WO1992022265A1 - Prothese de hanche - Google Patents
Prothese de hanche Download PDFInfo
- Publication number
- WO1992022265A1 WO1992022265A1 PCT/AU1992/000274 AU9200274W WO9222265A1 WO 1992022265 A1 WO1992022265 A1 WO 1992022265A1 AU 9200274 W AU9200274 W AU 9200274W WO 9222265 A1 WO9222265 A1 WO 9222265A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- outer shell
- shell
- prosthesis
- acetabular component
- radius
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
- A61F2002/30406—Threads machined on spherical, e.g. hemispherical, surfaces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
- A61F2002/3042—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves with a pin cooperating with a helical groove
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30426—Bayonet coupling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30594—Special structural features of bone or joint prostheses not otherwise provided for slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2002/30968—Sintering
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
- A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
- A61F2002/3403—Polar aperture
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
- A61F2002/3429—Acetabular cups with an integral peripheral collar or flange, e.g. oriented away from the shell centre line
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
- A61F2002/3445—Acetabular cups having a number of shells different from two
- A61F2002/3448—Multiple cups made of three or more concentric shells fitted or nested into one another
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
Definitions
- the present invention relates to an acetabular component prosthesis for use in a total hip arthroplasty.
- Hip replacement operations have become more common in recent years and are now being used not only for the aged but also for relatively young patients who may require hip replacement following trauma or premature degeneration of the hip. This has highlighted the need for improved fixation of the acetabular component in the pelvic bone.
- the acetabular component may either be cemented in place using a cement such as polymethylmethacrylate or it may be a cementless component held in place by physical engagement of the component with the bone followed, hopefully, by osseointegration, i.e. bone ingrowth into the surface of the component. Where the bone is sound the use of a cementless acetabular component is preferred. It has been found however that an unacceptable degree of late aseptic loosening occurs with both cemented and cementless acetabular components.
- the human acetabulum is not hemispherical in shape. At rest, it is an eliptical structure.
- the pelvic acetabular bone is viscoelastic and flexible, and under load the acetabulum can deform. The deformation with load causes the acetabulum to change from the eliptical shape to a more hemispherical shape. When the load is removed the acetabulum becomes eliptical again. There is, with activity, a cyclic shape change occurring. If this pattern of cyclic change was not the case then there would be no need for a transverse ligament.
- the acetabular articular surface would be a complete osseo-cartilagenous ring to accommodate the femoral head.
- the acetabular articular surface is actually a horseshoe shaped structure.
- the osseo-cartilagenous articular rim is deficient at the site of the acetabular fossa. It is at this site that one finds the transverse acetabular ligament.
- the fibres of this ligament decussate like a St. Andrew's cross. This decussation permits the transverse ligament to accommodate the cyclic change in shape of the acetabulum.
- the geometric change has been identified as being up to and even more than 100 microns.
- the cyclic change of the pelvic acetabular geometry implies then that under load there is an environment of compression at the implant bone interface and when load is removed there is an environment of tension. Any motion at the interface will also be associated with shear forces.
- the hemispherical implant-bone interface is then exposed to a complex combination of forces, i.e. compression, tension and shear.
- the zonal distribution of these forces is unpredictable and will be influenced by a variety of factors, e.g. the nature of the materials of fabrication, the bone quality, the dynamics of load, frictional torque, etc.
- the orientation of the implant is no less important.
- the zonal distribution of forces is greatly influenced by the abduction angle of the implanted cup.
- the hemispherical acetabular component can be described as an implant whose shape presents, and is exposed to, a most unstable biomechanical environment. This environment is one which can preclude the achievement of osseointegration and thereby deny a stable and durable fixation of the acetabular prosthesis.
- Biological fixation is fundamentally no different from mechanical fixation. Both are enhanced by compression and compromised by tension and shear. Biological environments characterised by tension and shear are characterised by fibrous tissue ingrowth. Osseointegration is absent or at best poor in such circumstances.
- the acetabular component prosthesis of the present invention is designed to provide an alternative to known acetabular components.
