FR2668055A1 - Screw-type acetabular implant - Google Patents

Screw-type acetabular implant Download PDF

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Publication number
FR2668055A1
FR2668055A1 FR9013326A FR9013326A FR2668055A1 FR 2668055 A1 FR2668055 A1 FR 2668055A1 FR 9013326 A FR9013326 A FR 9013326A FR 9013326 A FR9013326 A FR 9013326A FR 2668055 A1 FR2668055 A1 FR 2668055A1
Authority
FR
France
Prior art keywords
ring
core
bore
implant according
frustoconical shape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR9013326A
Other languages
French (fr)
Inventor
Henry Jean-Marc
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ICP France
ICP SA
Original Assignee
ICP France
ICP SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ICP France, ICP SA filed Critical ICP France
Priority to FR9013326A priority Critical patent/FR2668055A1/en
Publication of FR2668055A1 publication Critical patent/FR2668055A1/en
Withdrawn legal-status Critical Current

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Classifications

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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • 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
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    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
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    • 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
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    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4609—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of acetabular cups
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    • 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
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0006—Rounded shapes, e.g. with rounded corners circular
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
    • A61F2230/0021—Angular shapes square
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0067—Three-dimensional shapes conical
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0069—Three-dimensional shapes cylindrical
    • 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

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  • 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

The acetabular implant comprising a screw-type ring (1) and a core (2) is distinguished by the fact that the bore (1a) of the ring (1) is of frustoconical shape communicating, in the area of its polar zone, with an open base (1b) designed to ensure the clipping and the rotational locking of the core (2) of frustoconical shape complementing that of the said bore, the lower part of the core (2) having shapes (2a) complementing those established in the polar zone of the ring (1) and capable of receiving an impactor member, the equatorial part being completely free.

Description

Implant cotyloidien vissé
On rappelle d'une manière connue qu'un implant cotyloîdien comprend un anneau généralement réalisé en métal et apte à recevoir un noyau exécuté en polyéthylène.Screwed acetabular implant
It is recalled in a known manner that an acetabular implant comprises a ring generally made of metal and capable of receiving a core made of polyethylene.

Ce type d'implant est destiné à remplacer la cavité cotyloïde de l'os illiaque.This type of implant is intended to replace the acetabular cavity of the iliac bone.

Plus particulièrement, l'invention concerne les anneaux vissés, c'est-à-dire ceux dont la périphérie externe est agencée pour assurer, au fur et à mesure de leur impaction au moyen d'un outil approprié, l'autotaraudage de la cavité cotyloïde. More particularly, the invention relates to screwed rings, that is to say those whose external periphery is arranged to ensure, as and when they are impacted by means of an appropriate tool, the self-tapping of the cavity acetabulum.

Un des problèmes que se propose de résoudre 1 ' invention est de faciliter la pose de l'ensemble de l'implant, notamment du noyau dans l'anneau. One of the problems which the invention proposes to solve is to facilitate the installation of the entire implant, in particular the core in the ring.

En effet, dans de nombreux implants cotyloldiens, la mise en place du noyau s'effectue au moyen de crans disposés sur le bord périphérique supérieur et aptes à coopérer avec un outil d'impaction approprié. Compte-tenu du positionnement de ces crans, ces derniers peuvent être masqués par des osthéophites, de sorte qu'il est parfois très difficile de retrouver ces crans pour le positionnement de l'organe impacteur. Indeed, in many acetabular implants, the establishment of the core is carried out by means of notches arranged on the upper peripheral edge and capable of cooperating with an appropriate impact tool. Given the positioning of these notches, the latter can be masked by osteophites, so that it is sometimes very difficult to find these notches for the positioning of the impactor organ.

Un tel problème est résolu en ce que l'alésage de l'anneau est de forme tronconique en communication au niveau de sa zone polaire avec un fond ouvert agencé pour assurer le clipsage et le blocage en rotation du noyau de forme tronconique complémentaire à celle dudit alésage, la partie inférieure du noyau présentant des formes complémentaires de celles établies dans la zone polaire de l'anneau et aptes à recevoir un organe impacteur, ladite partie équatoriale étant entièrement libre.  Such a problem is solved in that the bore of the ring is of frustoconical shape in communication at its polar zone with an open bottom arranged to ensure the clipping and the blocking in rotation of the core of frustoconical shape complementary to that of said said bore, the lower part of the core having shapes complementary to those established in the polar region of the ring and capable of receiving an impactor member, said equatorial part being entirely free.

