FR2667785A1 - Femoral element for hip prosthesis - Google Patents

Femoral element for hip prosthesis Download PDF

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Publication number
FR2667785A1
FR2667785A1 FR9013065A FR9013065A FR2667785A1 FR 2667785 A1 FR2667785 A1 FR 2667785A1 FR 9013065 A FR9013065 A FR 9013065A FR 9013065 A FR9013065 A FR 9013065A FR 2667785 A1 FR2667785 A1 FR 2667785A1
Authority
FR
France
Prior art keywords
rod
element according
neck
plate
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.)
Pending
Application number
FR9013065A
Other languages
French (fr)
Inventor
Karren Dr Christian
Malingue Ericdr Beve Dr Bruno
Claisse Dr Patrice
Pondaven Dr Gerald
Dr Roblin
Mr Monfort Jean-Claude
Mr Cruchet Patrick
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.)
PROCOM
Original Assignee
PROCOM
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 PROCOM filed Critical PROCOM
Priority to FR9013065A priority Critical patent/FR2667785A1/en
Publication of FR2667785A1 publication Critical patent/FR2667785A1/en
Pending legal-status Critical Current

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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
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of shafts
    • A—HUMAN NECESSITIES
    • 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
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3672—Intermediate parts of shafts
    • A—HUMAN NECESSITIES
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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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    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • 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
    • A61F2/4607—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 hip femoral endoprostheses
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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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    • 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
    • A61F2002/30326—The prosthesis having different structural features at different locations within the same prosthesis differing in height or in length
    • A—HUMAN NECESSITIES
    • 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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    • 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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A61F2002/30616—Sets comprising a plurality of prosthetic parts of different sizes or orientations
    • 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
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    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
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    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures
    • A61F2310/00185—Ceramics or ceramic-like structures based on metal oxides
    • A61F2310/00239—Ceramics or ceramic-like structures based on metal oxides containing zirconia or zirconium oxide ZrO2

Abstract

The femoral element for a hip prosthesis, comprising a shaft (1) and a neck (2) which are joined by a plate (3), is distinguished by the fact that, in the area of its connection to the shaft (1), the plate (3) has, on the inner side and projecting from its sagittal plane, a collar (4) for reduced bearing on the calcar, the said collar (4) being connected to the neck area (2) by a diabolo shape (2a) designed to ensure an optimum clearance, while delaying any cam effect.

Description

Elément fémoral pour prothèse de hanche
Plus particulièrement, mais non limitativement, l'invention concerne les prothèses de hanche devant être fixées au moyen de ciment.Femoral component for hip prosthesis
More particularly, but not limited to, the invention relates to hip prostheses to be fixed by means of cement.

On rappelle de manière parfaitement connue qu'un élément fémoral d'une prothèse de hanche comprend une tige apte à être introduite dans le canal médullaire du fémur et un col latéralisé agencé pour recevoir directement ou d'une manière rapportée, une cupule destinée à coopérer avec la cavité cotyloide de l'os illiaque. It will be recalled in a perfectly known manner that a femoral element of a hip prosthesis comprises a rod capable of being introduced into the medullary canal of the femur and a lateralized neck arranged to receive directly or in a reported manner, a cup intended to cooperate with the cotyloid cavity of the iliac bone.

Selon l'invention, on a voulu améliorer les caractéristiques des différentes prothèses de hanche existantes pour résoudre certains problèmes, au niveau notamment de la fixation de l'élément prothétique, de manière à la rendre particulièrement sûre et efficace au moment de la pose et ulterieurement dans le temps. According to the invention, it was desired to improve the characteristics of the various existing hip prostheses in order to solve certain problems, in particular with regard to the fixing of the prosthetic element, so as to make it particularly safe and effective at the time of installation and subsequently. in time.

Comme indiqué, l'élément fémoral est du type de ceux comprenant une tige et un col réunis par une platine. As indicated, the femoral element is of the type of those comprising a rod and a neck joined by a plate.