- the acetabular component according to the present invention will be more resistant to micromotion between the bone and the prosthesis, and hence late aseptic loosening, than the known acetabular components. Disclosure of the Invention
- the present invention consists in an acetabular component prosthesis comprising an outer shell of substantially hemispherical shape, the radius of which may be increased at least in its peripheral region, an inner non-compressible shell of substantially hemispherical shape and having an outer radius slightly greater than the initial inner radius of the outer shell and means to enable the inner shell to be held firmly nested within the outer shell and to thereby expand at least the peripheral region of the outer shell.
- the present invention is founded upon the inventor's realisation that for long term durable fixation and for osseointegration to be achieved there must be 1. excellent implant-bone apposition, 2. stable initial implant fixation,
- the effect of preloading or pretensioning is to place an interface (e.g. acetabular component - bone) into compression for better resistance to external tension forces and to create a friction force at the interface to resist shear forces. This is akin to a 'wedge expansion effect' . The effect will be to neutralise harmful cyclic secondary compression and tension forces, and to eliminate micromotion.
- the acetabular component according to this invention applies the basic engineering concept of preloading or pretensioning in its design, and by virtue of the unique configuration of the device. This preloading or pretensioning of the bone is retained in use by the continued outward pressure of the outer shell against the surrounding bone.
- the present acetabular component prosthesis is able to generate a pretension force at the bone-implant interface on insertion which will generate hoop stresses in tension in the bone to cause the interface to be under compression and in a state of preload.
- This effect will be maximal and uniform at the periphery and may be achieved, if desired., without any additional fixation (e.g. PMMA cement, screws, threads, spikes or pegs) .
- the outer shell is preferably formed of a thin metal hemisphere with a plurality of equiangularly spaced slots extending from the peripheral region of the shell towards its polar region. This allows the peripheral region of the outer shell to be readily expanded upon nesting of the inner shell therein.
- the degree of expansion, as measured by increase in radius is preferably of the order of from 0.05mm to 1.5mm.
- the height of the outer shell is slightly less than its initial radius of curvature.
- the outer shell may be provided with one or more holes to permit visualization of the prosthesis bone interface. These perforations, like the slots, function as macroporous venues for bone ingrowth.
- the outer surface of the outer shell may be coated with a bioactive material such as hydroxyapatite, may be sintered, have a microporous surface, or may be smooth. If desired the outer shell may also serve as a Protrusio Ring device, or bone graft retention device.
- the inner shell is preferably a thick metal hemisphere which is resistant to compression such that upon nesting of the inner shell with the outer shell it will be the outer shell which expands and not the inner one which is compressed.
- the inner shell preferably contains a liner of ultra high molecular weight polyethylene or a similar polymeric or ceramic material with which the head of the femoral stem prosthesis articulates. If desired the liner and/or the inner shell may be provided with means to permit fixation of the liner in the inner shell.
- the inner shell is preferably of a height slightly less than its radius and the height is preferably so selected that when the inner and outer shells are nested their peripheral edges will in a substantially common plane.
- the inner and outer shells are preferably formed of titanium, a titanium alloy, or an alloy of cobalt, molybdenum and chromium. While the acetabular component according to this invention is designed for use without bone cement it is possible to use cement fixation if surgical needs require this form of bond.
- the means to hold the shell in nesting relationship may be formed on the inner shell, the outer shell or both and may comprise mating screw threads or wedges, or any similar means.
- the means comprise a plurality of radially extending pins, threads or bosses around the periphery of the inner shell which engage with corresponding ones of a like plurality of slots formed in the outer shell.
- the slots in the outer shell open into its peripheral edge and are inclined to the peripheral edge.
- a reamer or a series of reamers, is used to form a suitably sized cavity to receive the outer shell.
- the outer shell is inserted into it and the inner shell then introduced into the outer shell with its pins aligned with the slots in the outer shell.
- the inner shell is then rotated relative to the outer shell.
- Fig. 1 is a diametric sectional view through an acetabular component prosthesis according to this invention in place in a bone cavity.
- Fig. 2 is an expanded perspective view of the acetabular component prosthesis of Fig. 1,
- Fig. 3 is a side elevational view of the outer shell of the acetabular component prosthesis of Fig. 1, and
- Fig. 4 is a side elevational view of the inner shell of the acetabular component prosthesis of Fig. 1. Best Mode for Carrying out the Invention
- the acetabular component prosthesis 10 comprises an outer shell 11, and inner shell 12 and a liner 13. As seen in Fig. 1 the prosthesis 10 is positioned within a substantially hemispherical cavity in the pelvic bone 14.