Avantageusement, les agencements du fond ouvert de l'anneau sont constitués par des empreintes semicirculaires établies à partir dudit fond sous forme d'une large ouverture circulaire, lesdites empreintes étant combinées avec les agencements de clipsage, sous forme notamment de lèvres (lob2).  Advantageously, the arrangements of the open bottom of the ring are constituted by semicircular imprints established from said bottom in the form of a large circular opening, said imprints being combined with the clipping arrangements, in the form in particular of lips (lob2).

Suivant une autre caractéristique, et pour résoudre le problème posé de favoriser l'impaction de l'anneau en permettant de chasser les copeaux osseux, la périphérie externe de l'anneau présente des encoches verticales parallèles. According to another characteristic, and in order to solve the problem posed of favoring the impaction of the ring by making it possible to drive out the bone chips, the external periphery of the ring has parallel vertical notches.

Avantageusement, le fond des encoches est incliné. Advantageously, the bottom of the notches is inclined.

Dans une forme de réalisation préférée, la périphérie externe de l'anneau présente, en débordement, dans un - plan horizontal, des nervures parallèles profilées faisant office de filetage, lesdites nervures étant séparées par des zones circulaires. In a preferred embodiment, the outer periphery of the ring has, in overflow, in a horizontal plane, profiled parallel ribs acting as thread, said ribs being separated by circular zones.

L'invention est exposée, ci-après plus en détail à l'aide des dessins annexés, dans lesquels
La figure 1 est une vue en coupe longitudinale de l'anneau. The invention is set out below in more detail with the aid of the accompanying drawings, in which
Figure 1 is a longitudinal sectional view of the ring.

La figure 2 est une vue de côté correspondant à la figure 1. Figure 2 is a side view corresponding to Figure 1.

La figure 3 est une vue en coupe partielle du noyau. Figure 3 is a partial sectional view of the core.

La figure 4 est une vue de côté correspondant à la figure 3. FIG. 4 is a side view corresponding to FIG. 3.

La figure 5 est une vue en coupe longitudinale, montrant la mise en place du noyau dans l'anneau. Figure 5 is a longitudinal sectional view showing the establishment of the core in the ring.

La figure 6 est une vue en plan correspondant à la figure 5. FIG. 6 is a plan view corresponding to FIG. 5.

D'une manière connue et comme le montre la figure 5, l'implant cotyloidien comprend un anneau métallique (1) et un noyau en polyéthylène (2). In a known manner and as shown in FIG. 5, the acetabular implant comprises a metal ring (1) and a polyethylene core (2).

Selon l'invention, l'anneau (1) présente un alésage (la) de forme tronconique. Cet élasage (la) est en communication avec la zone polaire de l'anneau agencée sous forme d'une large ouverture (lb) (figure 1). According to the invention, the ring (1) has a tapered bore (la). This trimming (la) is in communication with the polar zone of the ring arranged in the form of a large opening (lb) (Figure 1).

L'ouverture (lb) de la zone polaire présente des agencements (bibi) conformés pour assurer le clipsage et le blocage en rotation du noyau (2). Par exemple, ces agencements (obi) sont constitués par des empreintes semicirculaires décalées angulairement de 900 et formées à partir de 1l'ouverture (lb) (figure 2). En outre, ces agencements (lob1) sont combinés avec des parties profilées (lb2), sous forme par exemple de lèvres, aptes à assurer le clipsage du noyau (2).The opening (lb) of the polar zone has arrangements (bibi) shaped to ensure the clipping and the blocking in rotation of the core (2). For example, these arrangements (obi) are formed by semicircular impressions angularly offset by 900 and formed from the opening (lb) (Figure 2). In addition, these arrangements (lob1) are combined with profiled parts (lb2), in the form for example of lips, capable of ensuring the clipping of the core (2).

A noter que la large ouverture (lb) pratiquée dans la zone polaire de l'anneau (1) permet de tasser du greffon afin de faciliter la repousse osseuse. Note that the large opening (lb) made in the polar area of the ring (1) allows to compact the graft to facilitate bone regrowth.

