 45 degree. In most cases, condyle intermediate layer in condyle intermediate surface front there is no trochoid face inside femur, i.e. femur in femur The ellipse 38 in face does not corresponds to coaster First Point eccentric throw (offset) maximum aspect inside femur, and the two aspect is ellipse Circle is not consistent.Therefore, condyle ellipse 38 in this femur is projected inside femur coaster by us along MRI sagittal plain scanning direction Front some eccentric throw (offset) maximum aspect, such as Figure 1B.When aspect medial meniscus anterior angle 45 is stretched since then in femur The front incisura recess46 that condyle 42 articular cartilage face 36 is formed starts, and goes up forward so far trochoid cartilage surface inside aspect femur 37 terminate, and this section of trochoid cartilage surface 37 can represent with one section of arc of an ellipse 40.Though this section of joint of a part of experimenter Face shows as circle, but most of experimenter shows as ellipse.The major axis of trochoid cartilage surface ellipse 40 inside this femur It is perpendicular to the major axis of condyle intermediate surface ellipse 38 in femur.This ellipse 40 is with the circle on femoral bone pulley concave layer face (Fig. 2) Done on the basis of 70, so the center of circle 41 of this ellipse 40 and the center of circle 41 of the femoral bone pulley circle 70 of concave layer face (Fig. 2), vowed The projection of shape bit scan is completely superposed.In one embodiment, the semi-major axis of this ellipse 40 is 29mm, and semi-minor axis is 27mm, from Heart rate is 0.365.In many embodiment, the semi-major axis of this ellipse 40 between 20mm to 35mm, semi-minor axis 20mm to 30mm Between.On the whole, these oval 40 semi-major axis are little with the difference of semi-minor axis, such as 1mm, 2mm, or 3mm.Meanwhile, by measuring Angle γ between the center of circle 41 and front incisura 46 and coaster cartilage surface end point line, the center of circle 41 to coaster cartilage surface end point line And angle γ ' between these oval 40 semi-minor axis, can describe exactly to the arc 37 of this section of trochoid cartilage surface.? In multiple embodiments, angle γ is between 40 degree to 80 degree, and angle γ ' is between-5 degree are to 40 degree.

According to some embodiments, the position in the center of circle 41 of coaster ellipse 40 inside the center of circle 39 of condyle ellipse 38 and femur in femur Relation of putting determines the spatial relation of whole femur condyle and femoral bone pulley portion, decides the ginseng in footpath in the external diameter of femoral prosthesis Numerical value.Can intersect, with the major and minor axis of coaster ellipse 40 inside femur, the rectangle 50 surrounded with condyle in femur oval 38 and state it Relation between.In one embodiment, the length 107 of rectangle 50 is 13mm, and wide 109 is 9mm.In another embodiment, The length 107 of rectangle 50 is 12mm, and wide 109 is 7mm.In many embodiment, the length 107 of rectangle 50 is between 8mm to 16mm, wide 109 between 4mm to 12mm.The angle of oval 38,40 center of circle 39,41 lines of the two 38 major axis oval with condyle in femur is θ. In one embodiment, θ is 32 degree.In another embodiment, θ is 35 degree.In many embodiment, θ angular range is 25 Spend between 35 degree.