Selon l'invention, pour résoudre le problème d'assurer une bonne fixation, l'élément prothétique est déterminé pour permettre un appui localisé sur ltéperon de
Merckel.According to the invention, to solve the problem of ensuring good fixation, the prosthetic element is determined to allow localized support on the spur of
Merckel.

Un tel problème est résolu en ce qu'au niveau de son raccordement avec la tige, la platine présente, du coté intérieur et en débordement de son plan sagittal, une collerette d'appui réduit sur le calcar, ladite collerette étant raccordée à l'ensemble du col par une forme en diabolo déterminée pour assurer un débattement optimum en retardant tout effet de came. Such a problem is solved in that at its connection with the rod, the plate has, on the inner side and overflows from its sagittal plane, a reduced support flange on the calcar, said flange being connected to the entire neck by a diabolo shape determined to ensure optimum travel by delaying any cam effect.

Avantageusement, la forme en diabolo du col permet d'assurer un débattement optimum de l'élément prothétique en évitant tout phénomène de luxation. Advantageously, the diabolo shape of the neck makes it possible to ensure optimum movement of the prosthetic element while avoiding any phenomenon of dislocation.

Suivant une autre caractéristique, la partie débordante de la collerette a une forme générale très sensiblement circulaire, se raccordant d'une manière évasée, par une section trapezodale, à un bord rectiligne situé du côté externe au niveau du raccordement de la tige et de la platine. According to another characteristic, the projecting part of the flange has a very substantially circular general shape, connecting in a flared manner, by a trapezoidal section, to a rectilinear edge situated on the external side at the connection of the rod and the platinum.

Un autre protblème que se propose de résoudre l'invention est d'obtenir une tension musculaire maximum. Another problem that the invention proposes to solve is to obtain maximum muscle tension.

Ce problème est résolu en ce que ltensembledu col est latéralisé d'une manière modérée, notamment selon un angle de l'ordre de 420 par rapport à lthorizontal.  This problem is solved in that the collar is lateralized in a moderate manner, in particular at an angle of the order of 420 relative to the horizontal.

Pour résoudre le problème posé d'assurer l'autocentrage de l'élément prothétique au moment de son impaction, ce dernier présente un point d' impaction formé au niveau de la forme en diabolo du col, très sensiblement à proximité de la partie de raccordement dudit col, avec l'extrémité proximale externe de la tige, ce point d'impaction étant orienté pour assurer l'autre centrage. To solve the problem of ensuring the self-centering of the prosthetic element at the time of its impaction, the latter has a point of impaction formed at the level of the diabolo shape of the neck, very substantially near the connection part. of said neck, with the external proximal end of the rod, this point of impaction being oriented to ensure the other centering.

Un autre poblème que se propose de résoudre l'invention est d'optimiser le contact de l'élément fémoral dans le canal médullaire au niveau notamment de la partie proximale, compte-tenu du problème posé d'une bonne fixation. Dans ce but, la tige présente, dans le plan sagittal et dans le plan frontal, une forme générale trapézoidale de section dégressive depuis la partie proximale jusqutà la partie distale. Another problem that the invention proposes to solve is to optimize the contact of the femoral element in the medullary canal, in particular at the level of the proximal part, taking into account the problem posed of good fixation. For this purpose, the rod has, in the sagittal plane and in the frontal plane, a general trapezoidal shape of tapering section from the proximal part to the distal part.

Un autre problème que se propose de résoudre l'invention est d'assurer une meilleure interface entre le ciment et l'élément fémoral, ainsi qu'une meilleure remontée et répartition du ciment au moment de l'impaction. Ce problème est résolu en ce que la tige présente, sur chacune de ses faces antérieure et postérieure, un rainurage longitudinal. Another problem which the invention proposes to solve is to ensure a better interface between the cement and the femoral element, as well as a better rise and distribution of the cement at the time of the impact. This problem is solved in that the rod has, on each of its anterior and posterior faces, a longitudinal grooving.

