Abstract: The invention relates to a plate fixed between two bone parts by way of screws engaged in holes formed in the thickness of the plate. The plate comprises an angled member or rib which is inclined according to an angle of between about 30° and 60° in relation to the plane defined by the plate. The angled member or rib has a hole for engaging a screw and is located in the central part of the width, over a determined part of the length of the plate, so that the screw brings the two bone parts into a compressive position.

Abstract: In one embodiment, the present invention is a method of arthrodeses or osteosyntheses of a first bone part and a second bone part, including the steps of positioning a first fixation zone of an implant in the first bone part and a second fixation zone of the implant in the second bone part, both the first and second zones made of shape-memory material and, prior to positioning the bone parts, are in an inner position; and while the first fixation zone is within the first bone part and the second fixation zone is within the second bone part, fixating the respective first and second fixation zones within the respective bone parts through shape-memory action at body temperature.

Abstract: In one embodiment the present invention is an implant suitable for implantation in bone, comprising a median zone extending along a longitudinal axis between a first end and a second end, the first end having a face extending generally perpendicular to the axis to form an abutment having a width; and a first fixation zone extending from the first end and the abutment, the first fixation zone including a pair of tabs formed of shape-memory material extending from a base portion of the tabs adjacent the abutment such that the abutment extends further from the axis in a radial direction than the base portion of the tabs, wherein the pair of tabs are separable from one another by shape-memory action at body temperature.

Abstract: An intramedullar osteosynthetic device includes a body with an elongated shape and a flat cross-section having, in succession, from one of its ends, a first fixation zone cooperating with one of the bone parts to be immobilized, a median zone suitable for withstanding the shear and bending stresses, and a second fixation zone in the other bone part to be immobilized. Each of the fixation zones is made from a material suitable for enabling their deformation by thermal action (tepid memory) or mechanical action (superelasticity), to permit an introduction into the bone parts without pulpar approach, followed by a fixation in the bone parts, while avoiding any rotational movement, withstanding the tensile stresses, and maintaining a compressive force. At least one of the fixation zones has two tabs or fins and which are separable under the effect of the deformation.

Abstract: An assembly for reducing a fracture between an epiphysis and a diaphysis of a bone has a bone plate having a fan-shaped outer end formed with a plurality of outer holes and a bar-shaped inner end extending along a longitudinal axis from the outer end and formed with a plurality of inner holes. The plate further is formed on the bar-shaped inner end with a longitudinally extending throughgoing guide slot and between the guide slot and the outer holes with an aperture. A slide has a longitudinally extending leg with an inner end formed with a guide formation engaged into and longitudinally slidable along the guide slot and a crosspiece overlying the aperture and engaging the bone plate to both transverse sides of the aperture. The crosspiece is formed with a transversely elongated slide slot, and a slide screw engaged through the slide.

Abstract: The invention relates to an intramedullary implant for use between two bones or two bone fragments. The implant includes a single-piece body having a generally elongate shape and having, at each end, areas for anchoring to the bone portions in question, characterized in that one of said areas has a generally cylindrical shape while the other area has a flat cross-section.

Abstract: Intramedullary osteosynthesis device is capable of adopting a profiled H-shape in a closed introductory state in order to be easily implantable and an X-shape in an open implanted state for good fixation in the bone.

Abstract: A clamp has two arms with gripping jaws for supporting and positioning a superelastic osteosynthesis clip, The osteosynthesis clip comprising a web from which two flanges to be inserted into two portions of bone emerge. The clamp also has a component for preventing the jaws from being opened beyond a point at which the angle between the flanges of a clamp supported clip is greater than 90°; and a second component for preventing the jaws from being closed beyond a point at which the angle between the flanges and the web is substantially 90°.

Abstract: The invention relates to a self-tapping and self-boring osteosynthesis screw for compressive orthopaedic surgery, characterised in that, in the bone engagement regions, at both the distal portion (A1a) and at the proximal portion (A2a), the sum of the angles defining the outer taper of the shank (f) and the taper of the crest line of the screw thread pitch (P) is higher than 45°, and in that the leading portion (i.e. the most distal one) of each thread includes a plurality of cutting edges (AR) obtained by stock removal.

Abstract: The plate is fixed by screws (3) engaged in holes (1a) formed in the thickness of the plate which is designed in such a way as to ensure an adjustable compression effort, created by a screwing effect, which brings the two bone parts closer together. The design consists of at least one recess (1b) having a cross-section defining a plurality of separate areas (1b1), (1b2) and (1b3) that can co-operate with a screw (3) in order to generate a progressive translational movement of the screw (3) during the screwing action, corresponding to a movement of at least one of the bone parts, and causing the compression effort. Said plate (1) comprises a recess (1c) for the introduction of a spindle (4) on the side of one of the bone parts, and another recess (1d) for the introduction of a spindle (5) on the side of the other bone part, one of said recesses (1c) consisting of a circular hole having a diameter which essentially corresponds to that of the spindle (4), and the other recess (1d) consisting of an oblong hole.

