DE3741488A1 - Prosthesis for a hip or knee joint - Google Patents

Prosthesis for a hip or knee joint

Info

Publication number
DE3741488A1
DE3741488A1 DE19873741488 DE3741488A DE3741488A1 DE 3741488 A1 DE3741488 A1 DE 3741488A1 DE 19873741488 DE19873741488 DE 19873741488 DE 3741488 A DE3741488 A DE 3741488A DE 3741488 A1 DE3741488 A1 DE 3741488A1
Authority
DE
Germany
Prior art keywords
joint
joint prosthesis
resilient element
prosthesis according
hip
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Withdrawn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
DE19873741488
Other languages
German (de)
Inventor
Hermann Dipl Ing Fischer
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to DE19873741488 priority Critical patent/DE3741488A1/en
Publication of DE3741488A1 publication Critical patent/DE3741488A1/en
Withdrawn legal-status Critical Current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
    • 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
    • A61F2/38—Joints for elbows or knees
    • A61F2/3836—Special connection between upper and lower leg, e.g. constrained
    • 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
    • A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
    • 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
    • A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring 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
    • 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
    • A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
    • A61F2002/30571—Leaf springs
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30624—Hinged joint, e.g. with transverse axle restricting the movement

Abstract

The prosthesis for a hip or knee joint with two carrier parts provided for fixing to one bone in each case has between the carrier parts at least one resilient element. This makes it possible to reduce impact stresses which shorten the life of the joint prosthesis.

Description

Die Erfindung betrifft eine Gelenkprothese für ein Hüft- oder Kniegelenk mit zwei zur Befestigung an je einem Knochen vorgesehenen Tragteilen.The invention relates to a joint prosthesis for a hip or Knee joint with two for attachment to one bone each provided supporting parts.

Die Lebensdauer von Gelenkprothesen ist begrenzt. Ein Grund hierfür liegt in den stoßartigen Beanspruchungen der Gelenkteile, die bei jedem Schritt auftreten.The lifespan of joint prostheses is limited. A reason this is due to the shock loads on the joint parts, that occur at every step.

Der Erfindung liegt die Aufgabe zugrunde, zur Erhöhung der Lebensdauer die Stoßbelastungen zu vermindern.The invention has for its object to increase the Life to reduce the impact loads.

Erfindungsgemäß wird diese Aufgabe durch Anwendung des Merkmals des Kennzeichens des Anspruchs 1 gelöst. Bei Anwendung der Erfindung wird die Zeit bis zum Aufbringen der vollen Belastung auf die Gelenkprothese etwas verlängert und dadurch eine stoßartige Belastung vermindert.According to the invention, this object is achieved by using the feature of the characterizing part of claim 1 solved. When using the Invention is the time until the full load is applied slightly extended to the prosthetic joint and thereby one impact load is reduced.

Drei Ausführungsbeispiele der Erfindung sind anhand der Zeichnung beschrieben. Es zeigenThree embodiments of the invention are based on the drawing described. Show it

Fig. 1 eine schematische, teilweise aufgebrochene Seitenansicht eines Hüftgelenkes, Fig. 1 is a schematic, partially broken side view of a hip joint,

Fig. 2 eine schematische, teilweise aufgebrochene Seitenansicht eines Kniegelenkes und Fig. 2 is a schematic, partially broken side view of a knee joint and

Fig. 3 eine der Fig. 2 entsprechende Darstellung eines weiteren Ausführungsbeispieles.
 Fig. 3 is a representation corresponding to FIG. 2 of another embodiment.

Die Hüftgelenkprothese nach Fig. 1 umfaßt einen schalenförmigen Gelenkteil 1, der mittels eines Tragteiles 2 an einem Hüftknochen 3 befestigt ist. Der schalenförmige Gelenkteil 1 wirkt mit einem kugelförmigen Gelenkteil 4 zusammen. Der Gelenkteil 4 ist auf das Ende eines als metallische Federzunge ausgebildeten federnden Elementes 5 aufgesetzt. Das federnde Element 5 sitzt an einem Tragteil 6, der in einen Wadenknochen 7 implantiert ist. Er ist also an dem Tragteil angeordnet, über den die Stoßbelastung auf die Gelenkprothese übertragen wird. Dabei ist das federnde Element 5 zur Erhöhung des Federungsvermögens gegenüber der Längsachse des Tragteiles 6 abgewinkelt angeordnet.The hip joint prosthesis according to Fig. 1 comprises a cup-shaped hinge part 1 which is attached to a hip bone 3 by means of a support part 2. The cup-shaped joint part 1 interacts with a spherical joint part 4 . The joint part 4 is placed on the end of a resilient element 5 designed as a metallic spring tongue. The resilient element 5 sits on a support part 6 , which is implanted in a calf bone 7 . It is therefore arranged on the supporting part, via which the shock load is transmitted to the joint prosthesis. The resilient element 5 is arranged at an angle to increase the resilience to the longitudinal axis of the support member 6 .

