DE2822585A1 - Hip joint prosthesis with dish section - is designed to restrict transmission of circumferential stress using slots or strips - Google Patents

Hip joint prosthesis with dish section - is designed to restrict transmission of circumferential stress using slots or strips

Info

Publication number
DE2822585A1
DE2822585A1 DE19782822585 DE2822585A DE2822585A1 DE 2822585 A1 DE2822585 A1 DE 2822585A1 DE 19782822585 DE19782822585 DE 19782822585 DE 2822585 A DE2822585 A DE 2822585A DE 2822585 A1 DE2822585 A1 DE 2822585A1
Authority
DE
Germany
Prior art keywords
strips
slots
designed
circumferential stress
hip joint
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.)
Granted
Application number
DE19782822585
Other languages
German (de)
Other versions
DE2822585B2 (en
DE2822585C3 (en
Inventor
Helmut D Link
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.)
Waldemar Link GmbH and Co KG
Original Assignee
Waldemar Link GmbH and Co KG
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 Waldemar Link GmbH and Co KG filed Critical Waldemar Link GmbH and Co KG
Priority to DE2822585A priority Critical patent/DE2822585C3/en
Publication of DE2822585A1 publication Critical patent/DE2822585A1/en
Publication of DE2822585B2 publication Critical patent/DE2822585B2/en
Application granted granted Critical
Publication of DE2822585C3 publication Critical patent/DE2822585C3/en
Expired legal-status Critical Current

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
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30324—The prosthesis having different structural features at different locations within the same prosthesis differing in thickness
    • 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
    • A61F2002/30579—Special structural features of bone or joint prostheses not otherwise provided for with mechanically expandable devices, e.g. fixation devices
    • 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0036—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in thickness

Abstract

The internal prosthesis has a dish-shaped joint section of flexible material, being particularly for use as a hip socket. It is designed to restrict the transmission of circumferential stress. It incorporates slots (8), or alternatively strips of material having less rigidity in the circumferential direction. The slots or strips can run in a meridial pattern. The design reduces the risk of the joint between the implant and the bone cement, or between cement and bone, working loose.

Description

Beschreibung description

Die Erfindung betrifft eine Endoprothese mit einem schalenförmigen Gelenkteil aus flexiblem Werkstoff, insbesondere auch eine Hüftpfanne.The invention relates to an endoprosthesis with a cup-shaped Joint part made of flexible material, in particular also a hip socket.

Totale Hüftgelenkprothesen bestehen aus einem den Oberschenkelkopf ersetzenden Metallkopf oder einer den Femurkopf bedeckenden Metallkappe und eier Kunststoffpfanne aus hochmolekularem Polyäthylen als die das Gegenstück bildende, sogenannte Hüftpfanne. Diese Hüftpfanne wird in das Acetabulum einzementiert. Es ist bekannt, daß an beiden Komponenten Lockerungen auftreten können, d. h. die Verbindung zwischen Implantat und Knochenzement und/oder zwischen Knochenzement und Knochen wird durch biologische und mechanische Einflüsse zerstört.Total hip joint prostheses consist of a femoral head replacing metal head or a metal cap covering the femoral head and eggs Plastic pan made of high molecular weight polyethylene as the counterpart, so-called hip socket. This acetabulum is cemented into the acetabulum. It it is known that loosening can occur in both components, i. H. the connection between implant and bone cement and / or between bone cement and bone is destroyed by biological and mechanical influences.

Insbesondere bei dünnschaligen Hüftpfannen aus Kunststoff sind solche Lockerungen beobachtet worden.In particular, there are thin-shell acetabular cups made of plastic Easings have been observed.

Der Erfindung liegt die Aufgabe zugrunde, die Lockerungsgefahr bei dem schalenförmigen Gelenkteil von Endoprothesen zu verringern.The object of the invention is to reduce the risk of loosening to reduce the cup-shaped joint part of endoprostheses.

Die erfindungsgemäße Lösung besteht darin, daß der Gelenkteil mit Einrichtungen zur Hemmung der Übertragung von Ringspannungen versehen ist, die vorzugsweise von Einschnitten oder Streifen geringerer Festigkeit gebildet sind, die zweckmäßigerweise meridial verlaufen.The solution according to the invention is that the joint part with Means to inhibit the transmission of hoop stresses is provided, which is preferably are formed by incisions or strips of lower strength, which are expedient run meridially.