Femoral bone pulley concave layer face 62 is the aspect at Whiteside line place clinically, such as Fig. 2.This aspect 62 is to survey Determine the important foundation of trochoid face geometric shape inside and outside femur.Can most preferably coincide with this coaster aspect 62 articular cartilage face 64 , and simultaneously remain to most preferably coincide with the circle in this aspect 62 subchondral bone face 65 after scaled down, have and only one of which 70. Oval 40 centers of circle of coaster inside MRI sagittal plain scanning projection, with femur, the center of circle 41 of this circle 70 and lateral side of femur coaster circle Shape 80 center of circle is completely superposed, and the center of circle, former capital 41 represents.Blumensaat line 63 clinically is included by this circle 70.It is similar to Statement above, the trochoid cartilage surface 64 of this aspect 62 is one section of arc of this circle 70, and the radius of this circle 70 available Represent with angle.The center of circle 41 is ψ with the angle of trochoid cartilage surface 64 boundary's line front and back；Before the center of circle 41 and articular cartilage face 64 The line on boundary and trunnion axis angle are ε.In one embodiment, the radius of this circle 70 be 24mm, ψ be 100 degree, ε is 0 degree. In another embodiment, the radius of this circle 70 be 25mm, ψ be 105 degree, ε is 5 degree.In many embodiment, this circle 70 Radius size be 16mm to 30mm, ψ scope from 90 degree to 125 degree, ε scope from-20 degree to 10 degree.And the radius of this circle 70 with In femur, the semimajor axis length of condyle ellipse 38 is specific ratios relation, and such as 2/5,3/5 or 3/4.

According to embodiment of the disclosure, femoral lateral condyle geometry can represent with ellipse, belongs to a section of this ellipse Arc.In one embodiment, we choose the sagittal plain aspect at femoral lateral condyle rearmost point eccentric throw (offset) maximum place, That is femoral lateral condyle intermediate surface, this aspect sagittal plain is also simultaneously lateral side of femur coaster First Point eccentric throw (offset) It is worth greatly aspect, shown each relation such as Fig. 3.In femoral lateral condyle 82 articular cartilage face 76 shape when lateral meniscus anterior angle 73 is stretched The front incisura recess74 become starts, to the rear incisura formed at femoral lateral condyle 82 during lateral meniscus relief angle 83 high flexing position Recess75 terminates, and the articular cartilage face 76 of the femoral lateral condyle 82 of this section is completely superposed with an ellipse 78.The major axis of this ellipse 78 Relative to oval 38 major axis of condyle in femur, in the certain angle Ω that turns clockwise, it is 12 degree the most in one embodiment, another In embodiment being 18 degree, in many embodiment, Ω averagely rotates between 5 degree to 25 degree.Its center of circle 79 has projected in sagittal plain Full weight is together in the center of circle 39 of condyle ellipse 38 in femur；Corresponding to femoral lateral condyle lateral collateral ligament attachment point 122 on MRI axle position. In one embodiment, the semi-major axis of this ellipse 78 is 30mm, and semi-minor axis is 26mm；In another embodiment, this ellipse 78 Semi-major axis be 26mm, semi-minor axis is 23mm.In many embodiment, the semi-major axis of this ellipse 78 between 21mm to 33mm, Between semi-minor axis 16mm to 30mm, eccentricity is between 0.5 to 0.7.Meanwhile, by measure center 79 and incisura 74,75 front and back Angle ζ between included angle between line, the center of circle 79 and rear incisura 75 line and oval 78 major axis of ectocondyle, can be to this section of joint Face 76 arc describes exactly.In one embodiment, φ is 130 degree, and ζ is 40 degree.In many embodiment, included angle exists Between 120 degree to 160 degree, angle ζ is between 30 degree to 70 degree.

In this aspect, start to lateral side of femur trochoid cartilage surface 77 to terminate from front incisura recess74, this section 77 Available circular 80 represent.Although a part of experimenter shows as ellipse, but most of experimenter performance is still circular.This femur The center of circle 41 of lateral trochlear aspect 72 circle 80 in MRI sagittal plain with femur inside the center of circle of coaster ellipse 40, and femur The center of circle in coaster concave layer face 62 is completely superposed.The radius of this circle 80 between 25mm to 35mm, such as 28mm, or 26mm.The line of intersection point below circular 80 centers of circle 41 and circular 80 ellipses 78, the center of circle 41 of circular 80 is soft with lateral side of femur coaster Facies articularis ossium end point line, the angle between them is ρ；The center of circle 41 of circular 80 and lateral side of femur coaster cartilage surface end point Line and trunnion axis between angle be ρ '.Angle ρ between 80 degree to 120 degree, such as 90 degree, 100 degree or 110 degree；Folder Angle ρ ' is between-30 degree are to 20 degree, and such as-10 spend, 0 degree, or 10 degree.

