FR2733412A1 - Metatarsal-phalangeal prosthetic implant - Google Patents

Metatarsal-phalangeal prosthetic implant Download PDF

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Publication number
FR2733412A1
FR2733412A1 FR9505082A FR9505082A FR2733412A1 FR 2733412 A1 FR2733412 A1 FR 2733412A1 FR 9505082 A FR9505082 A FR 9505082A FR 9505082 A FR9505082 A FR 9505082A FR 2733412 A1 FR2733412 A1 FR 2733412A1
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France
Prior art keywords
prosthetic implant
prosthesis
big toe
metatarsophalangeal joint
metatarsal
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Granted
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FR9505082A
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French (fr)
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FR2733412B1 (en
Inventor
De Bat Jean Michel Huc
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OMNIBUS NV
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OMNIBUS NV
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    • 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
    • A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4225—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • 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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    • A61F2/00—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
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    • A61F2002/30199—Three-dimensional shapes
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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
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    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • 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
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    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
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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
    • 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
    • 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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • 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
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • 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
    • A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
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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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    • A61F2002/30878—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
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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
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    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • A—HUMAN NECESSITIES
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    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
    • A—HUMAN NECESSITIES
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    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
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    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00389—The prosthesis being coated or covered with a particular material
    • A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
    • A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite

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  • 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 prosthesis has a phalangeal section (1) formed as a screw (3) covered by a detachable plate (6) threaded into the phalanx. A metatarsal prosthesis (2) is shaped on its left surface and covers an osseous area of the metatarsal. The prostheses have there surfaces shaped to allow mutual contact. The surface of the phalangeal section can be totally planar. the metatarsal prosthesis can be in two parts including a contact zone (8) and a retaining section between the external surface and the lateral wall of the metatarsus.

Description

La présente invention est relative à un implant prothétique de l'articulation métatarsophalangienne du gros orteil. The present invention relates to a prosthetic implant of the metatarsophalangeal joint of the big toe.

On sait que de tels implants sont utilisés chez les patients atteints d'hallux rigidus ou d'arthrite rhumatoïde afin de reconstituer leur articulation, en lui redonnant de la mobilité sans présence de douleurs
Les implants connus comportent généralement un élément prothétique solidarisé à la phalange. La partie métatarsienne en regard doit être travaillée par le chirurgien pour s'adapter à la géométrie de l'implant prothétique utilisé.We know that such implants are used in patients with hallux rigidus or rheumatoid arthritis in order to restore their joint, giving it mobility without pain
Known implants generally include a prosthetic element secured to the phalanx. The metatarsal part opposite must be worked by the surgeon to adapt to the geometry of the prosthetic implant used.

Avec d'autres implants, le chirurgien dispose de deux pièces, I'une étant destinée à être enfoncée dans la phalange, I'autre devant être adaptée sur le métatarse. II s'agit souvent d'éléments en forme de plateau, dont l'application et la fixation définitives des surfaces de contact sur les parties osseuses nécessitent des interventions importantes et parfois des endommagements irréversibles de la phalange etlou du métatarse. Pour obtenir une fixation satisfaisante des éléments prothétiques, le praticien doit rechercher des zones saines, ce qui l'oblige parfois à surdimensionner les prothèses ou à implanter ces dernières dans des zones plus éloignées de l'articulation à reconstituer.With other implants, the surgeon has two parts, one intended to be inserted into the phalanx, the other to be fitted on the metatarsus. These are often plateau-shaped elements, the application and final fixation of the contact surfaces on the bone parts require significant intervention and sometimes irreversible damage to the phalanx and / or the metatarsus. To obtain a satisfactory fixation of the prosthetic elements, the practitioner must seek healthy zones, which sometimes obliges him to oversize the prostheses or to implant them in zones more distant from the joint to be reconstructed.

En outre, I'ensemble de ces dispositifs antérieurs se détériore relativement rapidement de par l'usure des pièces en contact due aux frottements, nécessitant leur Remplacement à plus ou moins long terme. Ces nouvelles interventions sont bien évidemment dommageables aux parties osseuses à traiter, et constituent une souffrance supplémentaire pour le patient. In addition, all of these prior devices deteriorate relatively rapidly due to wear of the parts in contact due to friction, requiring their replacement in the more or less long term. These new interventions are obviously damaging to the bone parts to be treated, and constitute additional suffering for the patient.

