FR2639821A1 - Femoral element for a hip prosthesis - Google Patents

Femoral element for a hip prosthesis Download PDF

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Publication number
FR2639821A1
FR2639821A1 FR8816500A FR8816500A FR2639821A1 FR 2639821 A1 FR2639821 A1 FR 2639821A1 FR 8816500 A FR8816500 A FR 8816500A FR 8816500 A FR8816500 A FR 8816500A FR 2639821 A1 FR2639821 A1 FR 2639821A1
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FR
France
Prior art keywords
characterized
element according
stem
rod
shaft
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Granted
Application number
FR8816500A
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French (fr)
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FR2639821B1 (en
Inventor
Roland Istria
Alain Bottau
Rene Boudarel
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FABRIQUE IMPLANTS INSTRUMENTS CH
IMPLANTS INSTR CH FAB
Original Assignee
FABRIQUE IMPLANTS INSTRUMENTS CH
IMPLANTS INSTR CH FAB
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Priority to FR8816500A priority Critical patent/FR2639821B1/en
Publication of FR2639821A1 publication Critical patent/FR2639821A1/en
Application granted granted Critical
Publication of FR2639821B1 publication Critical patent/FR2639821B1/en
Anticipated expiration legal-status Critical
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/36Femoral heads ; Femoral endoprostheses
    • A61F2/3662Femoral shafts
    • A61F2/367Proximal or metaphyseal parts of shafts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/3011Cross-sections or two-dimensional shapes
    • A61F2002/30112Rounded shapes, e.g. with rounded corners
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/3011Cross-sections or two-dimensional shapes
    • A61F2002/30138Convex polygonal shapes
    • A61F2002/30158Convex polygonal shapes trapezoidal
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The 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
    • A61F2002/30317The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30321The prosthesis having different structural features at different locations within the same prosthesis differing in roughness
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The 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
    • A61F2002/30317The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30322The prosthesis having different structural features at different locations within the same prosthesis differing in surface structures
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/3082Grooves
    • A61F2002/30827Plurality of grooves
    • A61F2002/30828Plurality of grooves parallel
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30879Ribs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30891Plurality of protrusions
    • A61F2002/30892Plurality of protrusions parallel
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2002/30906Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth shot- sand- or grit-blasted
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004Rounded shapes, e.g. with rounded corners
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017Angular shapes
    • A61F2230/0026Angular shapes trapezoidal
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014Special 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
    • A61F2250/0025Special 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 roughness
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014Special 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
    • A61F2250/0026Special 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 surface structures

Abstract

The femoral element for a hip prosthesis according to the invention, of the type comprising a shaft and a neck offset laterally and angularly, is distinguished by the fact that a shaft 1A has a profile decreasing in the direction of its free end on the sagittal and frontal planes, in combination with a trapezoidal cross-section progressively decreasing and with rounded edges. <IMAGE>

Description

Elément fémoral pour prothèse de hanche. A femoral component for a hip prosthesis.

L'invention concerne plus particulièrement, mais non limitativement, les tiges fémorales auto-bloquantes, déstinées à être implantées sans ciment. The invention relates more particularly, but not exclusively, the femoral stems self-locking, déstinées to be implanted without cement.

On connait de nombreux types d'implants aptes à remplacer l'articulation de la hanche, dans le cas d'une arthroplastie, par exemple. There are many known types of suitable implants to replace the hip joint, in the case of a replacement, for example. Généralement, ce type d implant comprend une tige que l'on introduit dans le canal centro médullaird du fémur et un col apte à recevoir u1rectement cu d'une maniÈre rapportée, une pie ce complémentaire du type cupule qui coopère avec un anneau positionne dans la cavité cotyloïdienne de l'os iliaque.Un tel élément fémoral présente différents agenzements aptes à résoudre les principaux problèmes suivants Generally, this type of implant comprises a rod that is introduced into the centro médullaird canal of the femur and a neck adapted to receive u1rectement cu of an attached manner, a pie this type complementary to the cup which cooperates with a ring positioned in the acetabulum bone iliaque.Un such femoral element has different agenzements able to solve the following main problems
- bonne stabilite de l'implant - good stability of the implant
- réhabilitation osseuse - bone rehabilitation
- facilité de mise en prare - ease of PRARE
- implantation sur et efficace dans le temps - on implantation and effective over time
En tenant compte de ces problèmes, l'invention s'est fixée pour but de réaliser un type d'implant fémoral pour l'articulation de la hanche qui proprose une solution nouvelle et avantageuse . Taking into account these problems, the invention has set itself the aim of achieving a type of femoral implant to the hip joint which proprose a new and advantageous solution. pour résoudre ce tels problèmes. to solve this such problems.