According to embodiment of the disclosure, femur condyle is on MRI sagittal plain scanning direction: ectocondyle articular cartilage face in femur The most available oval expression, the most available oval and/or circular expression of trochoid cartilage surface, femur inside and outside femur Coaster recess (i.e. coaster ditch center) is circular expression, as shown in Figure 4 A and 4 B shown in FIG..

In femur, each aspect of condyle articular cartilage face sagittal plain is the set 92 that concentric is oval, the most each ellipse big Little difference, major and minor axis direction is consistent and overlaps, and each ellipse has the eccentricity of approximation, as shown in Figure 4 A.This represents femur The same sagittal direction of ectocondyle prosthese direction of travel.So the real direction of condyle articular cartilage face is for being parallel to Whiteside line in femur, It is perpendicular to wear condyle line TEA.The each aspect of femoral lateral condyle articular cartilage face sagittal plain is oval set 93, as shown in Figure 4 B.Its In the varying in size of each ellipse, major and minor axis direction is consistent and approximation overlaps, and the center of circle approximation of the most each ellipse overlaps in one heart Circle best-fit.This represents the femoral lateral condyle same sagittal direction of prosthese direction of travel.So the real direction of femoral lateral condyle articular cartilage face For being parallel to Whiteside line, it is perpendicular to wear condyle line (TEA).Inside femur, each aspect of trochoid cartilage surface sagittal plain is ellipse Circular set, and the major and minor axis direction of these ellipses is identical, the center of circle concentric arrays of each ellipse.But each ellipse is centrifugal Rate also differs.The size of these ellipses is Fibonacci sequence sequence.MRI sagittal plain scanning femur condyle, outside whole femurs The most rounded performance in sideslip deck face, though the radius size difference that each lateral trochlear is circular, its center of circle 41 projects and all overlaps.

On the coronalplane in the condyle ellipse center of circle 39 and the femoral lateral condyle ellipse center of circle 79 in femur, ectocondyle hat in its femur Shape position articular surface 95,97 can represent, such as Fig. 5 with circular and ellipse.In femur, the condyle ellipse center of circle 39 is as the center of circle, a circle 94 Can coincide with condyle Coronal articular surface 95 in femur well, its radius of circle is equal to the semi-minor axis of condyle ellipse 38 in femur.This section The radian of articular surface can represent by angle λ.Vertical line divides λ to be λ 1 and λ 2, and wherein λ 1 and λ 2 can be equal, it is also possible to unequal.? In one embodiment, λ angle is 65 degree；In another embodiment, λ angle is 70 degree.With the femoral lateral condyle ellipse center of circle 79 it is Center, an ellipse 96 turns clockwise δ 1 degree, and just and inner circular 94 is tangent and coincide with femoral lateral condyle Coronal articular surface 97.The eccentricity of this ellipse 96 is equal to 0.618, is perfect oval.The radian of this section of articular surface can represent with angle δ.Vertical line Dividing δ is δ 1 and δ 2, and wherein δ 1 and δ 2 is unequal.In one embodiment, δ angle is 70 degree；In another embodiment, δ angle Degree is 75 degree.

In femur according to disclosure embodiment, condyle UKA prosthese has sagittal plain ellipse geometric shape and Coronal is circular Geometric shape.According to above example it is known that in femur condyle be the set of concentration ellipse, and these elliptic planes are spatially put down Row is in the Whiteside line of coaster.The center of circle of these ellipses corresponding to condyle medial collateral ligament attachment point in femur at.So femur The geometric shape of interior condyle UKA prosthese is: be made up of concentration ellipse in sagittal plain, such as Fig. 6；It is made up of circle on Coronal, such as figure 7.In the femur of the disclosure, condyle UKA prosthese 201 is divided into articular surface part, i.e. during motion of knee joint with patella inside and shin The prosthese peripheral surface contacted inside bone platform；Stock is adjoined after condyle UKA prosthese 201 is inserted in inner lateral parts, i.e. femur Bone condyles osteotomy surface and the part of bone cement, show as at the inboard face postartis of straight in cross-section, and with articular surface segmental arc mutually The inboard face distal portion caused.