- the outer shell 11 is substantially hemispherical, is formed of titanium and has a thickness of 1mm.
- the outer shell 11 is sintered on its outer surface to assist osseointegration and is formed with an aperture 18 in its polar location.
- slots 15 are arranged equiangularly around the outer shell 11. These slots 15 extend inwardly from the periphery of the outer shell part way towards its polar location.
- slots 16 are equiangularly spaced around the inner shell and open into the periphery thereof.
- the slots 16 are inclined to the peripheral edge by an angle of approximately 20 .
- the outer shell 11 has an outer radius of 28mm and an inner radius of 27mm.
- the height of the outer shell 11 is 26mm on the outer surface and 25mm on the inner surface.
- the slots 16 have a width of 2mm and terminate 3.16mm above the peripheral edge of the outer shell.
- the inner shell 12 is also hemispherical and formed of titanium. It is thick walled so as to be substantially incompressible. It is formed around its periphery with four equiangularly spaced pins 17 which are adapted to engage with the slots 16 in the outer shell. As is seen in Fig. 4 the inner shell 12 has a radius of 27.5mm and a height of 25mm. The pins 17 have a radius of 1mm and are centered 2.66mm from the periphery of the inner shell 12.
- the liner 13 is formed of ultra high molecular weight polyethylene and is adapted to fit within the inner shell 12 and to receive the head of a femoral prosthesis (not shown) .
- a cavity of 56mm diameter is reamed in the pelvic bone 14 using a conventional reamer and the outer shell 11 is placed therein.
- the inner shell 12 is then placed in the outer shell and rotated slightly to introduce the pins 17 into the slots 16.
- the angular position of the prosthesis 10 in the bone 14 may be adjusted slightly at this point.
- the inner shell 12 is then rotated relative to the outer shell 11. This may be done using a hand tool adapted to engage with the inner shell 12 if desired.
- the relative rotation between the inner and outer shells 11 and 12 causes the pins 17 to ride down the slots 16 causing the inner shell 12 to be drawn into and nest firmly in the outer shell 11.
- the peripheral regions of the outer shell 11 between the slots 15 are thus caused to flex radially outwardly pressing firmly against the bone 14 and placing it under a compressive force.
- This compressive force immobilises the prosthesis 10 in the bone 14 and prevents movement therebetween. This in turn facilitates bone growth and osseointegration between the bone 14 and the prosthesis 10.
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
On décrit un élément acétabulaire (10) destinée à une prothèse de hanche. L'élément comprend une coquille extérieure (11) de forme sensiblement hémisphérique, dont le rayon peut être augmenté au moins dans sa région périphérique, et une coquille intérieure incompressible (12) de forme sensiblement hémisphérique dont le rayon extérieur est légèrement plus grand que le rayon intérieur intial de la coquille extérieure (11). Des moyens, par exemple des fentes (16) ménagées dans la coquille extérieure (11) et des ergots (7) débouchant radialement de la coquille intérieure (12) maintiennent cette dernière fermement dans la coquille extérieure (11) et permettent la dilatation d'au moins la région périphérique de la coquille extérieure (11). Pendant son utilisation, la coquille extérieure (11), sous l'effet de son expansion, est mise fermement en contact avec la matière osseuse (14) qui entoure une cavité appropriée alésée dans le bassin.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPK6627 | 1991-06-11 | ||
AUPK662791 | 1991-06-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992022265A1 true WO1992022265A1 (fr) | 1992-12-23 |
Family