D'une manière générale, l'invention est remarquable en ce que la tige présente un profil dégressif en direction de son extrémité libre sur les plans sagittal et frontal en combi maison avec une section transversale trapezoidale progressivement décroissante et à bords arrondis. In general, the invention is characterized in that the shaft has a tapering profile toward its free end on the sagittal and frontal planes in combi house with a trapezoidal cross-section decreasing progressively and with rounded edges.

Pour résoudre les problèmes posés d'une bonne stabilité et de faciliter la réhabilitation osseuse, la tige présente en totalité ou en partie et sur chacune de ses faces anté rieur et postérieure, des cannelures verticales unidirection- nelles et parallèles à l'axe de symétrie. To solve the problems of good stability and facilitate bone rehabilitation, present in whole or in part rod and on each of its faces ante laughing and posterior vertical splines throughbeam photoelectric tional and parallel to the axis of symmetry .

Avantageusement les cannelures sont formées au niveau des surfaces proximales antérieure et postérieure de la tige. Advantageously the grooves are formed at the anterior and posterior surfaces of the proximal stem.

Chaque cannelure est séparée par une rainure de même profondeur et de section transversale arrondie. Each spline is separated by a same groove depth and with a rounded cross-section.

Pour résoudre avantageusement le problème de faciliter la réhabilitation osseuse, la tige est soumise, en totalité ou en partie, à un traitement de surface apte à lui conférer un effet de rugosité. To advantageously solve the problem of facilitating bone restoration, the rod is subjected, in whole or in part, to a surface treatment adapted to impart a roughness effect.

Dans ce dernier cas, en ayant pour but de faciliter l'incroduction de la tige dans le canal médulaire du fémur, le traitement de surface est effectué au niveau de la partie proximale de la tige présentant les canelures, l'autre partie de la tige étant lisse. In the latter case, with the goal of facilitating incroduction of the stem into the medullary canal of the femur, the surface treatment is performed at the proximal portion of the rod having the splines, the other part of the rod being smooth.

L'invention est exposée, ci-après, plus en détail à l'aie des dessins annexés dans lesquels The invention is described hereinafter in greater detail have the accompanying drawings in which
La figure 1 est une vue de face de la prothèse. Figure 1 is a front view of the prosthesis.

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

Afin de rendre plus concret l'obJet de l'invention, on i cécrit maintenant d'une manière non limitative, en se référant aux exemples de réalisation des figures des dessins. In order to make more concrete the subject invention, i now cécrit a non-limiting manner, with reference to the embodiments of the drawings.

L'élément fémoral désigné dans son ensemble par (1), comprend d'une manière connue, une tige (lA) et un col (lB), déporté latéralement et angulairement. The femoral component generally designated by (1) comprises in known manner, a rod (lA) and a neck (lB), offset laterally and angularly.

Le col (lB) est destiné à recevoir directement ou d'une manière reportée une pièce complémentaire du type cupule. The neck (lB) is adapted to receive directly or in a manner delayed a complementary part of the cup type.

Selon l'invention, la tige (lA) présente un profil dégressif, en direction de son extrémité libre, sur les plans sagittal et frontal (figure 1). According to the invention, the rod (lA) has a decreasing profile in the direction of its free end on the sagittal and frontal planes (Figure 1).

Un tel profil est très sensiblement symétrique par rapport à l'axe médian vertical (XX'). Such a profile is substantially symmetrical with respect to the vertical median axis (XX ').

Avantageusement son profil est combiné avec la section transversale de la tige qui est trapézoïdale en étant progressivement décroissante, depuis sa partie supérieure au nivela du col (lB), Jusquà son extrémité libre (lc). Advantageously profile is combined with the cross section of the rod which is trapezoidal being gradually decreasing from its top to leveled the neck (lB), Up to its free end (lc).

Comme le montre la figure 3, les aretes de la tige sont arrondies. As shown in Figure 3, the edges of the rod are rounded.