In sagittal plain, in femur, condyle UKA prosthese 201 is one section of arc 203 of an ellipse 38, such as Fig. 6.This section of arc 203 Front and back correspond to meniscus incisura recess, form an arc range, such as 150 degree to 200 degree, wherein this arc range It is 175 degree in one embodiment, another embodiment is 185 degree, and be 180 degree in another embodiment.It is concrete It is represented by connecting incisura recess207 before and after meniscus, 208 and angle by the straight line in the oval center of circle 39 with transverse β.This β angle is 30 degree in one embodiment, is 35 degree in another embodiment, and is 40 in another embodiment Degree.In femur at the postartis of face, condyle UKA prosthese inboard 202 be meniscus after incisura recess208 be perpendicular to transverse hang down Line, is also postartis osteotomy site place.This position changes with the change of prosthese parameter.In femur, condyle UKA prosthese 201 is remote End 203 constructs in ellipse arc.Its medial surface has two columns, corresponds to the center stand column 204 in the oval center of circle 39 respectively；With Rear box type column 205 corresponding to elliptic focus.At the end of the distal component 203 of this UKA prosthese, the also nail of a lock screw Hole 206, with corresponding one piece of lock screw 206 '.This position contacts and meniscus when normal human, does not close with tibial plateau Nodal section contacts；And also simultaneously not in contact with patella, so fix the contact having no effect on articular surface at this position row screw. And the direction of the fixing screw 206 ' of locking is different from center stand column and rear box type column, can strengthen the degree of stability of prosthese.Can manage Solving, those skilled in the art can be arranged as required to the column of greater number.

On Coronal, can be with one section of arc 95 of a circle 94 according to condyle Coronal articular surface profile in our known femur of Fig. 5 Represent, its radian is λ, such as this radian in the range of 50 degree to 90 degree, within condyle UKA prosthese 201 Coronal profile such as Shown in Fig. 7.And segmental arc 203 can be regarded 221 approximations circular with as and overlaps in sagittal plain, the radius of this circle 221 is more than UKA prosthese The radius of 201 Coronal circles 94.The curvature of this circle 221 and parameter as grinding tool parameter to prepare bone bed surface.

On visual angle, axle position, in femur, the articular surface of condyle UKA prosthese 201 is asymmetric shape, such as Fig. 8.Prosthese placement direction is It is parallel to Whiteside line and is perpendicular to wear condyle line TEA.In prosthese, outside is respectively arranged with a straight limit 243,245, is parallel to Whiteside line and be perpendicular to TEA.And inside arc limit 241 is in arc-shaped, to adapt to condyle far-end profile in femur；Arc limit, front The curvature of 242 is corresponding to the parameter of grinding tool circle 221；Bottom 244 is the curvature of Coronal circle 94.So, condyle UKA in femur The three-dimensional diagram of prosthese 201, such as Fig. 9.Except above-mentioned each described position, the inboard mask of prosthese has respective recesses flute mark with suitable Answer bone cement.

With previously described femur condyle MRI scan direction, preoperative MRI image can be planned out optimal prosthese big Little and position.Concrete operation technique: first have to determine the Whiteside line of coaster ditch after appearing, with electric knife at interior condyle face subscript Note is parallel to the prosthese line of direction of Whiteside line.With one oval with condyle in femur adapt most oval measure grinding tool 251 Fit in articular surface well, such as Figure 10 A.Measure grinding tool 251 front end and have grapple 254 structure, in holding on well Rear condyles.There are two nail 255 at the end measuring grinding tool 251, are fixed to reach bigger stability with short nail.Necessary Ensure that the hollow handrail 257 measuring grinding tool just correspond to medial collateral ligament attachment point direction, the direction in the i.e. oval center of circle 39.In this Empty handrail 257 can put into drill bit, road 258 of holing on condyle in femur, is beneficial to next step and puts into abrasive drilling center pole.Surveying There is an osteotomy groove 256 lower end of amount grinding tool 251, and it just correspond to condyle rear osteotomy line 202 in femur.Then measurement grinding tool is taken off 251, central duct 258 is placed spud pile 259, by hollow drill bit 271, its radius is equal to aforementioned circular 221.Mill The degree of depth of file is limited by spud pile 259, and period continuous Template compare the degree of depth.