La présente invention vise donc à pallier ces inconvénients en proposant un nouveau type d'implant prothétique de l'articulation métatarsophalangienne, dont seulement l'un des éléments doit être remplacé en cas d'usure, ce qui limite considérablement l'ampleur de l'intervention. The present invention therefore aims to overcome these drawbacks by proposing a new type of prosthetic implant of the metatarsophalangeal joint, of which only one of the elements must be replaced in the event of wear, which considerably limits the extent of the intervention.

A cet effet, I'implant prothétique de l'articulation métatarsophalangienne du gros orteil, se caractérise en ce qu'il comporte: - une prothèse phalangienne, formée d'un piton, recouvert par un plateau démontable, I'ensemble étant enfoncé ou vissé dans la phalange de l'orteil; - une prothèse métatarsienne, conformée en une surface gauche, ladite prothèse métatarsienne coiffant une partie distale du métatarse; ces prothèses ayant leur surface externe respective en contact de manière à assurer l'articulation. For this purpose, the prosthetic implant of the metatarsophalangeal joint of the big toe, is characterized in that it comprises: - a phalangeal prosthesis, formed of a piton, covered by a removable plate, the assembly being pressed in or screwed in the phalanx of the toe; - a metatarsal prosthesis, shaped into a left surface, said metatarsal prosthesis covering a distal part of the metatarsus; these prostheses having their respective external surface in contact so as to ensure articulation.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-après, en référence aux dessins annexés qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif. Other characteristics and advantages of the present invention will emerge from the description given below, with reference to the appended drawings which illustrate an embodiment thereof devoid of any limiting character.

Sur les figures:
- la figure 1 est une vue en coupe et en élévation frontale d'un implant prothétique de l'articulation métatarsophalangienne selon l'invention;
- la figure 2 est vue en coupe et de dessus de la figure 1.In the figures:
- Figure 1 is a sectional view in front elevation of a prosthetic implant of the metatarsophalangeal joint according to the invention;
- Figure 2 is a sectional view from above of Figure 1.

Selon un mode préféré de réalisation de l'implant prothétique de l'articulation métatarsophalangienne du gros orteil, il comporte deux parties une prothèse phalangienne 1 et une prothèse métatarsienne 2. According to a preferred embodiment of the prosthetic implant of the metatarsophalangeal joint of the big toe, it has two parts, a phalangeal prosthesis 1 and a metatarsal prosthesis 2.

La prothèse phalangienne 1 est constituée de deux éléments 3, 4 : une partie 3, en forme de piton notamment tronconique ou cylindrique, enfoncée ou vissée dans la phalange du gros orteil, et réalisée dans un matériau biocompatible. Ce piton, dans sa zone la plus large, est coiffé par une embase 5 de manière à recevoir l'autre partie de la prothèse phalangienne constituée par un plateau 6. Au droit de ce plateau et sur la face dirigée vers la phalange, on dispose sur cette zone une couche d'hydroxyapatite pour faciliter le contact entre cet élément et l'os de la phalange. The phalangeal prosthesis 1 is made up of two elements 3, 4: a part 3, in the shape of a piton, in particular frustoconical or cylindrical, pressed or screwed into the phalanx of the big toe, and made of a biocompatible material. This piton, in its widest area, is capped by a base 5 so as to receive the other part of the phalangeal prosthesis constituted by a plate 6. At the right of this plate and on the face directed towards the phalanx, there are on this area a layer of hydroxyapatite to facilitate contact between this element and the phalanx bone.

Cette deuxième partie constitue un plateau 6, avantageusement réalisé en matière plastique, notamment du polyéthylène, cette partie est rendue solidaire de l'élément tronconique par des moyens connus (sertissage, rivetage, assemblage du type tenon mortaise...). This second part constitutes a plate 6, advantageously made of plastic, in particular polyethylene, this part is made integral with the frustoconical element by known means (crimping, riveting, assembly of the mortise tenon type, etc.).

La face externe du plateau 6 est plane sur toute sa surface selon un premier mode de réalisation, ou selon un deuxième mode de réalisation présente une zone concave. The external face of the plate 6 is planar over its entire surface according to a first embodiment, or according to a second embodiment has a concave zone.