ID=3775462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1992/000274 WO1992022265A1 (fr) | 1991-06-11 | 1992-06-10 | Prothese de hanche |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO1992022265A1 (fr) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0617932A1 (fr) * | 1993-03-30 | 1994-10-05 | Etablissements TORNIER | Prothèse cotyloidienne élastiquement déformable |
FR2719465A1 (fr) * | 1994-05-04 | 1995-11-10 | Medinov Sa | Implant cotyloïdien perfectionné. |
EP0688546A1 (fr) * | 1994-06-15 | 1995-12-27 | SULZER Medizinaltechnik AG | Coque acétabulaire artificielle |
DE19616058A1 (de) * | 1996-04-23 | 1997-10-30 | Cerasiv Gmbh | Prothetische Gelenkpfannen-Schale |
FR2788685A1 (fr) * | 1999-01-22 | 2000-07-28 | Jean Louis Dore | Implant cothyloidien |
EP1284596A2 (fr) * | 2000-05-17 | 2003-02-26 | Brent Davis | Dispositif et procede pour la fabrication in situ d'extraits de plantes vivantes non coupees |
FR2854058A1 (fr) * | 2003-04-23 | 2004-10-29 | Medacta Int Sa | Systeme d'ancrage pour cavite acetabulaire |
EP1522282A3 (fr) * | 2003-08-27 | 2005-10-19 | Zimmer Technology, Inc. | Prothèse de hanche avec un assemblage modulaire de coque acétabulaire |
US8936602B2 (en) | 2000-03-17 | 2015-01-20 | Kinamed, Inc. | Marking template for installing a custom replacement device for resurfacing a femur and associated installation method |
US9168153B2 (en) | 2011-06-16 | 2015-10-27 | Smith & Nephew, Inc. | Surgical alignment using references |
US9445904B2 (en) | 2009-07-14 | 2016-09-20 | Biomet Manufacturing, Llc | Multiple bearing acetabular prosthesis |
US9445903B2 (en) | 2008-11-24 | 2016-09-20 | Biomet Manufacturing, Llc | Multi-bearing acetabular prosthesis |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3726213A1 (de) * | 1987-08-04 | 1989-02-16 | Mecron Med Prod Gmbh | Hueftgelenksprothese |
US4892549A (en) * | 1989-01-31 | 1990-01-09 | Osteonics Corp. | Dual-radius acetabular cup component |
EP0353171A1 (fr) * | 1988-07-28 | 1990-01-31 | Jean-Philippe Fayard | Cupule de prothèse |
DE3840468A1 (de) * | 1988-12-01 | 1990-06-07 | Lieke Michael | Endoprothesenkomponenten fuer eine hueftgelenkspfanne |
-
1992
- 1992-06-10 WO PCT/AU1992/000274 patent/WO1992022265A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3726213A1 (de) * | 1987-08-04 | 1989-02-16 | Mecron Med Prod Gmbh | Hueftgelenksprothese |
EP0353171A1 (fr) * | 1988-07-28 | 1990-01-31 | Jean-Philippe Fayard | Cupule de prothèse |
DE3840468A1 (de) * | 1988-12-01 | 1990-06-07 | Lieke Michael | Endoprothesenkomponenten fuer eine hueftgelenkspfanne |
US4892549A (en) * | 1989-01-31 | 1990-01-09 | Osteonics Corp. | Dual-radius acetabular cup component |
US4892549B1 (en) * | 1989-01-31 | 1999-10-05 | Stryker Corp | Dual-radius acetubular cup component |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0617932A1 (fr) * | 1993-03-30 | 1994-10-05 | Etablissements TORNIER | Prothèse cotyloidienne élastiquement déformable |
FR2703240A1 (fr) * | 1993-03-30 | 1994-10-07 | Tornier Sa | Prothèse cotyloïdienne élastiquement déformable. |
FR2719465A1 (fr) * | 1994-05-04 | 1995-11-10 | Medinov Sa | Implant cotyloïdien perfectionné. |
EP0688546A1 (fr) * | 1994-06-15 | 1995-12-27 | SULZER Medizinaltechnik AG | Coque acétabulaire artificielle |
US5624464A (en) * | 1994-06-15 | 1997-04-29 | Sulzer Medizinaltechnik Ag | Artificial acetabulum |
DE19616058B4 (de) * | 1996-04-23 | 2006-04-06 | Cerasiv Gmbh Innovatives Keramik-Engineering | Prothetische Gelenkpfanne |
DE19616058A1 (de) * | 1996-04-23 | 1997-10-30 | Cerasiv Gmbh | Prothetische Gelenkpfannen-Schale |
FR2788685A1 (fr) * | 1999-01-22 | 2000-07-28 | Jean Louis Dore | Implant cothyloidien |
US9393032B2 (en) | 2000-03-17 | 2016-07-19 | Kinamed, Inc. | Marking template for installing a custom replacement device for resurfacing a femur and associated installation method |