Femoral lateral condyle UKA prosthese according to disclosure embodiment has sagittal plain and Coronal is all oval geometric form State.According to above example it is known that femoral lateral condyle is the set of concentration ellipse, and these elliptic planes are spatially parallel to sliding The Whiteside line of car.The center of circle of these ellipses is corresponding at femoral lateral condyle lateral collateral ligament attachment point.So femoral lateral condyle The geometric shape of UKA prosthese is: be made up of concentration ellipse in sagittal plain；It is made up of ellipse on Coronal, such as Fig. 6.The disclosure Femur in condyle UKA prosthese 201 be divided into articular surface part, i.e. during motion of knee joint with patella inside and tibial plateau in The prosthese peripheral surface that side contacts；Adjacent femur condyle cuts with after in inner lateral parts, i.e. femur, condyle UKA prosthese 201 is inserted Surface of bone and the part of bone cement, show as at the inboard face postartis of straight in cross-section, and the inboard face consistent with articular surface segmental arc Distal portion.

In sagittal plain, femoral lateral condyle UKA prosthese 301 is one section of arc of an ellipse 78, such as Figure 11.Point before and after this section of arc Correspond to meniscus incisura recess307,308, they form angular ranges, such as this radian in the range of 120 degree extremely 160 degree, in one embodiment, this angle is 145 degree, is 150 degree in another embodiment.It is specifically represented by half Incisura recess307 before and after month plate, 308 angle [alpha] surrounded with the ellipse center of circle 79.Wherein after the meniscus of the center of circle 79, incisura 308 connects Line and the angled β of trunnion axis, this β angle is 35 degree in one embodiment, is 40 degree, in multiple enforcements in another embodiment Average out to 35 degree in example.The inboard postartis osteotomy direction, face 302 of femoral lateral condyle UKA prosthese 301 is perpendicular to trunnion axis.This position is with ellipse Circle Parameters changes and changes.The far-end 303 of femoral lateral condyle UKA prosthese 301 constructs in ellipse arc.Its medial surface has one to stand Post, i.e. corresponding to the rear box type column 305 of elliptic focus.At the end of the distal component 303 of this UKA prosthese, an also locking spiral shell Nail nail 306, with corresponding one piece of lock screw 306 '.This position contacts and meniscus when normal human, does not put down with tibia Platform articular surface contacts；This screw hole location is partially outer simultaneously is not contacted with patella, so at the fixing not shadow of this position row screw Ring the contact of articular surface.And the direction of the fixing screw 306 ' of locking is different from rear box type column, can strengthen the degree of stability of prosthese.

On Coronal, meet one according to our the known femoral lateral condyle Coronal articular surface profile by the center of circle 79 of Fig. 5 oval One section of arc 97 of shape 96 represents, its radian is δ, and such as this radian is in the range of 50 degree to 90 degree, so ectocondyle UKA prosthese 301 Coronal profile as shown in figure 12, its corresponding tibial side prosthetic joint face Coronal is shaped as adapting to the spill of this ellipse 325.This section of arc 97 can coincide with a circle 321 without the center of circle 79 approx, and its home position is 322, its circle half Footpath can regard the semi-minor axis length as oval 96 as.Axis of orientation 323 is not only the direction of rear column 305, bores for burr and solid yet Determining the direction of stake, its angle with vertical axis is 15 degree, the curvature of this circle 321 and parameter as grinding tool parameter to prepare bone bed Face.On Coronal, locking nail and lock screw 306 direction and angled 15 degree of vertical axis.So lock screw 306 and rear Angled 30 degree of column 305, to reach the maximum stability of prosthese.