Die Erfindung beruht auf folgender Beobachtung. Ein Ringquerschnitt der Schale, der einer radialen Kraftkomponente unterworfen wird, neigt zu ovaler Verformung. Nur in der Richtung, in welcher die Kraft wirkt, wird er gegen die ihn abstützende Zementschicht und den dahinter liegenden Knochen gepreßt. In der dazu quer liegenden Radialrichtung wird er hingegen von diesen stützenden Teilen abgehoben.The invention is based on the following observation. A ring cross-section the shell, which is subjected to a radial component of force, tends to be more oval Deformation. Only in the direction in which the force acts does he turn against him supporting cement layer and the bone behind it pressed. In addition In the transverse radial direction, however, it is lifted from these supporting parts.

Eine abhebende Wirkung kann auch in dem der Kraftrichtung diametral erltgegengesetzten liegenden Querschnittsteil auftreten. Diese abhebende Wirkung beruht darauf, daß Ringspannungen in dem betrachteten Querschnitt übertragen werden.A lifting effect can also be in the direction of force diametrically The opposite lying cross-sectional part occurs. This lifting effect is based on the fact that ring stresses are transmitted in the cross-section under consideration.

Wird die Übertragung solcher Spannungen gemäß der Erfindung verhindert oder eingeschränkt, so kann die Schale zwar in der Kraftrichtung ausweichen, jedoch werden die nicht unmittelbar belasteten Bereiche des Ringquerschnitts nicht von der stützenden Fläche abgehoben.The transmission of such voltages is prevented according to the invention or restricted, the shell can move in the direction of the force, but it does the areas of the ring cross-section that are not directly loaded are not affected by lifted off the supporting surface.

Dieses Prinzip gilt vornehmlich für konkave Schalen, die von innen nach außen belastet werden, wie die bereits erwähnten Hüftpfannen. Analog ist der Erfindungsgedanke aber auch für den umgekehrten Fall anwendbar, daß eine konvexe Kappe von außen her beansprucht wiid und der belastete Teil radial nach innen nachgibt, wobei die seitlich daran angrenzenden, quer zur Belastungsrichtung liegenden Teile radial nach außen gedrängt und damit von der Unterstützungsfläche abgesprengt werden können.This principle applies primarily to concave shells from the inside are loaded outwards, like the acetabular sockets already mentioned. That is analogous The idea of the invention can also be used in the opposite case, that a convex Cap is stressed from the outside and the loaded part yields radially inwards, the laterally adjoining parts lying transversely to the loading direction pushed radially outward and thus blasted off the support surface can.

Diese Effekte zeigen sich vornehmlich bei dünnen Schalen aus flexiblen Werkstoff.These effects are particularly evident in thin, flexible shells Material.

Die Erfindung wird im folgenden näher unter Bezugnahme auf die in der Zeichnung veranschaulichten Ausführungsbeispiele erläutert. Darin zeigen: Fig. 1 das Verformungsschema in einem Pfannen- Ringquer schnitt; Fig. 2 und 3 eine Draufsicht und eine Seitenansicht auf eine Hüftpfanne und Fig, 4 ,5 und 6 Teilschnitte durch Hüftpfannen.The invention is described in more detail below with reference to the in Illustrated embodiments illustrated in the drawing. They show: Fig. 1 the deformation scheme in a pan ring cross section; Figures 2 and 3 are a plan view and a side view of an acetabular cup and FIGS. 4, 5 and 6 partial sections Acetabular cups.

In Fig. 1 ist der im entspannten Zustand kreisförmige Querschnitt eines schalenförmigen Gelenkteils mit durchgezogener Linie 1 gezeigt. Unter einer Belastung mit der radialen Komponente 2 wird der belastete Teil der Pfanne im Sinne der gestrichelten Linie 3 nach außen verformt. Da der Werkstoff sich einer Dehnung in Umfangsrichtung widersetzt, führen die in dem betrachteten Querschnitt entstehenden Ringspannungen in den quer zur Kraftrichtung 2 liegenden Ringbereichen 4 zu einer radial nach innen gerichteten Kraft 5, die somit im Sinne einer Lösung der Schale von den unterstützenden Flächen gerichtet ist. Auch im Bereich 6 gegenüber dem unmittelbar beanspruchten Bereich 3 mag eine gewisse Kraft 7 in Löserichtung auftreten. Die Entstehung der Kräfte 5 und 6 wird verhindert, wenn die Übertragung von Ringspannungen durch bei 8 angeordnete Trenneinrichtungen zwischen benachbarten Ringabschnitten unterbunden wird.In Fig. 1, the relaxed state is circular cross-section of a shell-shaped joint part is shown with a solid line 1. Under one Load with the radial component 2 is the burdened part the pan deformed outwardly in the sense of the dashed line 3. Because the material resists stretching in the circumferential direction, lead in the considered Cross-section resulting ring stresses in the transverse to the direction of force 2 Ring areas 4 to a radially inwardly directed force 5, which is thus in the sense a release of the shell from the supporting surfaces is directed. Also in the area 6 compared to the directly stressed area 3 may have a certain force 7 in Direction of release occur. The creation of forces 5 and 6 is prevented if the transmission of ring stresses by separating devices arranged at 8 between adjacent ring sections is prevented.