Avantageusement, le rainurage est formé par une rainure axiale qui s'étend depuis ltextrémité proximale de la tige jusqu a une certaine longueur de l'extrémité distale, et par des rainures formées dans la partie proximale de la tige, d'une manière parallèle à ladite rainure axiale. Advantageously, the grooving is formed by an axial groove which extends from the proximal end of the rod to a certain length of the distal end, and by grooves formed in the proximal part of the rod, in a manner parallel to said axial groove.

Dans une forme de réalisation préférée, la rainure axiale a une forme trapézoidale de section dégressive depuis la partie proximale jusqu a la partie distale, le fond des rainures étant concave. In a preferred embodiment, the axial groove has a trapezoidal shape of tapering section from the proximal part to the distal part, the bottom of the grooves being concave.

L'invention est exposée ci-après plus en détail à l'aide des dessins annexés, dans lesquels
La figure 1 est une vue de face de l'élément fémoral selon l'invention.The invention is set out below in more detail with the aid of the appended drawings, in which
Figure 1 is a front view of the femoral element according to the invention.

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

La figure 3 est vue en coupe transversale considérée selon la ligne 3-3 de la figure 1. Figure 3 is a cross-sectional view taken along line 3-3 of Figure 1.

Les figures 4, 5, 6 et 7 sont des vues en coupe transversale montrant le profil en section de la tige et considéré respectivement selon les lignes 4-4, 5-5, 6-6, 7-7 de la figure 2. Figures 4, 5, 6 and 7 are cross-sectional views showing the cross-sectional profile of the rod and considered respectively along lines 4-4, 5-5, 6-6, 7-7 of Figure 2.

On rappelle d'une manière connue que l'élément fémoral comprend une tige (1) destinée à être introduite dans le canal médullaire du fémur et un col latéralisé (2) réunis à ladite tige par une platine (3). L'extrémité du col est agencé pour recevoir directement ou d'une manière rapportée une tête hémisphérique (6) ou cupule (tracé traits mixtes figure 1), destinée à coopérer dans la cavité cotyloidienne de l'os illiaque. It is recalled in a known manner that the femoral element comprises a rod (1) intended to be introduced into the medullary canal of the femur and a lateralized neck (2) joined to said rod by a plate (3). The end of the neck is arranged to receive directly or in a reported manner a hemispherical head (6) or cup (line drawn in line in Figure 1), intended to cooperate in the acetabular cavity of the iliac bone.

Dans la forme de réalisation illustrée, 1' extrémité du col (2) est agencée sous forme d'un cône morse, notamment de 60. Plus particulièrement mais non limitativement, ce cône est dimensionné pour permettre l'utilisation de têtes hémisphériques de tailles réduites, notamment en oxyde de zirconium. In the illustrated embodiment, the end of the neck (2) is arranged in the form of a Morse cone, in particular of 60. More particularly but not limited to, this cone is dimensioned to allow the use of hemispherical heads of reduced sizes , especially zirconium oxide.

Selon une caractéristique de l'invention, au niveau de son raccordement avec la tige (1), la platine (3) présente une collerette (4). Cette collerette est formée du côté interne et en débordement du plan sagittal de la tige pour autoriser un appui réduit sur le calcar. According to a characteristic of the invention, at its connection with the rod (1), the plate (3) has a flange (4). This flange is formed on the internal side and projecting from the sagittal plane of the rod to allow reduced support on the calcar.

En outre, en ayant pour but d'assurer un débattement optimum de l'élément en retardant l'effet de came susceptible d'engendrer un phénomène de luxation, la collerette est raccordée à l'ensemble du col (2) par une forme en diabolo (2a). In addition, with the aim of ensuring optimum movement of the element by delaying the cam effect capable of causing a phenomenon of dislocation, the collar is connected to the entire neck (2) by a shape in diabolo (2a).

L'ensemble du col (2) est latéralisé d'une valeur réduite pour une meilleure tension musculaire. A titre indicatif, l'angle de latéralisation du col est de l'ordre de 420 par rapport à l'horizontal. The entire neck (2) is lateralized by a reduced value for better muscle tension. As an indication, the lateralization angle of the neck is of the order of 420 relative to the horizontal.