Abstract: An orthopaedic implant (2) used in arthroplasty of the fingers comprises a first element (3) for a proximal phalanx (4) and a second element (5) for an adjacent distal phalanx (6), each element having a respective stem (7, 8) for implantation in the bone and an interphalangeal articulation head (9, 10), the head (9) of the first element having a biconvex surface (11) of articulation, with a central valley (12), and the head (10) of the second element having a biconcave surface (13) of articulation designed to cooperate with said convex surface and comprising a central crest (14). At rest, the surfaces (11, 13) are congruent in the frontal plane of the articulation in the area of the condyles and non-congruent in the sagittal plane.

Abstract: An assembly for reducing a fracture between an epiphysis and a diaphysis of a bone has a bone plate having a fan-shaped outer end formed with a plurality of outer holes and a bar-shaped inner end extending along a longitudinal axis from the outer end and formed with a plurality of inner holes. The plate further is formed on the bar-shaped inner end with a longitudinally extending throughgoing guide slot and between the guide slot and the outer holes with an aperture. A slide has a longitudinally extending leg with an inner end formed with a guide formation engaged into and longitudinally slidable along the guide slot and a crosspiece overlying the aperture and engaging the bone plate to both transverse sides of the aperture. The crosspiece is formed with a transversely elongated slide slot, and a slide screw engaged through the slide.

Abstract: A bone plate for a fracture between an epiphysis and a diaphysis has an outer part unitarily formed with a fan-shaped outer end having a plurality of outer holes and an inner end extending from the outer end. A bar-shaped inner part has an outer end juxtaposed with the inner end of the outer part and formed inward of its outer end with a plurality of inner holes. A pivot is provided between the inner end of the outer part and the outer end of the inner part. Formations juxtaposed with the pivot on the inner end of the outer part and on the outer end of the inner part are lockable together in each of a plurality of angularly offset fixed positions of the inner and outer parts. When the formations are pressed together the inner and outer parts are locked angularly relative to each other.

Abstract: The invention relates to a resorptive intramedullary implant between two bones or two bone fragments. The implant includes a single-piece body (1) having a generally elongate shape and having, at each end, areas for anchoring to the bone portions in question, characterised in that one of said areas (A1) has a cylindrical cross-section while the other area (A2) has a flat cross-section.

Abstract: An intramedullary anchoring stem (7) for an orthopaedic implant head. The stem is in one piece, is made of biocompatible material and is movable in relation to the head, with which it has connecting means (16), and it has a truncated or substantially truncated peg shape (11) at least partially recessed (21) longitudinally, and parallel or substantially parallel to the dorso-palmar plane (22).

Abstract: The invention relates to a plate (1) fixed between two bone parts by means of screws engaged in holes (1b) formed in the thickness of said plate. The plate (1) comprises a rib which is inclined according to an angle of between 30° and 60° in relation to the plane defined by the plate and has a hole (1a1) for engaging a screw (2). Said rib is located in the central part of the width, over a determined part of the length of the plate so that the screw (2) brings the two bone parts into the compressive position.

Abstract: Intramedullary osteosynthesis device is capable of adopting a profiled H-shape in a closed introductory state in order to be easily implantable and an X-shape in an open implanted state for good fixation in the bone.

Abstract: A clamp has two arms with gripping jaws for supporting and positioning a superelastic osteosynthesis clip The osteosynthesis clip comprising a web from which two flanges to be inserted into two portions of bone emerge. The clamp also has component for preventing the jaws from being opened beyond a point at which the angle between the flanges of a clamp supported clip is greater than 90°; and a second component for preventing the jaws from being closed beyond a point at which the angle between the flanges and the web is substantially 90°.

Abstract: An intramedullar osteosynthetic device includes a body with an elongated shape and a flat cross-section having, in succession, from one of its ends, a first fixation zone cooperating with one of the bone parts to be immobilised, a median zone suitable for withstanding the shear and bending stresses, and a second fixation zone in the other bone part to be immobilised. Each of the fixation zones is made from a material suitable for enabling their deformation by thermal action (tepid memory) or mechanical action (superelasticity), to permit an introduction into the bone parts without pulpar approach, followed by a fixation in the bone parts, while avoiding any rotational movement, withstanding the tensile stresses, and maintaining a compressive force. At least one of the fixation zones has two tabs or fins and which are separable under the effect of the deformation.

Abstract: A middle prosthesis including an element comprising an arched section defining first and second branches which are spaced from one another and are movable relative to one another by the elasticity of the element and wherein the element is formed of a superelastic metal alloy.