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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
rod
grooves
element according
surface treatment
whole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8816500A
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French (fr)
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FR2639821B1 (en
Inventor
Roland Istria
Alain Bottau
Rene Boudarel
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IMPLANTS INSTR CH FAB
Original Assignee
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
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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
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of shafts
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30158—Convex polygonal shapes trapezoidal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30321—The prosthesis having different structural features at different locations within the same prosthesis differing in roughness
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30322—The prosthesis having different structural features at different locations within the same prosthesis differing in surface structures
    • 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
    • A61F2/30767—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
    • A61F2002/3082—Grooves
    • A61F2002/30827—Plurality of grooves
    • A61F2002/30828—Plurality of grooves parallel
    • 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
    • A61F2/30767—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
    • A61F2002/30878—Special external or bone-contacting surface, 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
    • A61F2002/30879—Ribs
    • 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
    • A61F2/30767—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
    • A61F2002/30878—Special external or bone-contacting surface, 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
    • A61F2002/30891—Plurality of protrusions
    • A61F2002/30892—Plurality of protrusions parallel
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2002/30906—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth shot- sand- or grit-blasted
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
    • A61F2230/0026—Angular shapes trapezoidal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0025—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in roughness
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0026—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in surface structures

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The 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.

Description

Elément fémoral pour prothèse de hanche. Femoral component for 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 limited to, the self-locking femoral stems, intended 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. 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
- bonne stabilite de l'implant
- réhabilitation osseuse
- facilité de mise en prare
- implantation sur et efficace dans le temps
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 . pour résoudre ce tels problèmes.There are many types of implants known to replace the hip joint, in the case of an arthroplasty, for example. Generally, this type of implant comprises a rod which is introduced into the medullary medullary canal of the femur and a neck capable of receiving u1rectement cu in an added manner, a complementary cup of the cup type which cooperates with a ring positioned in the acetabular cavity of the iliac bone. Such a femoral element presents various arrangements capable of solving the following main problems
- good implant stability
- bone rehabilitation
- ease of preparation
- safe and efficient implementation over time
Taking these problems into account, the invention set itself the goal of producing a type of femoral implant for the hip joint which offers a new and advantageous solution. 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 remarkable in that the rod has a decreasing profile in the direction of its free end on the sagittal and frontal planes in house combi with a gradually decreasing trapezoidal cross section 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 to facilitate bone rehabilitation, the rod has in whole or in part and on each of its anterior and posterior faces, vertical unidirectional grooves 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 level of the anterior and posterior proximal surfaces of the rod.

Chaque cannelure est séparée par une rainure de même profondeur et de section transversale arrondie. Each groove is separated by a groove of the same depth and of 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 rehabilitation, the rod is subjected, in whole or in part, to a surface treatment capable of giving it 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 aim of facilitating the insertion of the rod into the medular canal of the femur, the surface treatment is carried out at the level of the proximal part of the rod presenting the grooves, 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
La figure 1 est une vue de face de la prothèse.The invention is set out below in more detail with reference to the accompanying drawings in which
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 taken 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 the object of the invention more concrete, we now write in a nonlimiting manner, with reference to the exemplary embodiments of the figures 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 element designated as a whole by (1), comprises in a 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 (IB) is intended to receive directly or in a deferred manner an additional 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 (1A) has a declining profile, in the direction of its free end, on the sagittal and frontal planes (FIG. 1).

Un tel profil est très sensiblement symétrique par rapport à l'axe médian vertical (XX'). Such a profile is very substantially symmetrical relative 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, its profile is combined with the cross section of the rod which is trapezoidal, being progressively decreasing, from its upper part to the level of the neck (IB), up to its free end (IB).

Comme le montre la figure 3, les aretes de la tige sont arrondies. As shown in Figure 3, the edges of the stem 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 (lA) has in whole or in part and 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)
Chaque cannelure (1D) est séparée par une rainure (lDl , de même profondeur et de section transversale arrondie
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.In the form of realLsatlon illustrated, the grooves (lD) are formed and limited at the level of the proximal anterior and posterior surfaces of the rod (lA)
Each groove (1D) is separated by a groove (lDl, of the same depth and of rounded cross section
According to another characteristic, and with the aim in particular of improving bone rehabilitation, the rod (lA) is subjected in whole or in part 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).  Preferably, this surface treatment is limited to the proximal part of the rod having the grooves (II).

Dans la forme de réalisation illustrée, l'autre partie de la tife (lE) est lisse. In the illustrated embodiment, the other part 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 advantageously results in that the smooth part (lE) facilitates the introduction into the medular canal of the bone, while the upper part of said rod, in combination with the proximal grooves (lD) and the rough surface state avoids any rotation of the rod 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 can be obtained by any suitable means such as sanding.

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

Claims (6)

REVENDICATIONS -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- Femoral element for hip prosthesis of the type of those comprising a rod and a neck offset laterally and angularly characterized in that the rod (1A) has a decreasing profile in the direction of its free end on the sagittal and frontal planes in combination with a gradually decreasing trapezoidal cross-section and with gathered edges. -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 rod (lA) has in whole or in part, and on each of its front and rear faces, vertical grooves (1D) unidirectional and parallel to the axis of symmetry . -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 anterior and posterior proximal surfaces of the rod. -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 groove (ID) is separated by a groove (lDl), of the same depth and of cross section arrcnd # e. -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- dement according to any one of claims 1 and 2, charac-erls in that the rod is subjected, in whole or in part, to a surface treatment capable of giving it a ruwcsity effect. -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 claims 3 and 5 sets, characterized in that the surface treatment is carried out at the proximal part of the rod having the grooves, the other part of the rod being smooth.
FR8816500A 1988-12-07 1988-12-07 FEMALE ELEMENT FOR HIP PROSTHESIS Expired - Lifetime FR2639821B1 (en)

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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
EP0554987A1 (en) * 1992-01-28 1993-08-11 Howmedica International Inc. Femoral component for use in a replacement hip joint
US5458651A (en) * 1992-01-28 1995-10-17 Howmedica International Femoral component for a hip prosthesis
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
EP0720839A1 (en) * 1995-01-03 1996-07-10 Tornier Sa Femoral shaft with twisted profile for hip prosthesis
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
EP0761183A3 (en) * 1995-08-25 1998-01-07 Bristol-Myers Squibb Company Prosthetic implant with fins
US5755811A (en) * 1995-08-25 1998-05-26 Zimmer, Inc. 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 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
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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