La partie débordante de la collerette d'appui (4) à une forme générale très sensiblement circulaire (4a) pour se raccorder d'une manière évasée par une section trapézoidale (4b) à un bord rectiligne (4c) situé du côté externe de l'élément prothétique au niveau du raccordement de la tige (1) et de la platine (3) (figure 3). A titre indicatif nullement limitatif, l'angle formé par les bords latéraux délimitant la section trapézoidale de la collerette, est compris entre 6 et 70 environ. The projecting part of the support flange (4) has a generally very substantially circular shape (4a) in order to be connected in a flared manner by a trapezoidal section (4b) to a straight edge (4c) situated on the external side of the prosthetic element at the connection of the rod (1) and the plate (3) (Figure 3). By way of non-limiting indication, the angle formed by the lateral edges delimiting the trapezoidal section of the collar, is between approximately 6 and 70.

Suivant une autre caractéristique, un point d'impaction (5) est formé au niveau de la forme en diabolo (2a) du col, très sensiblement à proximité de la partie de raccordement dudit col, avec l'extrémité proximale externe de la tige (figure 1). Ce point d'impaction (5) est orienté pour assurer l'auto-centrage. According to another characteristic, an impaction point (5) is formed at the level of the diabolo shape (2a) of the neck, very substantially near the connection part of said neck, with the external proximal end of the rod ( figure 1). This point of impact (5) is oriented to ensure self-centering.

Comme le montrent notamment les figures 4, 5, 6, 7, la tige (1) a, dans le plan sagittal et dans le plan frontal, une forme générale trapézoidale de section dégressive, depuis la partie proximale jusqu'à la partie distale, d'une part, et depuis le côté externe jusqu'au côté interne, d'autre part. Cette section permet d'optimiser le remplissage fémoral, notamment au niveau de la partie proximale. As shown in particular in FIGS. 4, 5, 6, 7, the rod (1) has, in the sagittal plane and in the frontal plane, a general trapezoidal shape of tapering section, from the proximal part to the distal part, on the one hand, and from the external side to the internal side, on the other hand. This section makes it possible to optimize the femoral filling, in particular at the level of the proximal part.

La tige (1) présente sur chacune de ses faces antérieure et postérieure, un rainurage longitudinal. Plus particulièrement, comme le montre la figure 1, ce rainurage comprend une rainure axiale (la) qui s'entend depuis l'extrémité proximale de la tige jusqu a une certaine distance (x) de l'extrémité distale de ladite tige. De part et d'autre de cette rainure axiale, et d'une manière parallèle, sont formées, d'autres rainures (lb). The rod (1) has on each of its front and rear faces, a longitudinal grooving. More particularly, as shown in FIG. 1, this grooving comprises an axial groove (la) which is understood from the proximal end of the rod up to a certain distance (x) from the distal end of said rod. On either side of this axial groove, and in a parallel manner, other grooves (lb) are formed.

Ces rainures (lb) sont formées seulement dans la partie proximale de la tige (1). A noter que la rainure axiale (la) a une forme trapézoidale de section dégressive depuis la partie proximale jusqu'à la partie distale. Le fond des rainures est concave. These grooves (lb) are formed only in the proximal part of the rod (1). Note that the axial groove (la) has a trapezoidal shape of tapering section from the proximal part to the distal part. The bottom of the grooves is concave.

Ce rainurage longitudinal a pour effet d'assurer une meilleure interface ciment-prothèse, ainsi qu'une meilleure répartition et remontée du ciment lors de l'impaction au niveau de la partie proximale de la tige. This longitudinal grooving has the effect of ensuring a better cement-prosthesis interface, as well as a better distribution and raising of the cement during the impaction at the level of the proximal part of the rod.

Bien éivdemment, l'élément fémoral selon l'invention peut être exécuté en tout matériau approprié et subir tout type de traitement de surface. En outre, l'élément fémoral est exécuté selon différentes tailles de progression anatomique. Obviously, the femoral element according to the invention can be made of any suitable material and undergo any type of surface treatment. In addition, the femoral element is performed according to different sizes of anatomical progression.