Par ailleurs, en fonction des applications visées et de la morphologie du patient, on adaptera l'épaisseur du plateau 6. Furthermore, depending on the intended applications and the patient's morphology, the thickness of the plate 6 will be adapted.

La prothèse métatarsienne 2 comme son nom l'indique est destinée à être fixée dans le métatarse en regard de l'orteil. Cet élément est composé d'une partie métallique, notamment en titane. Cette partie dont le profil s'étend sous la forme d'une portion d'enveloppe hémisphérique, comprend principalement deux zones 8, 9
- une zone de contact 8 entre le plateau 6 de la prothèse phalangienne et la surface externe de ladite enveloppe couvrant la tête du métatarse;
- une zone d'accrochage 9 entre ladite enveloppe et la paroi latérale du métatarse.The metatarsal prosthesis 2, as its name suggests, is intended to be fixed in the metatarsus opposite the toe. This element is composed of a metal part, in particular made of titanium. This part, the profile of which extends in the form of a portion of hemispherical envelope, mainly comprises two zones 8, 9
a contact zone 8 between the plate 6 of the phalangeal prosthesis and the external surface of said envelope covering the head of the metatarsus;
- An attachment zone 9 between said envelope and the side wall of the metatarsus.

Ainsi, pour permettre la fixation de la prothèse métartasienne sur l'os, on prévoit de disposer d'une part, dans une zone en dehors de la zone de contact 8, préférentiellement sur la paroi latérale 10 de ladite enveloppe, un orifice 11, éventuellement pourvu d'un lamage, pour le passage d'un organe de solidarisation 12 (vis, rivet...) et d'autre part, à l'intérieur de l'enveloppe hémisphérique et dans une zone située sensiblement au droit de la zone de contact 8, deux ergots 13 faisant saillie. Thus, to allow the metartasian prosthesis to be fixed on the bone, provision is made to have, on the one hand, in an area outside the contact area 8, preferably on the side wall 10 of said envelope, an orifice 11, optionally provided with a counterbore, for the passage of a fastening member 12 (screw, rivet, etc.) and on the other hand, inside the hemispherical envelope and in an area located substantially at the right of the contact zone 8, two lugs 13 projecting.

Selon une autre caractéristique avantageuse, ladite enveloppe est pourvue intérieurement, sur la face devant être positionnée en regard du métatarse, on dispose sur cette zone une couche d'hydroxyapatite pour favoriser la fixation et éviter tout glissement. According to another advantageous characteristic, said envelope is provided internally, on the face to be positioned opposite the metatarsus, there is a layer of hydroxyapatite on this area to promote fixation and prevent slipping.

L'invention telle que décrite précédemment offre de multiples avantages:
- elle assure une excellente mobilité de l'articulation;
- le plateau de la prothèse phalangienne peut être changé, en cas d'usure, sans nécessiter le remplacement des autres éléments;
- l'épaisseur variable du plateau réalise une meilleure adaptation selon le patient à traiter, étant aisément adaptable;
- l'implantation de la prothèse phalangienne et de la prothèse métatarsienne ne nécessite pas de multiples interventions destructrices sur les parties osseuses;
- ces prothèses peuvent être aisément adaptées, même sur des patients souffrant d'hallux rigidus, ou d'arthrite rhumatoïde sérieuse.The invention as described above offers multiple advantages:
- it ensures excellent mobility of the joint;
- the plate of the phalangeal prosthesis can be changed, in the event of wear, without requiring the replacement of the other elements;
- the variable thickness of the plate achieves better adaptation according to the patient to be treated, being easily adaptable;
- the implantation of the phalangeal prosthesis and the metatarsal prosthesis does not require multiple destructive interventions on the bone parts;
- these prostheses can be easily adapted, even on patients suffering from hallux rigidus, or from serious rheumatoid arthritis.

II demeure bien entendu que la présente invention n'est pas limitée aux exemples de réalisation décrits et représentés ci-dessus, mais qu'elle en englobe toutes les variantes.  It remains to be understood that the present invention is not limited to the exemplary embodiments described and shown above, but that it encompasses all variants thereof.