Le noyau (2) présente une forme extérieure contronique complémentaire de celle de l'alésage du noyau (i). En outre, ce noyau (2) présente une cavité interne hémisphérique (2b) apte à coopérer avec la tête fémorale. The core (2) has an external conical shape complementary to that of the bore of the core (i). In addition, this core (2) has an internal hemispherical cavity (2b) capable of cooperating with the femoral head.

Selon l'invention, la partie inférieure du noyau (2) présente des formes (2a) complémentaires de celles formées au niveau de la zone polaire de l'anneau (1). Ces formes (2a) sont en outre déterminées pour recevoir un organe impacteur, non représenté, pour assurer la mise en place et le positionnement angulaire du noyau (2) dans le fond (lb) de l'anneau (1), en vue du blocage en rotation dudit noyau (1). Il apparait donc que l'ensemble de l'implant ne présente pas de débord équatorial dans sa partie supérieure. According to the invention, the lower part of the core (2) has shapes (2a) complementary to those formed at the polar zone of the ring (1). These shapes (2a) are also determined to receive an impactor member, not shown, to ensure the positioning and the angular positioning of the core (2) in the bottom (lb) of the ring (1), in view of the locking of said core (1) in rotation. It therefore appears that the entire implant does not have an equatorial projection in its upper part.

L'anneau (i) est conformé pour être impacté dans la cavité cotyloïde, directement par vissage, sans employer de vis spéciales d'impaction. Dans ce but, et dans l'exemple de réalisation illustrée figure 1, la périphérie externe de l'anneau présente, en débordement, des nervures profilées (lc) faisant office de filetage. Ces nervures (lc) sont établies selon différents plans parallèles entre eux, et aux bords supérieur et inférieur de l'anneau. Ces nervures (ic) sont séparées par des zones circulaires (id). The ring (i) is shaped to be impacted into the acetabular cavity, directly by screwing, without using special impaction screws. For this purpose, and in the embodiment illustrated in Figure 1, the outer periphery of the ring has, in overflow, profiled ribs (lc) acting as thread. These ribs (lc) are established in different planes parallel to each other, and to the upper and lower edges of the ring. These ribs (ic) are separated by circular zones (id).

Suivant une autre caractéristique, la périphérie externe de l'anneau présente des encoches (le) verticales et parallèles formées depuis le bord supérieur de 11 anneau jusque dans sa zone polaire. Le fond de ces encoches est incliné. According to another characteristic, the external periphery of the ring has vertical and parallel notches (it) formed from the upper edge of the ring up to its polar zone. The bottom of these notches is tilted.

Les avantages ressortent bien de la description, en particulier on souligne et on rappelle
- l'outil d'impaction coopère directement au niveau de la zone polaire assurant ainsi une pose rapide et simple.The advantages are apparent from the description, in particular it is emphasized and recalled
- the impaction tool cooperates directly at the level of the polar zone, thus ensuring rapid and simple installation.

- la large ouverture formée au niveau de la zone polaire permet de tasser du greffon facilitant la repousse osseuse. - the large opening formed at the level of the polar zone makes it possible to compact the graft facilitating bone regrowth.

- la partie équatoriale de l'implant est totalement libre.  - the equatorial part of the implant is completely free.

Claims (5)