Bei Auftreten einer stoßartigen Belastung wird ein Teil der Stoßenergie vom federnden Element 5 aufgenommen, das sich dabei etwas verformt. Dieser Teil der Stoßenergie wird erst mit Verzögerung über den Gelenkteil 4 auf den Gelenkteil übertragen. Infolgedessen werden die beiden Gelenkteile 1, 4 nicht kurzfristig mit der vollen Stoßenergie belastet.When an impact-like load occurs, part of the impact energy is absorbed by the resilient element 5 , which deforms somewhat in the process. This part of the impact energy is only transferred with a delay via the joint part 4 to the joint part. As a result, the two joint parts 1 , 4 are not briefly loaded with the full impact energy.

Beim Ausführungsbeispiel gemäß Fig. 2, das ein Kniegelenk in gestrecktem Zustand zeigt, ist in ein Tragteil 10, das zum Einsatz in einen Schienbeinknochen 11 bestimmt ist, ein federndes Element 12 in Form eines Federbandes aus Metall eingesetzt. Das federnde Element 12 steht über ein Scharnier 13 mit einem weiteren gleichartigen federnden Element 14 in Verbindung, das in einen Tragteil 15 eingesetzt ist. Der Tragteil 15 ist zur Implantation in einen Oberschenkelknochen 16 bestimmt.In the exemplary embodiment according to FIG. 2, which shows a knee joint in the stretched state, a resilient element 12 in the form of a spring band made of metal is inserted into a supporting part 10 which is intended for use in a shin bone 11 . The resilient element 12 is connected via a hinge 13 to a further similar resilient element 14 which is inserted into a support part 15 . The support part 15 is intended for implantation in a femur 16 .

Die beiden federnden Elemente 12, 14 weisen jeweils zwischen dem Scharnier 13 und dem Tragteil 10 bzw. 15 je eine S-förmige Ausbiegung 17 bzw. 18 auf. An den beiden Ausbiegungen 17, 18 ist jeweils ein Anschlag 19, 20 befestigt. Die beiden Anschläge 19, 20 liegen, wie Fig. 2 zeigt, in der senkrechten Lage der Gelenkprothese aneinander an. Weiterhin weisen die federnden Elemente 12, 14 je einen rechteckigen Querschnitt auf, dessen breite Seiten senkrecht zu der Ebene in der die Gelenkbewegung erfolgt, angeordnet sind. Hierdurch wird einem unerwünschten seitlichen Ausbiegen entgegengewirkt. The two resilient elements 12 , 14 each have an S-shaped bend 17 or 18 between the hinge 13 and the supporting part 10 or 15 . A stop 19 , 20 is attached to each of the two bends 17 , 18 . As shown in FIG. 2, the two stops 19 , 20 lie against one another in the vertical position of the joint prosthesis. Furthermore, the resilient elements 12 , 14 each have a rectangular cross section, the broad sides of which are arranged perpendicular to the plane in which the articulation movement takes place. This counteracts undesired lateral bending.

Bei einer stoßartigen Belastung der Gelenkprothese verformen sich die S-förmigen Ausbiegungen 17, 18 und nehmen dadurch wiederum kurzfristig einen Teil der Stoßenergie auf.When the joint prosthesis is subjected to an impact load, the S-shaped bends 17 , 18 deform and thereby in turn absorb part of the impact energy for a short time.