Diese Einrichtungen sind in dem Ausführungsbeispiel einer Hüftpfanne gemäß Fig. 2 und 3 als Schlitze 9 ausgebildet, die meridial verlaufen und vier gleiche Pfannenabschnitte voneinander trennen. Eine Radialkraft, die auf einen dieser Abschnitte wirkt, vermag sich nicht durch Ubertragung von Ringspannungen auf die benachbarten Abschnitte auszuwirken.In the exemplary embodiment, these devices are an acetabulum 2 and 3 formed as slots 9 which run meridially and are four identical Separate the pan sections from each other. A radial force acting on one of these sections does not work by transferring ring stresses to the neighboring ones Impact sections.

Die Pfanne kann im übrigen konventionell ausgebildet sein.The pan can otherwise be of conventional design.

Insbesondere kann sie mit den üblichen Einrichtungen auf der Außenfläche zur formschlüssigen Verbindung mit der Zementschicht versehen sein. Selbstverständlich kann eine größere Zahl von Einschnitten 9 vorgesehen sein, wenn man die an jeder einzelnen dieser Stellen auftretenden Relativbewegungen durch Verteilung auf eine große Zahl verringern will.In particular, it can be used with the usual facilities on the outside surface be provided for a positive connection with the cement layer. Of course a larger number of incisions 9 can be provided, if one considers each individual of these points occurring relative movements by distribution on a want to reduce large numbers.

Die Fig. 4 bis 6 zeigen andere Einrichtungen zur Hemmung der Übertragung von Ringspannungen. Im Falle der Fig. 4 sind diese als Streifen mit einer geringeren Wanddicke ausgeführt, die im Querschnitt zickzackförmig oder gebogen verläuft, um in Umfangsrichtung (also in der Zeichenebene) verlaufenden Kräften besser nachgeben zu können.Figures 4-6 show other means for inhibiting transmission of ring stress. In the case of FIG. 4, these are as strips with a smaller one Wall thickness running, which runs zigzag or curved in cross section to In the circumferential direction (i.e. in the plane of the drawing) giving way to forces running better to be able to.

Fig. 5 zeigt einen der Fig. 4 entsprechenden Teilquerschnitt durch einen Streifen verringerter Dicke in der Schale. Die Wanddicke ist in dem Streifen so stark reduziert, daß sich das Material im Streifenbereich unter den atlftretenden Kräften elastisch oder plastisch verformen kann. Die Ausführungen gemäß Fig.FIG. 5 shows a partial cross section corresponding to FIG. 4 a strip of reduced thickness in the shell. The wall thickness is in the strip reduced so much that the material in the strip area is under the breathable Forces elastic or can deform plastically. The executions according to Fig.

4 und 5 haben gegenüber derjenigen gemäß Fig. 2 und 3 den Vorteil, daß sie das Eindringen von Knochenzement in den Gleitbereich des Gelenks verhindern.4 and 5 have the advantage over those according to FIGS. 2 and 3, that they prevent the penetration of bone cement into the sliding area of the joint.

Fig. 6 zeigt einen Querschnitt durch eine Dehnfuge in überlappender Anordnung, die eine leichte Relativbewegung gestattet und gleichfalls den Eintritt von Knochenzement in den Gleitbereich des Gelenks verhindert.Fig. 6 shows a cross section through an expansion joint in an overlapping manner Arrangement that allows slight relative movement and also entry of bone cement in the sliding area of the joint.