Avantageusement, la tige (lA) présente en totalité ou en partie et sur chacune de ses faces antérieure et postérieure, des cannelures verticales (lD). Advantageously, the rod (Ia) present in whole or in part on each of its anterior and posterior faces, vertical grooves (lD).

Ces cannelures sont unidirectionnelles et parallèles à l'axe de symétrie (XX'). These grooves are unidirectional and parallel to the axis of symmetry (XX ').

Dans la forme de réalLsatlon illustrée, les cannelures (lD) sont formées et limitées au niveau des surfaces proximales antérieure et postérieure d la tige (lA) In the form of réalLsatlon illustrated, the grooves (lD) are formed and limited to the anterior and posterior surfaces of the proximal stem (IA)
Chaque cannelure (1D) est séparée par une rainure (lDl , de même profondeur et de section transversale arrondie Each flute (1D) is separated by a groove (LDL, the same depth and rounded cross-section
Suivant une autre caracteristique, et dans le but notamment d'améliorer la réhabilitation osseuse, la tige (lA), est soumise en totalité ou en partie à un traitement de surface, apte à lui conférer une certaine rugosité. According to another feature, and in order in particular to improve bone restoration, the rod (Ia), is subjected wholly or partially to a surface treatment, capable of giving it a certain roughness.

D'une manière préférée, ce traitement de surface est limité à la partie proximale de la tige présentant les cannelures (il). In a preferred manner, this surface treatment is limited to the proximal portion of the shaft having splines (II).

Dans la forme de réalisation illustrée, l'autre partie de la tife (lE) est lisse. In the illustrated embodiment, the other portion of the tife (lE) is smooth.

Il en résulte avantageusement, que la partie lisse (lE) facilite l'introduction dans le canal médulaire de l'os, tandis que la partie supérieure de ladite tige, en combinaison avec les cannelures proximales (lD) et l'état de surface rugeux évite toute rotation de la tige et facilite la réhabilitation osseuse. This results advantageously, that the smooth part (lE) facilitates the introduction into the medullary canal of the bone, while the upper portion of said shaft, in combination with the proximal splines (lD) and the state of surface rugeux prevents rotation of the stem and facilitates bone rehabilitation.

D'une manière connue, le traitement de surfaces peut être obtenu par tous moyens appropriés tel que sablage. In known manner, the surface treatment may be achieved by any suitable means such as sandblasting.

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

Claims (6)

    REVENDICATIONS
  1. -1- Elément fémoral pour prothèse de hanche du type de ceux comprenant une tige et un col déporté latéralement et angulairement caractérisé en ce que la tige (1A) présente un profil dégressif en direction de son extrémité libre sur les plans sagittal et frontal en combinaison avec une section transversale trapézoïdale progressivement décroissante et à bords ar froncis. -1- A femoral component of the hip prosthesis type for those comprising a stem and a neck offset laterally and angularly, characterized in that the rod (1A) has a decreasing profile toward its free end on the sagittal and frontal planes in combination with a gradually decreasing trapezoidal cross-section and edges ar ruffling.
  2. -2- Elément selon la revendication 1, caractérisé en ce que la tige (lA) présente en totalité ou en partie, et sur chacune de ses faces antérieure et postérieure, des cannelures verticales (1D) unidirectionnelles et parallèles à l'axe de symétrie. -2- element according to claim 1, characterized in that the shaft (Ia) present in whole or in part, and on each of its anterior and posterior faces, vertical grooves (1D) unidirectional and parallel to the axis of symmetry .
  3. -3- Elément selon la revendication 2, caractérisé en ce que les cannelures sont formées au niveau des surfaces proximales antérieuse et postérieure de la tige. -3- element according to claim 2, characterized in that the grooves are formed at the proximal antérieuse and posterior surfaces of the stem.
  4. -4- Elément selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chaque cannelure (ID) est séparée par une rainure (lDl), de même profondeur et de section transversale arrcnd#e. -4- element according to any one of claims 1 to 3, characterized in that each flute (ID) is separated by a groove (LDL), the same depth and cross-section arrcnd # e.
  5. -5- dément selon l'une quelconque des revendications 1 et 2, carac-érlsé en ce que la tige est soumise, en totalité ou en partie, à un traitement de surface apte à lui conférer un effet de ruwcsité. -5- demented according to any one of claims 1 and 2, charac-érlsé in that the rod is subjected, in whole or in part, to a surface treatment capable of imparting them a ruwcsité effect.
  6. -6- Elément selon les revendication 3 et 5 ensembles, caractérisé en ce que le traitement de surface est effectué au niveau de la partie proximale de tige présentant les cannelures, l'autre partie de la tige étant lisse. -6- element according to claim 3 and 5 together, characterized in that the surface treatment is performed at the proximal portion of stem having splines, the other portion of the shaft being smooth.
FR8816500A 1988-12-07 1988-12-07 Element for femoral hip prosthesis Expired - Lifetime FR2639821B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8816500A FR2639821B1 (en) 1988-12-07 1988-12-07 Element for femoral hip prosthesis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8816500A FR2639821B1 (en) 1988-12-07 1988-12-07 Element for femoral hip prosthesis

