Abstract: A skeletal fixator including implant screws, a support angularly indexed with respect to a head of the implant screws and which comprises a cavity provided with a screw thread adapted to receive a connecting rod having a screw thread of pitch different from that of the thread of the cavity. A locking screw cooperates with the head of the implant screw to clamp and bind the connecting rod relative to the implant screws.

Abstract: A device for stabilizing fractures of the upper end of the femur, comprising a plate which includes in its upper part two parallel, cylindrical barrels offset by a first angle with respect to a vertical plane passing through the middle of the plate and a second angle with respect to a horizontal axis passing through the middle of the plate.

Abstract: A screw for a lumbar-sacral fixator for use on the spine wherein the screw comprises a threaded part and a head which has a notched surface which is inclined with respect to an elongated axis of the screw by an angle of approximately 30.degree. to 45.degree..

Abstract: An elastically deformable cotyloidal prosthesis including a hollow hemispherical cap which includes an outer surface including portions which are deformable while the inner surface thereof is rigid and which further includes a plastic insert having a hemispherical cavity which communicates with an outer beveled edge defining a cylindrical opening thereto. The insert is rotatably adjustable and securable relative to the inner surface of the cap.

Abstract: A spinal fixator comprising two substantially parallel assemblies each which includes a slideway having an open slot therein, a plurality of rings which define a slideway opening having a profile corresponding to that of the slideway, each ring having a bore aligned with a hole in the bottom of the ring through which pedicular screws having a head and self-tapping threads are disposed, and caps secured in the bore of each ring.

Abstract: A total prothesis for the metacarpo-phalangeal joint which includes a first element for anchoring in the phalangeal diaphysis having a tapering head provided with at least two articular surfaces of concave profile and a second element for anchoring in the metacarpo diaphysis having a head including at least two separate articular surfaces. One of the articular surfaces of the second element is generally convex and the other articular surface includes an arcuate ridge which extends outwardly relative to the convex articular surface and toward the articular surfaces of the first element.

Abstract: A modular humeral prosthesis including a humeral stem for anchoring which stem includes a bearing face, a spacer in the form of a wedge having a first face which fits on the bearing face of the stem and a second face, and a humeral semi-spherical cap having a base which is fixed with respect to the second face of the spacer. The manner in which the cap and spacer are connected relative to the bearing face of the stem permits the cap to be adjusted angularly in position about an axis which is off-set from the axis of symmetry of the cap. Elements are provided to lock the cap to the spacer and the spacer to the stem.

Abstract: A prosthesis of the knee which includes an articular element including a slideway in which is mounted the base of a bushing which threadingly receives a centro-medullary stem. The centro-medullary stem extends through the bushing so as to be engageable with impressions formed in the slideway to thereby lock the bushing and stem to the slideway.

Abstract: A total wrist prosthesis with a radio-carpal articular level having a first radio-ulnar center of rotation located in a frontal plane and a medio-carpal articular level having a second radio-ulnar center of rotation located also in the frontal plane but being distinct from the first radio-ulnar center of rotation. The prosthesis including a radial element having an anchoring shank insertable into the distal portion of a radius bone, and a shoulder resting against the distal face of the said radius bone. A plate is connected to the radial element having a concave bearing surface having a radio-ulnar deviation radius of curvature in the frontal plane and a flexion-extension radius of curvature in a sagittal plane smaller than the radio-ulnar deviation radius of curvature.

Abstract: A femoral prosthesis having a bore extending through the stem thereof and which includes a seal surrounding the stem adjacent the bore which acts under pressure of a cement introduced through the bore to seal the cement within the upper portion of the medullary canal of the femur.

Abstract: A device for osteosynthesis of the fractures of the extremities of the femur comprises a plate in which holes are provided for the passage of screws intended to be inserted into the bone to make the fractured bone and the plate solid.One end of the plate to be applied against one of extremities of the femur is wider than the other end and includes three holes arranged in an isosceles triangle. The median plane of the one end defines a plane which forms, with the plane of the rest of the plate, an obtuse angle of between 160.degree. and 175.degree..

Abstract: A nail for the osteosynthesis of fractures of femoral necks, formed of a resilient pre-curved rod having an inner end engageable into the medullary cavity of the femur through a lateral perforation drilled through the inner side of said femur in the vicinity of the process thereof and an outer end which remains exterior to said femur. The rod comprises in the vicinity of said outer end a portion which is bent twice in opposed directions to determine a shoulder which protrudes inwardly with respect to the curvature of said rod and which abuts against the edge of said perforation to retain said nail longitudinally with respect to said femur.

Abstract: A hip prosthesis of which the pin is made in the form of a tube slit in the longitudinal direction in order to give it a transverse elasticity and means enabling the bone to regrow inside this pin. Said pin further comprises a crest or fin provided with openings.

Abstract: A femoral pin for a hip prosthesis, wherein the pin is in the form of a plurality of funicular elements, or strands, issuing from a hilt member. The strands have graduated lengths, are grouped according to their lengths and have their ends opposite the hilt member connected together. The longest strands form the outer contour of the pin member and the shorter strands are within this tapered contour.