Claims (7)

REVENDICATIONS 1 - Implant prothétique de l'articulation métatarsophalangienne du gros orteil, caractérisé en ce qu'il comporte: 1 - Prosthetic implant of the metatarsophalangeal joint of the big toe, characterized in that it comprises: - une prothèse phalangienne (1), formée d'un piton (3), recouvert par un plateau (6) démontable, I'ensemble étant enfoncé ou vissé dans la phalange de l'orteil; - a phalangeal prosthesis (1), formed by a piton (3), covered by a removable plate (6), the whole being pressed or screwed into the phalanx of the toe; - une prothèse métatarsienne (2), conformée en une surface gauche, ladite prothèse métatarsienne coiffant une zone osseuse du métatarse; ces prothèses ayant leur surface externe respective en contact de manière à assurer l'articulation. - a metatarsal prosthesis (2), shaped into a left surface, said metatarsal prosthesis covering a bony area of the metatarsus; these prostheses having their respective external surface in contact so as to ensure articulation. 2 - Implant prothétique de l'articulation métatarsophalangienne du gros orteil selon la revendication 1, caractérisé en ce que la face externe du plateau (6) est plane sur toute sa surface. 2 - Prosthetic implant of the metatarsophalangeal joint of the big toe according to claim 1, characterized in that the external face of the plate (6) is flat over its entire surface. 3 - Implant prothétique de l'articulation métatarsophalangienne du gros orteil selon la revendication 1, caractérisé en ce que la face externe du plateau (6) présente une zone concave. 3 - Prosthetic implant of the metatarsophalangeal joint of the big toe according to claim 1, characterized in that the external face of the plate (6) has a concave zone. 4 - Implant prothétique de l'articulation métatarsophalangienne du gros orteil selon l'une quelconque des revendications précédentes, caractérisé en ce que la prothèse métatarsienne (2) comprend principalement deux zones (8, 9): 4 - Prosthetic implant of the metatarsophalangeal joint of the big toe according to any one of the preceding claims, characterized in that the metatarsal prosthesis (2) mainly comprises two zones (8, 9): - une zone de contact (8) entre le plateau (6) de la prothèse phalangienne (1) et la surface externe de ladite enveloppe couvrant la tête du métatarse - a contact zone (8) between the plate (6) of the phalangeal prosthesis (1) and the external surface of said envelope covering the head of the metatarsus - une zone d'accrochage (9) entre ladite enveloppe et la paroi latérale (10) du métatarse. - an attachment zone (9) between said envelope and the side wall (10) of the metatarsus. 5 - Implant prothétique de l'articulation métatarsophalangienne du gros orteil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'on prévoit de disposer d'une part, dans une zone en dehors de la zone de contact (8), préférentiellement sur la paroi latérale (10) de ladite enveloppe, un orifice (11), éventuellement pourvu d'un lamage, pour le passage d'un organe de solidarisation (12) et d'autre part, à l'intérieur de l'enveloppe hémisphérique et dans une zone située sensiblement au droit de la zone de contact (8), deux ergots (13) faisant saillie. 5 - Prosthetic implant of the metatarsophalangeal joint of the big toe according to any one of the preceding claims, characterized in that provision is made to have, on the one hand, in an area outside the contact area (8), preferably on the side wall (10) of said envelope, an orifice (11), optionally provided with a counterbore, for the passage of a fastening member (12) and on the other hand, inside the envelope hemispherical and in an area located substantially in line with the contact area (8), two lugs (13) projecting. 6 - Implant prothétique de l'articulation métatarsophalangienne du gros orteil selon la revendication 1, caractérisé en ce qu'on dispose entre l'embase (5) du piton et sur la face en regard de la phalange, une couche d'hydroxyapatite.  6 - Prosthetic implant of the metatarsophalangeal joint of the big toe according to claim 1, characterized in that there is between the base (5) of the piton and on the opposite face of the phalanx, a layer of hydroxyapatite. 7 - Implant prothétique de l'articulation métatarsophalangienne du gros orteil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'enveloppe est pourvue intérieurement, sur la face devant être positionnée en regard du métatarse, d'une couche d'hydroxyapatite.  7 - Prosthetic implant of the metatarsophalangeal joint of the big toe according to any one of the preceding claims, characterized in that the envelope is provided internally, on the face to be positioned facing the metatarsus, with a layer of hydroxyapatite .
FR9505082A 1995-04-27 1995-04-27 PROSTHETIC IMPLANT OF THE METATARSOPHALANGIAN JOINT Expired - Fee Related FR2733412B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787013A1 (en) * 1998-12-14 2000-06-16 Depuy France TOTAL METATARSO-PHALANGIAN CUT PROSTHESIS
FR2803509A1 (en) * 2000-01-12 2001-07-13 Patrice Diebold Metatarsal-phalangeal prosthesis comprises articulated metatarsal and phalangeal components with joint allowing rotation
US7291175B1 (en) 2005-01-06 2007-11-06 David J Gordon Metatarsal phalangeal implant with locking screw
WO2007148220A2 (en) * 2006-06-23 2007-12-27 Implants International Limited Articulation prosthesis for small bones, in particular for phalangeal, metacarpo-phalangeal or metatarso-phalangeal articulations
EP2277476A1 (en) * 2009-07-23 2011-01-26 Textile Hi-Tec (T.H.T.) Implantable interposition device for rebuilding a phalangeal or metacarpophalangeal joint and surgical assembly including such a device
EP2919714A4 (en) * 2012-11-16 2016-08-10 Swemac Innovation Ab Prosthesis member of a joint prosthesis for a thumb joint and joint prosthesis