Les avantages ressortent bien de la description.  The advantages are apparent from the description.

Claims (1)

REVENDICATIONS -l- Elément fémoral pour prothèse de hanche comprenant une tige (l) et un col (2) réunis par une platine (3), caractérisé en ce qu'au niveau de son raccordement avec la tige (1), la platine (3) présente, du côté intérieur et en débordement de son plan sagittal, une collerette (4) d'appui réduit sur le calcar, ladite collerette (4) étant raccordée à l'ensemble du col (2) par une forme en diabolo (2a) déterminée pour assurer un débattement optimum en retardant tout effet de came. -l- Femoral element for hip prosthesis comprising a rod (l) and a neck (2) joined by a plate (3), characterized in that at its connection with the rod (1), the plate (3 ) has, on the inner side and projecting from its sagittal plane, a collar (4) of reduced support on the calcar, said collar (4) being connected to the entire neck (2) by a diabolo shape (2a ) determined to ensure optimum travel by delaying any cam effect. -2- Elément selon la revendication 1, caractérisé en ce que la partie débordante de la collerette (4) a une forme générale très sensiblement circulaire (4a), se raccordant d'une manière évasée, par une section trapezoidale (4b), à un bord rectiligne (4c) situé du côté externe au niveau du raccordement de la tige (l) et de la platine (3).-2- Element according to claim 1, characterized in that the projecting part of the flange (4) has a generally very substantially circular shape (4a), connecting in a flared manner, by a trapezoidal section (4b), a straight edge (4c) located on the outer side at the connection of the rod (l) and the plate (3). -3- Elément selon la revendication 1, caractérisé en ce que l'ensemble du col (2) est latéralisé selon un angle de sensiblement 420.-3- Element according to claim 1, characterized in that the entire neck (2) is lateralized at an angle of substantially 420. -4- Elément selon l'une quelconque des revendications l et 2, caractérisé en ce qu'il présente, un point d ' impaction (5) formé au niveau de la forme en diabolo (2a) du col, très sensiblement à proximité de la partie de raccordement dudit col, avec l'extrémité proximale externe de la tige, ce point d'impaction (5) étant orienté pour assurer l'auto-centrage.-4- Element according to any one of claims l and 2, characterized in that it has a point of impact (5) formed at the diabolo shape (2a) of the neck, very substantially near the connecting part of said neck, with the external proximal end of the rod, this point of impact (5) being oriented to ensure self-centering. -5- Elément selon la revendication 1, caractérisé en ce que la tige (l), présente, dans le plan sagittal et dans le plan frontal, une forme générale trapézoidale de section dégressive depuis la partie proximale jusqu a la partie distale.-5- Element according to claim 1, characterized in that the rod (l), has, in the sagittal plane and in the frontal plane, a general trapezoidal shape of tapering section from the proximal part to the distal part. -6- Elément selon la revendication l, caractérisé en ce que la tige (î) présente sur chacune de ses faces antérieure et postérieure un rainurage longitudinal.-6- Element according to claim l, characterized in that the rod (î) has on each of its front and rear faces a longitudinal grooving. -7- Elément selon la revendication 6, caractérisé en ce que le rainurage est formé par une rainure axiale (la) qui s'étend depuis l'extrémité proximale de la tige jusqu'à une certaine longueur de l'extrémité distale, et par des rainures (lb) formées dans la partie proximale de la tige, d'une manière parallèle à ladite rainure axiale (la). -7- Element according to claim 6, characterized in that the grooving is formed by an axial groove (la) which extends from the proximal end of the rod to a certain length from the distal end, and by grooves (lb) formed in the proximal part of the rod, in a parallel manner to said axial groove (la). -8- Elément selon la revendication 7, caractérisé en ce que la rainure axiale (la) a une forme trapézoidale de section dégressive depuis la partie proximale jusqu a la partie distale.-8- Element according to claim 7, characterized in that the axial groove (la) has a trapezoidal shape of tapering section from the proximal part to the distal part. -9- Elément selon l'une quelconque des revendications 6 à 8, caractérisé en ce que le fond des rainures (la) (lb) est concave -9- Element according to any one of claims 6 to 8, characterized in that the bottom of the grooves (la) (lb) is concave
FR9013065A 1990-10-16 1990-10-16 Femoral element for hip prosthesis Pending FR2667785A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9013065A FR2667785A1 (en) 1990-10-16 1990-10-16 Femoral element for hip prosthesis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9013065A FR2667785A1 (en) 1990-10-16 1990-10-16 Femoral element for hip prosthesis