LeerseiteBlank page

Claims (1)

Endoprothese mit einem schalenförmigen Gelenkteil, insbesondere Hüftpfanne Ansprüche 1. Endoprothese mit einem schalenförmigen Gelenkteil, insbesondere Hüftpfanne, aus flexiblem Werkstoff, dadurch gekennzeichnet, daß der Gelenkteil mit Einrichtungen (9) zur Hemmung der Ubertragung von Ringspannungen versehen 2. Endoprothese nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtungen zur Hemmung der Übertragung von Ringspannungen von Einschnitten (9) gebildet sind.Endoprosthesis with a cup-shaped joint part, in particular a hip socket Claims 1. Endoprosthesis with a cup-shaped joint part, in particular hip socket, made of flexible material, characterized in that the joint part with devices (9) to inhibit the transmission of ring stresses provided 2. Endoprosthesis according to Claim 1, characterized in that the means for inhibiting the transmission are formed by ring stresses of incisions (9). 3. Endoprothese nach Anspruch 1, dadurch gekennze chnet, daß die Einrichtungen zur Hemmung der Übertragung von Ringspannungen von Streifen mit in Ringrichtung geringerer Festigkeit gebildet sind.3. Endoprosthesis according to claim 1, characterized in that the devices to inhibit the transfer of hoop stresses from strips with in the direction of the ring lower strength are formed. 4. Endoprothese nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Einschnitte oder Streifen meridial verlaufen.4. Endoprosthesis according to claim 2 or 3, characterized in that the incisions or stripes run meridially.
DE2822585A 1978-05-24 1978-05-24 Cup-shaped joint part for an endoprosthesis Expired DE2822585C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2822585A DE2822585C3 (en) 1978-05-24 1978-05-24 Cup-shaped joint part for an endoprosthesis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2822585A DE2822585C3 (en) 1978-05-24 1978-05-24 Cup-shaped joint part for an endoprosthesis

Publications (3)

Publication Number Publication Date
DE2822585A1 true DE2822585A1 (en) 1979-11-29
DE2822585B2 DE2822585B2 (en) 1980-03-13
DE2822585C3 DE2822585C3 (en) 1980-10-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE2822585A Expired DE2822585C3 (en) 1978-05-24 1978-05-24 Cup-shaped joint part for an endoprosthesis

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DE (1) DE2822585C3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001394A1 (en) * 1984-08-28 1986-03-13 Rob. Mathys Co. Artificial articular cavity for the hip with hydrostatic head support
FR2589059A1 (en) * 1985-10-25 1987-04-30 Duthoit Etienne COTYLOIDAL COMPONENT FOR NON-CEMENTED HIP PROSTHESIS
EP0265712A1 (en) * 1986-10-16 1988-05-04 Protek AG Acetabular component for a total hip prosthesis
CH671509A5 (en) * 1986-11-07 1989-09-15 Protek Ag Acetabulum for hip joint prosthesis
EP1181909A1 (en) * 2000-08-21 2002-02-27 Bone & Joint Research S.A. Elastic acetabular anchoring brace for hip acetabular joint insert made of rigid material

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8324860U1 (en) * 1983-08-30 1985-08-08 orthoplant Endoprothetik GmbH, 2800 Bremen Hip joint prosthesis socket
DE8623855U1 (en) * 1986-09-05 1986-10-16 Felmet, Gernot, Dr. med., 6990 Bad Mergentheim Self-tensioning acetabular cup that can be implanted without cement
DE8710796U1 (en) * 1987-08-04 1987-11-19 Mecron Medizinische Produkte Gmbh, 1000 Berlin, De
DE19616058B4 (en) * 1996-04-23 2006-04-06 Cerasiv Gmbh Innovatives Keramik-Engineering Prosthetic socket

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001394A1 (en) * 1984-08-28 1986-03-13 Rob. Mathys Co. Artificial articular cavity for the hip with hydrostatic head support
FR2589059A1 (en) * 1985-10-25 1987-04-30 Duthoit Etienne COTYLOIDAL COMPONENT FOR NON-CEMENTED HIP PROSTHESIS
EP0225819A1 (en) * 1985-10-25 1987-06-16 Etienne Duthoit Acetabular cup for a hip prosthesis without cement
US4828565A (en) * 1985-10-25 1989-05-09 Etienne Duthoit Cotyloidal component for a non-cemented hip prosthesis
EP0265712A1 (en) * 1986-10-16 1988-05-04 Protek AG Acetabular component for a total hip prosthesis
US4792337A (en) * 1986-10-16 1988-12-20 Protek Ag Acetabulum part for a total hip prosthesis
CH671509A5 (en) * 1986-11-07 1989-09-15 Protek Ag Acetabulum for hip joint prosthesis
EP1181909A1 (en) * 2000-08-21 2002-02-27 Bone & Joint Research S.A. Elastic acetabular anchoring brace for hip acetabular joint insert made of rigid material

Also Published As

Publication number Publication date
DE2822585B2 (en) 1980-03-13
DE2822585C3 (en) 1980-10-30

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