Beim Ausführungsbeispiel gemäß Fig. 3 , das ein Kniegelenk in abgewinkelter Stellung zeigt, ist zwischen zwei Tragteilen 30, 31, die je in einen Knochen 32, 33 einsetzbar sind, ein durchgehendes federndes Element 34 in Form eines Federbandes aus Metall vorgesehen. Das federnde Element 34 weist, wiederum einen rechteckigen Querschnitt auf. Dabei sind seine breiten Seiten senkrecht zu der Ebene angeordnet, in der die Gelenkbewegung erfolgt. Das federnde Element 34 weist in der Mitte zwischen den Tragteilen 30, 31 eine U-förmige Ausbiegung 35 auf. Um ein definiertes Abbiegen des elastischen Elementes 34 beim Bewegen des Beines in einem bestimmten Bereich zu erreichen, kann ferner die Querschnittsfläche entlang einer oder mehrerer senkrecht zur Längsrichtung des Elementes verlaufender Linien reduziert sein.In the exemplary embodiment according to FIG. 3, which shows a knee joint in the angled position, a continuous resilient element 34 in the form of a spring band made of metal is provided between two support parts 30 , 31 , each of which can be inserted into a bone 32 , 33 . The resilient element 34 , in turn, has a rectangular cross section. Its broad sides are arranged perpendicular to the plane in which the joint movement takes place. The resilient element 34 has a U-shaped bend 35 in the middle between the supporting parts 30 , 31 . In order to achieve a defined bending of the elastic element 34 when the leg is moved in a certain area, the cross-sectional area along one or more lines perpendicular to the longitudinal direction of the element can also be reduced.

Anstelle metallischer federnder Elemente können auch solche aus einem federnden Kunststoff, zweckmäßig einem mit einer Verstärkungseinlage versehenen Kunststoff, Verwendung finden.Instead of metallic resilient elements, they can also be made of a resilient plastic, suitably one with a Reinforcement insert provided plastic, find use.

Da die S- oder U-förmigen Ausbiegungen zur Erzielung des gewünschten Federungsvermögens dienen, können auch zwei oder mehr an einem elastischen Element vorgesehen sein.Since the S or U-shaped bends to achieve the desired suspension capacity can also serve two or more be provided on an elastic element.

Claims (8)

1. Gelenkprothese für ein Hüft- oder Kniegelenk mit zwei zur Befestigung an je einem Knochen vorgesehenen Tragteilen, dadurch gekennzeichnet, daß zwischen den Tragteilen (2, 6; 10, 15; 30, 31) mindestes ein federndes Element (5; 12, 14; 34) vorgesehen ist.1. Joint prosthesis for a hip or knee joint with two supporting parts provided for attachment to one bone each, characterized in that between the supporting parts ( 2 , 6 ; 10 , 15 ; 30 , 31 ) at least one resilient element ( 5 ; 12 , 14 ; 34 ) is provided. 2. Gelenkprothese nach Anspruch 1, dadurch gekennzeichnet, daß das federnde Element (5) zwischen einem Tragteil (6) und einem daran angeschlossenen Gelenkteil (4) angeordnet ist.2. Joint prosthesis according to claim 1, characterized in that the resilient element ( 5 ) is arranged between a support part ( 6 ) and a joint part ( 4 ) connected thereto. 3. Gelenkprothese nach Anspruch 2, dadurch gekennzeichnet, daß das federnde Element (5) an dem Tragteil (6) angeschlossen ist, der zum Einsatz in den stoßartigen Belastungen auf die Gelenkprothese übertragenden Schienbeinknochen (7) bestimmt ist.3. Joint prosthesis according to claim 2, characterized in that the resilient element ( 5 ) is connected to the supporting part ( 6 ) which is intended for use in the shock-like loads on the joint prosthesis-transmitting shinbones ( 7 ). 4. Gelenkprothese nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das federnde Element (5) als eine vom Tragteil (6) ausgehende, am freien Ende ein Gelenkteil (4) tragende, gegenüber diesem abgewinkelte Federzunge ausgebildet ist.4. Joint prosthesis according to at least one of the preceding claims, characterized in that the resilient element ( 5 ) as a starting from the support part ( 6 ), at the free end of a joint part ( 4 ) carrying, angled spring tongue is formed. 5. Gelenkprothese nach mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das fedende Element (12, 14; 34) als ein die beiden Tragteile verbindendes Federband ausgebildet ist.5. Joint prosthesis according to at least one of claims 1 to 3, characterized in that the resilient element ( 12 , 14 ; 34 ) is designed as a spring band connecting the two supporting parts. 6. Gelenkprothese nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das federnde Element (12, 14) durch ein Scharnier (13) unterbrochen ist und Anschläge (19, 20) trägt, die in der Streckstellung der Gelenkprothese aneinander anliegen. 6. Joint prosthesis according to at least one of the preceding claims, characterized in that the resilient element ( 12 , 14 ) is interrupted by a hinge ( 13 ) and carries stops ( 19 , 20 ) which abut one another in the extended position of the joint prosthesis. 7. Gelenkprothese nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Federelement (12, 14; 34) mindestens eine U- oder S-förmige Ausbiegung (17, 18; 35) aufweist.7. Joint prosthesis according to at least one of the preceding claims, characterized in that the spring element ( 12 , 14 ; 34 ) has at least one U- or S-shaped bend ( 17 , 18 ; 35 ). 8. Gelenkprothese nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das federnde Element (12, 14; 34) einen rechteckigen Querschnitt aufweist und seine breiten Seiten senkrecht zur Ebene, in der die Gelenkbewegung erfolgt, angeordnet sind.8. Joint prosthesis according to at least one of the preceding claims, characterized in that the resilient element ( 12 , 14 ; 34 ) has a rectangular cross section and its wide sides are arranged perpendicular to the plane in which the joint movement takes place.
DE19873741488 1987-12-08 1987-12-08 Prosthesis for a hip or knee joint Withdrawn DE3741488A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873741488 DE3741488A1 (en) 1987-12-08 1987-12-08 Prosthesis for a hip or knee joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873741488 DE3741488A1 (en) 1987-12-08 1987-12-08 Prosthesis for a hip or knee joint