Publications (1)

Publication Number Publication Date
FR2667785A1 true FR2667785A1 (en) 1992-04-17

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2125174A1 (en) * 1996-11-12 1999-02-16 Traiber S A Hip prosthesis
FR2767471A1 (en) * 1997-08-25 1999-02-26 Serf Sa Femoral shank of hip prosthesis
US6436148B1 (en) * 1998-08-14 2002-08-20 Depuy Orthopaedics, Inc. Implantable prosthesis with bone engaging ribs
EP1062923A3 (en) * 1999-06-23 2002-10-16 Plus Endoprothetik Ag Hip joint endoprostheses system
FR2887137A1 (en) * 2005-06-17 2006-12-22 C2M Implants Femoral rod for hip prosthesis, has proximal and distal parts with specific inclination with respect to rod`s plane of symmetry so that parts form specific angle, where proximal parts extend along specific height of shank
FR3020941A1 (en) * 2014-05-15 2015-11-20 T O FEMALE ROD WITH INTERNAL SUPPORT FLANGE

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8213101U1 (en) * 1982-08-26 Howmedica International, Inc. Zweigniederlassung Kiel, 2300 Kiel Femoral component of a hip joint prosthesis
FR2600527A1 (en) * 1986-06-24 1987-12-31 Setiey Louis Femoral part for hip prosthesis
FR2610822A1 (en) * 1987-02-18 1988-08-19 Vinceneux Jean Francois Hip prosthesis
FR2624371A1 (en) * 1987-12-11 1989-06-16 Biomecanique Integree Fastening block for a prosthetic patella
EP0359097A1 (en) * 1988-09-06 1990-03-21 Friedrich Baumann Femoral shaft for a hip prosthesis
FR2639821A1 (en) * 1988-12-07 1990-06-08 Implants Instr Ch Fab Femoral element for a hip prosthesis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8213101U1 (en) * 1982-08-26 Howmedica International, Inc. Zweigniederlassung Kiel, 2300 Kiel Femoral component of a hip joint prosthesis
FR2600527A1 (en) * 1986-06-24 1987-12-31 Setiey Louis Femoral part for hip prosthesis
FR2610822A1 (en) * 1987-02-18 1988-08-19 Vinceneux Jean Francois Hip prosthesis
FR2624371A1 (en) * 1987-12-11 1989-06-16 Biomecanique Integree Fastening block for a prosthetic patella
EP0359097A1 (en) * 1988-09-06 1990-03-21 Friedrich Baumann Femoral shaft for a hip prosthesis
FR2639821A1 (en) * 1988-12-07 1990-06-08 Implants Instr Ch Fab Femoral element for a hip prosthesis

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2125174A1 (en) * 1996-11-12 1999-02-16 Traiber S A Hip prosthesis
FR2767471A1 (en) * 1997-08-25 1999-02-26 Serf Sa Femoral shank of hip prosthesis
US6436148B1 (en) * 1998-08-14 2002-08-20 Depuy Orthopaedics, Inc. Implantable prosthesis with bone engaging ribs
EP1062923A3 (en) * 1999-06-23 2002-10-16 Plus Endoprothetik Ag Hip joint endoprostheses system
FR2887137A1 (en) * 2005-06-17 2006-12-22 C2M Implants Femoral rod for hip prosthesis, has proximal and distal parts with specific inclination with respect to rod`s plane of symmetry so that parts form specific angle, where proximal parts extend along specific height of shank
FR3020941A1 (en) * 2014-05-15 2015-11-20 T O FEMALE ROD WITH INTERNAL SUPPORT FLANGE

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