On visual angle, axle position, the articular surface of femoral lateral condyle UKA prosthese 301 is asymmetric shape, such as Fig. 8.Prosthese placement direction is It is parallel to Whiteside line and is perpendicular to wear condyle line TEA.In prosthese, ectocondyle is respectively arranged with a straight limit 343,345, is parallel to Whiteside line and be perpendicular to TEA.And lateral arcs limit 341 is in arc-shaped, to adapt to femoral lateral condyle far-end profile；Arc limit, front The curvature of 342 is corresponding to the curvature parameters of circle 321；Bottom 344 is the curvature of Coronal ellipse 96.So, condyle in femur The three-dimensional diagram of UKA prosthese 201, such as Figure 13.Except above-mentioned each described position, the inboard mask of prosthese has respective recesses groove To adapt to bone cement.

The operating procedure that femoral lateral condyle UKA prosthese is laid lays step with interior condyle UKA prosthese, has the most special profile Grinding tool, repeats no more.

According to the femoral bone pulley UKA prosthese that embodiment of the disclosure, there is coaster inside sagittal plain oval or circular and outer The geometric shape that sideslip car is circular or oval, and it is applicable to the design of non-Patellar arthoplasty and Patellar arthoplasty.Such as, femur is sliding Car prosthese 401 includes: articular surface, and described articular surface is the surface contacted with facies articularis patellae during motion of knee joint, it Sagittal plain shows as the segmental arc 37 on ellipse or circular 40 and section arc 77 spatial aggregation on ellipse or circular 80；And Inboard face, described inboard face is adjacent femoral bone pulley portion osteotomy surface and the part of bone cement after described prosthese is inserted, show as with The inboard face 409 that femoral bone pulley articular surface form is consistent.According to above-described embodiment, inside and outside femur coaster respectively by oval and One section of circular arc is constituted with concentric arrangement, as shown in Figure 4 A and 4 B shown in FIG..So the femoral bone pulley UKA prosthese 401 of the disclosure sets It is calculated as ellipse and the lateral trochlear circular geometry morphosis of coaster inside femur, with concentric arrangement.Concentric shafts 41 ' is spatially It is parallel to TEA, and is perpendicular to Whiteside line.As shown in Figure 14 A, concentration ellipse and the circle of interior lateral trochlear part it are shown as Shape is constituted, and the coaster recess that center circle 70 is through Whiteside line is circular.The center of femoral bone pulley UKA prosthese 401 Having a column 402, surrounding has four screw hole 403,404,405,406 to lay lock screw, as shown in Figure 14B.

In the above embodiments, femoral lateral condyle UKA prosthetic designs is formed based on femoral lateral condyle oval structure, femoral lateral condyle Ellipse is designed according to the outer postartis articular cartilage face shape of normal human's knee joint femoral.The ellipse of femoral lateral condyle is slightly smaller In femur, condyle is oval.Its long axis direction is oval in the certain angle that turns clockwise with reference to condyle in femur.Meanwhile, inside and outside femur The center of circle of condyle ellipse shows in overlapping in femoral prosthesis sagittal plain.Femoral lateral condyle ellipse can be reduced to major and minor axis by replacement scheme Direction is consistent with condyle ellipse in femur, and cancels the step for of turning clockwise, and this can more simplify femoral prosthesis design The process made.Though the postartis articular cartilage face shape outer with normal human's shoulder joint femur of the profile after Gai Bianing is not consistent, but Also without can not.It is aided with the tibial plateau side prosthesis pad matched, it is also possible to get good articular kinesiology effect.