Publications (2)

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FR2639821A1 true FR2639821A1 (en) 1990-06-08
FR2639821B1 FR2639821B1 (en) 1997-10-03

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667785A1 (en) * 1990-10-16 1992-04-17 Procom Femoral element for hip prosthesis
FR2670667A1 (en) * 1990-12-21 1992-06-26 Birbeau Francois Femoral implant
EP0499480A1 (en) * 1991-02-15 1992-08-19 Aesculap Limited Hip implants
FR2681239A1 (en) * 1991-09-13 1993-03-19 Impact Shaft for total hip prosthesis
US5201770A (en) * 1991-01-02 1993-04-13 Sola Enrique P Femoral insert for total hip prosthesis
US5201767A (en) * 1991-07-15 1993-04-13 Johnson & Johnson Orthopaedics, Inc. Fluted-wedge osteal prosthetic component
FR2683450A1 (en) * 1991-11-13 1993-05-14 Impact Femoral stem for total hip prothesis
FR2686789A1 (en) * 1992-01-31 1993-08-06 Corum Ste Civile Hip prosthesis femoral stem
EP0554987A1 (en) * 1992-01-28 1993-08-11 Howmedica International Inc. Femoral component for use in a replacement hip joint
FR2687306A1 (en) * 1992-02-13 1993-08-20 Prolig Sa Femoral implant for hip prostheses
FR2723307A1 (en) * 1994-08-04 1996-02-09 Dore Jean Louis Femoral shank for hip prosthesis
FR2728160A1 (en) * 1994-12-14 1996-06-21 Cedior Hip prosthesis shank and medullary cavity file
FR2728781A1 (en) * 1995-01-03 1996-07-05 Tornier Sa Prosthesis shank, esp. for total hip prosthesis
EP0761183A2 (en) * 1995-08-25 1997-03-12 Bristol-Myers Squibb Company Prosthetic implant with fins
FR2751528A1 (en) * 1996-07-24 1998-01-30 Merck Biomaterial France Artificial hip joint prosthesis
FR2767471A1 (en) * 1997-08-25 1999-02-26 Serf Sa Femoral shank of hip prosthesis
WO2000002504A1 (en) * 1998-07-07 2000-01-20 Stratec Medical Ag Femur component for a hip endoprosthesis
WO2000059410A3 (en) * 1999-04-07 2001-04-26 Plus Endoprothetik Ag Flat shaft of a hip joint prosthesis for anchoring in the femur
FR2800600A1 (en) * 1999-11-10 2001-05-11 Bertrand Bouxin Femoral prosthesis shank has asymmetrical cross-section in metaphysis zone to wedge in place without cement
FR2868690A1 (en) * 2004-04-13 2005-10-14 Fedan N B N V Femoral component for hip prosthesis, has rod housed in femoral canal of patient, and having tapers along longitudinal and transversal axes, where rod has set of anti-rotation winglets making certain angle relative to longitudinal axis
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
US7455693B2 (en) 1999-04-13 2008-11-25 Smith & Nephew Orthopaedics, Ag Leaflike shaft of a hip-joint prosthesis for anchoring in the femur
EP1970029A3 (en) * 2007-03-09 2008-12-31 Orthosurgical SA Improvements to implant
US7494510B2 (en) 2000-04-13 2009-02-24 Smith And Nephew Orthopaedics Ag Leaflike shaft of a hip-joint prosthesis for anchoring in the femur
EP3016615A4 (en) * 2013-05-20 2017-04-12 Chitranjan S. Ranawat Femoral component for a hip prosthesis