REVENDICATIONS -1- Implant cotyloidien comprenant un anneau vissé (i) et un noyau (2), caractérisé en ce que l'alésage (la) de l'anneau (i) est de forme tronconique en communication au niveau de sa zone polaire avec un fond ouvert (lb) agencé pour assurer le clipsage et le blocage en rotation du noyau (2) de forme tronconique complémentaire à celle dudit alésage, la partie inférieure du noyau (2) présentant des formes complémentaires (2a) de celles établies dans la zone polaire de l'anneau (i) et aptes à recevoir un organe impacteur, la partie équatoriale étant entièrement libre.-1- Cotyloid implant comprising a screwed ring (i) and a core (2), characterized in that the bore (la) of the ring (i) is of frustoconical shape in communication at the level of its polar zone with a open bottom (lb) arranged to ensure the clipping and locking in rotation of the core (2) of frustoconical shape complementary to that of said bore, the lower part of the core (2) having shapes complementary (2a) to those established in the area polar of the ring (i) and capable of receiving an impactor member, the equatorial part being entirely free. -2- Implant selon la revendication 1, caractérisé en ce que les agencements du fond ouvert (lb) de l'anneau (i) sont constitués par des empreintes semi-circulaires (bibi) établies à partir dudit fond sous forme d'une large ouverture circulaire, lesdites empreintes étant combinées avec les agencements de clipsage, sous forme notamment de lèvres (lob2). -2- Implant according to claim 1, characterized in that the arrangements of the open bottom (lb) of the ring (i) are constituted by semicircular impressions (bibi) established from said bottom in the form of a wide circular opening, said imprints being combined with the clipping arrangements, in particular in the form of lips (lob2). -3- Implant selon la revendication 1, caractérisé en ce que la périphérie externe de l'anneau (1) présente des encoches verticales parallèles (le). -3- Implant according to claim 1, characterized in that the outer periphery of the ring (1) has parallel vertical notches (le). -4- Implant selon la revendication 3, caractérisé en ce que le fond des encoches (le) est incliné.-4- Implant according to claim 3, characterized in that the bottom of the notches (the) is inclined. -5- Implant selon la revendication i, caractérisé en ce que la périphérie externe de l'anneau (i) présente en débordement, dans un plan horizontal, des nervures parallèles et profilées (tic) faisant office de filetage, lesdites nervures étant séparées par des zones circulaires (in). -5- Implant according to claim i, characterized in that the outer periphery of the ring (i) has in overflow, in a horizontal plane, parallel and profiled ribs (tic) acting as thread, said ribs being separated by circular areas (in).
FR9013326A 1990-10-19 1990-10-19 Screw-type acetabular implant Withdrawn FR2668055A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9013326A FR2668055A1 (en) 1990-10-19 1990-10-19 Screw-type acetabular implant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9013326A FR2668055A1 (en) 1990-10-19 1990-10-19 Screw-type acetabular implant

Publications (1)

Publication Number Publication Date
FR2668055A1 true FR2668055A1 (en) 1992-04-24

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FR9013326A Withdrawn FR2668055A1 (en) 1990-10-19 1990-10-19 Screw-type acetabular implant

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FR (1) FR2668055A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0666067A1 (en) * 1994-02-07 1995-08-09 SULZER Medizinaltechnik AG Acetabular cup of a hip joint prothesis having at least two shells and hip joint prosthesis with such an acetabular cup
US5609648A (en) * 1994-02-07 1997-03-11 Sulzer Medizinaltechnik Ag Acetabular cup assembly
WO2001005338A1 (en) * 1999-07-15 2001-01-25 Ceramtec Ag Innovative Ceramic Engineering Ceramic sandwich insert for an artificial hip joint
FR2824258A1 (en) 2001-05-04 2002-11-08 Groupe Lepine Cup implant, for a hip replacement prosthesis, has a dome with an inner cavity in a truncated cone shape to take a structured sliding core of ceramic or polymer material without increasing its dimensions
US8123815B2 (en) 2008-11-24 2012-02-28 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US8308810B2 (en) 2009-07-14 2012-11-13 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0666067A1 (en) * 1994-02-07 1995-08-09 SULZER Medizinaltechnik AG Acetabular cup of a hip joint prothesis having at least two shells and hip joint prosthesis with such an acetabular cup
US5609648A (en) * 1994-02-07 1997-03-11 Sulzer Medizinaltechnik Ag Acetabular cup assembly
WO2001005338A1 (en) * 1999-07-15 2001-01-25 Ceramtec Ag Innovative Ceramic Engineering Ceramic sandwich insert for an artificial hip joint
FR2824258A1 (en) 2001-05-04 2002-11-08 Groupe Lepine Cup implant, for a hip replacement prosthesis, has a dome with an inner cavity in a truncated cone shape to take a structured sliding core of ceramic or polymer material without increasing its dimensions
US8123815B2 (en) 2008-11-24 2012-02-28 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US9445903B2 (en) 2008-11-24 2016-09-20 Biomet Manufacturing, Llc Multi-bearing acetabular prosthesis
US8308810B2 (en) 2009-07-14 2012-11-13 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US9445904B2 (en) 2009-07-14 2016-09-20 Biomet Manufacturing, Llc Multiple bearing acetabular prosthesis

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