Additionally, in coaster UKA prosthetic designs, be described as lateral trochlear in femur being made up of oval or circle.This Individual scheme is that final statistical analysis draws.Although in major part embodiment femur, condyle shows as ellipse, but also has small part In embodiment femur, condyle shows as circle；Although major part embodiment femoral lateral condyle shows as circle, but also has small part to implement Example femoral lateral condyle shows as ellipse.And our specific embodiments is built upon analyzing Chinese's Normal Knee structure base On plinth, however not excluded that race is different and the difference that produces.If condyle in femur is described as circle, femoral lateral condyle is described as ellipse Shape；Or ectocondyle in femur all it is described as circle or is all described as ellipse, being aided with the Patellar arthoplasty prosthese matched, Good articular kinesiology effect can also be obtained.

It should be noted that the prosthese that the disclosure proposes, when non-production in enormous quantities in enormous quantities, the individuation such as customization is three-dimensional (3D) print in knee-joint prosthesis, also will be protected by this patent.

So, the ellipse, the circular former prosthese that propose in disclosure embodiment more meet normal human's knee joint morphology Structure.This principle oval, circular is reduced to knee joint structure complicated, that can not understand simply, can effectively repeat Ellipse, circular space constitutes.

Additionally, disclosure embodiment propose ellipse, circular principle and the femoral prosthesis that makes, the parameter of its each assembly Can embody with oval, circular, important angle parameter, and along with the change of each parameter, change occur accordingly, thus Realize the accurate making of different model prosthese.Further, each single UKA prosthese can be used alone or combines and assembles application.Can Realize the correction of the joint line of force.

Although exemplary embodiment describing the disclosure with reference to several, it is to be understood that, term used is explanation and shows Example and nonrestrictive term.Owing to the disclosure can be embodied as in a variety of forms without deviating from disclosed spirit or reality Matter, it should therefore be appreciated that above-described embodiment is not limited to any aforesaid details, and the spirit that should be limited in appended claims Explain widely with in scope, therefore fall into the whole changes in claim or its equivalent scope and remodeling all should be the power of enclosing Profit requires to be contained.

Claims (16)

1. femur side medial unicondylar prosthese (201), it is characterised in that including:

Articular surface, described articular surface be during motion of knee joint with inside patella and the surface that contacts of medial side of tibial plateau, It shows as the segmental arc (203) on first oval (38) in sagittal plain, shows as on first circular (94) on Coronal Segmental arc (95)；And

Inboard face, described medial surface is adjacent femur condyle osteotomy surface and the part of bone cement after described prosthese is inserted, and shows as Inboard face distal portion (209) at the inboard face postartis of straight in cross-section (202) and consistent with articular surface segmental arc (203).

2. femur side medial unicondylar prosthese (201) as claimed in claim 1, it is characterised in that also include:

First column (204), is arranged on described inboard face, corresponding to the center of circle (39) of described first oval (38)

Second column (205), is arranged on described inboard face, corresponding to the focus of described first oval (38).

3. femur side medial unicondylar prosthese (201) as claimed in claim 2, it is characterised in that described femur side medial unicondylar The end of the front side of prosthese (201) is formed with screw hole (206), and described screw hole is formed as the locking being inserted The direction of screw (206 ') is different from the direction of the first column (204) and the second column (205).

4. femur side medial unicondylar prosthese (201) as claimed in claim 1, it is characterised in that the major axis of first oval (38) It is perpendicular to femur mechanical axis, and its center of circle (39) are corresponding to condyle medial collateral ligament attachment point (123) in femur.

5. femur side medial unicondylar prosthese (201) as claimed in claim 1, it is characterised in that show as each in sagittal plain Corresponding first oval (38) in individual aspect are at three dimensions upper set, and they constitute complete femur medial unicondylar prosthese shape Shape, their center of circle overlaps in sagittal plain, and major and minor axis direction is consistent, the line coincident in whole centers of circle in wear condyle line TEA and It is perpendicular to Whiteside line.

6. femur side medial unicondylar prosthese (201) as claimed in claim 1, it is characterised in that on visual angle, axle position, described vacation Body (201) placement direction is for being parallel to Whiteside line and being perpendicular to wear condyle line TEA, and prosthese (201) outside has one straight Limit (243), be parallel to Whiteside line and be perpendicular to wear condyle line TEA, and inside arc limit (241) are in arc-shaped, to adapt to Condyle far-end profile in femur, the curvature on arc limit, front (242) is corresponding to the parameter of grinding tool circular (221), and bottom (244) are crown The curvature of position first circular (94).