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275871A1 (en) * 1987-01-06 1988-07-27 New York Society for the Relief of the Ruptured and Crippled Metatarsal-phalangeal prosthesis
WO1993000053A1 (en) * 1991-06-25 1993-01-07 Orthopaedic Biosystems Limited Non-constrained total joint system
EP0639360A1 (en) * 1993-05-28 1995-02-22 Laurent Lafosse Finger articulation prosthesis with one dish shaped element
FR2709948A1 (en) * 1993-09-16 1995-03-24 Saragaglia Dominique Total metatarso-phalangeal prosthesis for resurfacing without cement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275871A1 (en) * 1987-01-06 1988-07-27 New York Society for the Relief of the Ruptured and Crippled Metatarsal-phalangeal prosthesis
WO1993000053A1 (en) * 1991-06-25 1993-01-07 Orthopaedic Biosystems Limited Non-constrained total joint system
EP0639360A1 (en) * 1993-05-28 1995-02-22 Laurent Lafosse Finger articulation prosthesis with one dish shaped element
FR2709948A1 (en) * 1993-09-16 1995-03-24 Saragaglia Dominique Total metatarso-phalangeal prosthesis for resurfacing without cement

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787013A1 (en) * 1998-12-14 2000-06-16 Depuy France TOTAL METATARSO-PHALANGIAN CUT PROSTHESIS
WO2000035381A1 (en) * 1998-12-14 2000-06-22 Depuy France Total metatarsophalangeal prosthesis with section plane
FR2803509A1 (en) * 2000-01-12 2001-07-13 Patrice Diebold Metatarsal-phalangeal prosthesis comprises articulated metatarsal and phalangeal components with joint allowing rotation
US7291175B1 (en) 2005-01-06 2007-11-06 David J Gordon Metatarsal phalangeal implant with locking screw
WO2007148220A2 (en) * 2006-06-23 2007-12-27 Implants International Limited Articulation prosthesis for small bones, in particular for phalangeal, metacarpo-phalangeal or metatarso-phalangeal articulations
WO2007148220A3 (en) * 2006-06-23 2008-02-28 Implants Internat Ltd Articulation prosthesis for small bones, in particular for phalangeal, metacarpo-phalangeal or metatarso-phalangeal articulations
FR2903883A1 (en) * 2006-07-18 2008-01-25 Implants Internal Ltd Joint prosthesis for small bones, particularly for phalangeal, metacarpophalangeal and metatarso-phalangeal joints, has assembly shaft that is lockingly engaged to transverse rod which is received in transverse hole through slot
EP2277476A1 (en) * 2009-07-23 2011-01-26 Textile Hi-Tec (T.H.T.) Implantable interposition device for rebuilding a phalangeal or metacarpophalangeal joint and surgical assembly including such a device
FR2948281A1 (en) * 2009-07-23 2011-01-28 Textile Hi Tec T H T IMPLANTABLE INTERPOSITION DEVICE FOR THE REFECTION OF A PHALANGEAL OR METACARPOPHALANGIAL ARTICULATION AND SURGICAL ASSEMBLY COMPRISING SUCH A DEVICE
EP2919714A4 (en) * 2012-11-16 2016-08-10 Swemac Innovation Ab Prosthesis member of a joint prosthesis for a thumb joint and joint prosthesis

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