Publications (1)

Publication Number Publication Date
DE3741488A1 true DE3741488A1 (en) 1989-06-22

Family

ID=6342078

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873741488 Withdrawn DE3741488A1 (en) 1987-12-08 1987-12-08 Prosthesis for a hip or knee joint

Country Status (1)

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DE (1) DE3741488A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0524874A1 (en) * 1991-07-24 1993-01-27 Hades Joint prosthesis, especially trapezoid-metacarpal and digital joint
WO1998025551A1 (en) * 1996-12-09 1998-06-18 Eska Implants Gmbh & Co. Artificial finger joint
NL1005234C2 (en) * 1997-02-10 1998-08-11 Novarticulate Bv Hip replacement and a method of placing such a hip replacement.
WO2002069852A1 (en) * 2001-03-01 2002-09-12 Mathys Medizinaltechnik Ag Joint prosthesis

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990116A (en) * 1974-10-17 1976-11-09 Fixel Irving E Pretensioned prosthetic device for skeletal joints
US4367562A (en) * 1980-06-19 1983-01-11 Georges Gauthier Joint prosthesis

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990116A (en) * 1974-10-17 1976-11-09 Fixel Irving E Pretensioned prosthetic device for skeletal joints
US4367562A (en) * 1980-06-19 1983-01-11 Georges Gauthier Joint prosthesis

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0524874A1 (en) * 1991-07-24 1993-01-27 Hades Joint prosthesis, especially trapezoid-metacarpal and digital joint
FR2679440A1 (en) * 1991-07-24 1993-01-29 Hades JOINT PROSTHESIS, IN PARTICULAR TRAPEZO-METACARPIAN AND DIGITAL.
WO1998025551A1 (en) * 1996-12-09 1998-06-18 Eska Implants Gmbh & Co. Artificial finger joint
NL1005234C2 (en) * 1997-02-10 1998-08-11 Novarticulate Bv Hip replacement and a method of placing such a hip replacement.
WO1998034567A1 (en) * 1997-02-10 1998-08-13 Novarticulate B.V. Hip prosthesis and method for fitting such hip prosthesis
US6375684B1 (en) 1997-02-10 2002-04-23 Novarticulate Holding, Ltd. Hip prosthesis and method for fitting such hip prosthesis
WO2002069852A1 (en) * 2001-03-01 2002-09-12 Mathys Medizinaltechnik Ag Joint prosthesis
US7244274B2 (en) 2001-03-01 2007-07-17 Mathys Medizinaltechnik Ag Joint prosthesis

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