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667785A1 (en) * 1990-10-16 1992-04-17 Procom Femoral element for hip prosthesis
FR2670667A1 (en) * 1990-12-21 1992-06-26 Birbeau Francois Femoral implant
US5201770A (en) * 1991-01-02 1993-04-13 Sola Enrique P Femoral insert for total hip prosthesis
EP0499480A1 (en) * 1991-02-15 1992-08-19 Aesculap Limited Hip implants
US5201767A (en) * 1991-07-15 1993-04-13 Johnson & Johnson Orthopaedics, Inc. Fluted-wedge osteal prosthetic component
FR2681239A1 (en) * 1991-09-13 1993-03-19 Impact Shaft for total hip prosthesis
FR2683450A1 (en) * 1991-11-13 1993-05-14 Impact Femoral stem for total hip prothesis
US5458651A (en) * 1992-01-28 1995-10-17 Howmedica International Femoral component for a hip prosthesis
EP0554987A1 (en) * 1992-01-28 1993-08-11 Howmedica International Inc. Femoral component for use in a replacement hip joint
FR2686789A1 (en) * 1992-01-31 1993-08-06 Corum Ste Civile Hip prosthesis femoral stem
FR2687306A1 (en) * 1992-02-13 1993-08-20 Prolig Sa Femoral implant for hip prostheses
FR2723307A1 (en) * 1994-08-04 1996-02-09 Dore Jean Louis Femoral shank for hip prosthesis
FR2728160A1 (en) * 1994-12-14 1996-06-21 Cedior Hip prosthesis shank and medullary cavity file
FR2728781A1 (en) * 1995-01-03 1996-07-05 Tornier Sa Prosthesis shank, esp. for total hip prosthesis
EP0720839A1 (en) * 1995-01-03 1996-07-10 Tornier S.A. Femoral shaft with twisted profile for hip prosthesis
US5755811A (en) * 1995-08-25 1998-05-26 Zimmer, Inc. Prosthetic implant with fins
EP0761183A3 (en) * 1995-08-25 1998-01-07 Bristol-Myers Squibb Company Prosthetic implant with fins
EP0761183A2 (en) * 1995-08-25 1997-03-12 Bristol-Myers Squibb Company Prosthetic implant with fins
FR2751528A1 (en) * 1996-07-24 1998-01-30 Merck Biomaterial France Artificial hip joint prosthesis
ES2121563A1 (en) * 1996-07-24 1998-11-16 Merck Biomaterial France Hip replacement.
FR2767471A1 (en) * 1997-08-25 1999-02-26 Serf Sa Femoral shank of hip prosthesis
WO2000002504A1 (en) * 1998-07-07 2000-01-20 Stratec Medical Ag Femur component for a hip endoprosthesis
WO2000059410A3 (en) * 1999-04-07 2001-04-26 Plus Endoprothetik Ag Flat shaft of a hip joint prosthesis for anchoring in the femur
US7497875B1 (en) 1999-04-07 2009-03-03 Smith & Nephew Orthopaedics Ag Flat shaft of a hip-joint prosthesis for anchoring in the femur
US7455693B2 (en) 1999-04-13 2008-11-25 Smith & Nephew Orthopaedics, Ag Leaflike shaft of a hip-joint prosthesis for anchoring in the femur
FR2800600A1 (en) * 1999-11-10 2001-05-11 Bertrand Bouxin Femoral prosthesis shank has asymmetrical cross-section in metaphysis zone to wedge in place without cement
US7494510B2 (en) 2000-04-13 2009-02-24 Smith And Nephew Orthopaedics Ag Leaflike shaft of a hip-joint prosthesis for anchoring in the femur
FR2868690A1 (en) * 2004-04-13 2005-10-14 Fedan N B N V Femoral component for hip prosthesis, has rod housed in femoral canal of patient, and having tapers along longitudinal and transversal axes, where rod has set of anti-rotation winglets making certain angle relative to longitudinal axis
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
EP1970029A3 (en) * 2007-03-09 2008-12-31 Orthosurgical SA Improvements to implant
EP3016615A4 (en) * 2013-05-20 2017-04-12 Chitranjan S. Ranawat Femoral component for a hip prosthesis

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