US8961529B2 (en) | 2000-03-17 | 2015-02-24 | Kinamed, Inc. | Marking template for installing a custom replacement device for resurfacing a femur and associated installation method |
US8936601B2 (en) | 2000-03-17 | 2015-01-20 | Kinamed, Inc. | Marking template for installing a custom replacement device for resurfacing a femur and associated installation method |
US8936602B2 (en) | 2000-03-17 | 2015-01-20 | Kinamed, Inc. | Marking template for installing a custom replacement device for resurfacing a femur and associated installation method |
EP1284596B1 (fr) * | 2000-05-17 | 2007-07-11 | Brent Davis | Dispositif et procede pour la fabrication in situ d'extraits de plantes vivantes non coupees |
EP1284596A2 (fr) * | 2000-05-17 | 2003-02-26 | Brent Davis | Dispositif et procede pour la fabrication in situ d'extraits de plantes vivantes non coupees |
FR2854058A1 (fr) * | 2003-04-23 | 2004-10-29 | Medacta Int Sa | Systeme d'ancrage pour cavite acetabulaire |
US7044974B2 (en) | 2003-08-27 | 2006-05-16 | Zimmer Technology, Inc. | Hip prosthesis with a modular acetabular cup assembly |
EP1522282A3 (fr) * | 2003-08-27 | 2005-10-19 | Zimmer Technology, Inc. | Prothèse de hanche avec un assemblage modulaire de coque acétabulaire |
US9445903B2 (en) | 2008-11-24 | 2016-09-20 | Biomet Manufacturing, Llc | Multi-bearing acetabular prosthesis |
US9445904B2 (en) | 2009-07-14 | 2016-09-20 | Biomet Manufacturing, Llc | Multiple bearing acetabular prosthesis |
US9168153B2 (en) | 2011-06-16 | 2015-10-27 | Smith & Nephew, Inc. | Surgical alignment using references |
US11103363B2 (en) | 2011-06-16 | 2021-08-31 | Smith & Nephew, Inc. | Surgical alignment using references |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1729689B1 (fr) | Implant a double coque pour l'ancrage sans ciment de protheses articulaires | |
US5004476A (en) | Porous coated total hip replacement system | |
US7780739B2 (en) | Method and apparatus for use of a metal-metal constrained liner | |
JP4057068B2 (ja) | 寛骨臼カップ用ロック機構 | |
JP5769320B2 (ja) | 連動式逆股関節および再置換プロテーゼ | |
JP6141113B2 (ja) | 拘束された可動ベアリング股関節アセンブリ | |
US5425778A (en) | Acetabular socket supporting ring | |
US8021432B2 (en) | Apparatus for use of porous implants | |
US9393122B2 (en) | Mobile bearing hip assembly and method of performing an orthopaedic surgical procedure | |
CA2588523C (fr) | Reusinage de tete femorale | |
EP2421474B1 (fr) | Coupe acétabulaire | |
US20140303743A1 (en) | Inner acetabular liner for a dual mobility femoral head construct | |
US20020147499A1 (en) | Locking systems for implants | |
US20030171818A1 (en) | Modular acetabular anti-protrusio cage and porous ingrowth cup combination | |
US20070100461A1 (en) | Knee prosthesis | |
WO2005117761A2 (fr) | Cotyle canin | |
WO2002009615A2 (fr) | Elements cotyloidiens ameliores reduisant les risques de dislocation | |
WO1995022944A1 (fr) | Insert composite pour cupule acetabulaire et procede d'assemblage | |
Derar et al. | Recent patents and designs on hip replacement prostheses | |
WO1992022265A1 (fr) | Prothese de hanche | |
US6120546A (en) | Implantable prosthesis having spring-engaged hole plugs | |
US20200179124A1 (en) | Devices and methods for cementing insert bearing liner into acetabular cup component | |
US11224517B2 (en) | Mechanically coupled revision hip system and method | |
WO1995015132A1 (fr) | Implant orthopedique | |
AU781574B2 (en) | Constrained socket for use with a ball-and-socket joint |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AT AU BB BG BR CA CH CS DE DK ES FI GB HU JP KP KR LK LU MG MN MW NL NO PL RO RU SD SE US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BF BJ CF CG CH CI CM DE DK ES FR GA GB GN GR IT LU MC ML MR NL SE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: CA |