7. femur side medial unicondylar prosthese (201) as claimed in claim 1, it is characterised in that on described first oval (38) The angular range of segmental arc (203) be 150 degree to 200 degree, the angular range of the segmental arc (95) on described first circular (94) is 50 degree to 90 degree.

8. single condyle prosthese (301) outside a femur side, it is characterised in that including:

Articular surface, described articular surface is the surface contacted with outside patella and outside tibial plateau during motion of knee joint, It shows as the segmental arc (303) on second oval (78) in sagittal plain, shows as on the 3rd oval (96) on Coronal Segmental arc (97)；And

Inboard face, described inboard face is adjacent femur condyle osteotomy surface and the part of bone cement after described prosthese is inserted, and shows as Inboard face distal portion (309) at the inboard face postartis of straight in cross-section (302) and consistent with articular surface segmental arc (303).

9. single condyle prosthese (301) outside femur side as claimed in claim 8, it is characterised in that also include:

3rd column (305), is arranged on described inboard face, corresponding to the focus of described second oval (78).

10. single condyle prosthese (301) outside femur side as claimed in claim 9, it is characterised in that single condyle outside described femur side The end in the distally of prosthese (301) is formed with screw hole (306), and described screw hole is formed as the locking being inserted The direction of screw (306 ') is different from the direction of the 3rd column (305).

Single condyle prosthese (301) outside 11. femur sides as claimed in claim 8, it is characterised in that show as each in sagittal plain Corresponding second oval (78) in individual aspect are at three dimensions upper set, and they constitute complete lateral side of femur list condyle prosthese shape Shape, their center of circle sagittal plain overlaps, and major and minor axis direction is consistent, and the line coincident in whole centers of circle is in wearing condyle line TEA and hanging down Straight in Whiteside line.

Single condyle prosthese (301) outside 12. femur sides as claimed in claim 8, it is characterised in that in visual angle, axle position, described vacation Body (301) placement direction is for being parallel to Whiteside line and being perpendicular to wear condyle line TEA, and prosthese (301) inner side has one straight Limit (343), be parallel to Whiteside line and be perpendicular to wear condyle line TEA, and lateral arcs limit (341) are in arc-shaped, to adapt to Femoral lateral condyle far-end profile, the curvature on arc limit, front (342) is corresponding to the curvature parameters of circular (321), and bottom (344) are crown The curvature of the segmental arc (97) of position the 3rd oval (96).

Single condyle prosthese (301) outside 13. femur sides as claimed in claim 8, it is characterised in that on described second oval (78) The angular range of segmental arc (303) be 120 degree to 160 degree, the angular range of the segmental arc (97) on the described 3rd oval (96) is 50 degree to 90 degree.

14. 1 kinds of femoral bone pulley prostheses (401), it is characterised in that including:

Articular surface, described articular surface is the surface contacted with facies articularis patellae during motion of knee joint, and it is in sagittal plain Show as the segmental arc (37) on the 4th ellipse or circular (40) and section arc (77) spatial aggregation on the 5th ellipse or circular (80)； And

Inboard face, described inboard face is adjacent femoral bone pulley portion osteotomy surface and the part of bone cement, performance after described prosthese is inserted For the inboard face (409) consistent with femoral bone pulley articular surface form.

15. femoral bone pulley prostheses (401) as claimed in claim 14, it is characterised in that described 4th oval or circular and the Five ellipses or circle are with concentric arrangement, and concentric shafts (41 ') is spaced parallel in wearing condyle line TEA, and is perpendicular to Whiteside line.

16. femoral bone pulley prostheses (401) as claimed in claim 14, it is characterised in that described femoral bone pulley prosthese (401) There is a column (402) center, and surrounding has four screw hole (403,404,405,406) to lay lock screw.