Abstract: A shoulder prosthesis assembly includes a metaglenoid element (7) having a plate (13) with a central tubular bushing (14) and members for anchoring it in the glenoid cavity. The assembly also includes a glenoid sphere (9) that fits over the metaglenoid element which has an axial screw that is (35) screwed into the bushing. The glenoid sphere has a member to facilitate installation thereof on the metaglenoid element. The member may include a pin (46) adapted to slide in the tubular bushing (14) and in an axial channel of the screw, so that the glenoid sphere (9) can be screwed into place without any risk of damaging the thread of the screw or the tapping of the bushing.

Abstract: A shoulder prosthesis assembly includes a metaglenoid element (7) having a plate (13) with a central tubular bushing (14) and members for anchoring it in the glenoid cavity. The assembly also includes a glenoid sphere (9) that fits over the metaglenoid element which has an axial screw that is (35) screwed into the bushing. The glenoid sphere has a member to facilitate installation thereof on the metaglenoid element. The member may include a pin (46) adapted to slide in the tubular bushing (14) and in an axial channel of the screw, so that the glenoid sphere (9) can be screwed into place without any risk of damaging the thread of the screw or the tapping of the bushing.

Abstract: A shoulder prosthesis assembly includes a metaglenoid element (7) having a plate (13) with a central tubular bushing (14) and members for anchoring it in the glenoid cavity. The assembly also includes a glenoid sphere (9) that fits over the metaglenoid element which has an axial screw that is (35) screwed into the bushing. The glenoid sphere has a member to facilitate installation thereof on the metaglenoid element. The member may include a pin (46) adapted to slide in the tubular bushing (14) and in an axial channel of the screw, so that the glenoid sphere (9) can be screwed into place without any risk of damaging the thread of the screw or the tapping of the bushing.

Abstract: A shoulder prosthesis assembly includes a metaglenoid element (7) having a plate (13) with a central tubular bushing (14) and members for anchoring it in the glenoid cavity. The assembly also includes a glenoid sphere (9) that fits over the metaglenoid element which has an axial screw that is (35) screwed into the bushing. The glenoid sphere has a member to facilitate installation thereof on the metaglenoid element. The member may include a pin (46) adapted to slide in the tubular bushing (14) and in an axial channel of the screw, so that the glenoid sphere (9) can be screwed into place without any risk of damaging the thread of the screw or the tapping of the bushing.

Abstract: The invention concerns a shoulder prosthesis assembly comprising a meta-glenoid element (7) formed by a plate (13) provided with a central tubular block (14) an anchoring members in the glenoid cavity (3), and a glenoid sphere (9) designed to top the metaglenoid element and provided with an axial screw (35) screwed into said pin; the glenoid sphere has an articulated surface (11) designed to co-operate with a cup of an associated humeral prosthesis (2); said assembly comprises means (16, 45, 46; 51, 50, 49) guiding the glenoid sphere adapted to facilitate its being fixed on the meta-glenoid element; said means comprise a pin (46) adapted to be slotted into the tubular block (14) and into an axial passage of the screw (35); the glenoid sphere (9) is thus guided by being slid on the pin (46) until the screw (35) is inserted precisely into the axis of the tubular block (14), wherein it can be screwed without any risk of damaging the thread on the screw and the internal thread of the block.

Abstract: Device for securing bits of bone together, particularly small-sized bits of bone, for example bits of metatarsal head, in the form of a spindle comprising an elongate shank (1) followed, after a breakable region (2), by a fixator element (3) extending frustoconically to reduce in diameter in the direction of the anterior end (4), with a screw thread the pitch of which decreases progressively from the anterior end and of which the crests of the thread lie inside a coaxial geometric cylinder (D), the anterior end forming a self-drilling end.

Abstract: Device for securing bits of bone together, particularly small-sized bats of bone, for example bits of metatarsal head, in the form of a spindle including an elongate shank (1) followed, after a breakable region (2), by a fixator element (3) extending frustoconically to reduce in diameter in the direction of the anterior end (4), with a screw thread the pitch of which decreases progressively from the anterior end and of which the crests of the thread lie inside a coaxial geometric cylinder (D), the anterior end forming a self-drilling end.

Abstract: A self-compressive and atraumatic osteosynthesis screw, includes a threaded proximal head, a body forming a threaded distal portion and, between the head and the distal part, a smooth section of short length relatively to the distal portion length, the threading thereof having a greater pitch than that of the proximal head threading, and a longitudinal channel provided from one end to the other of the screw to receive a guide pin. The screw includes a mechanism enabling it to fix small bones or small bone fragments of the skeleton after an osteotomy or a fracture, and in particular one of the five metatarsals of a human foot, including a threading diameter of the distal portion slightly greater than the diameter of the thread root of the proximal head and the diameter of the channel ranges between about 0.8 and 1.0 mm.

Abstract: A knee prosthesis femoral implant includes two condyles integral with a throchlea and a centro-medullary block adapted to be fixed on a support base arranged between the condyles. The implant includes a wedge linking the base and the block. There is appropriate angular positioning of the wedge and the block both in a valgus front plane and in a sagittal plane relative to the reference front plane. The wedge has flat proximal and distal faces forming between them a predetermined angle (&bgr;) which, combined with an angle of inclination (&agr;) at the base surface receiving the wedge, enables, depending on the orientation of the wedge, two different femoral valgus values for each wedge. The wedge can also have different profiles in the sagittal plane. The invention enables a wide range of possibilities for adjusting the femoral valgus and for positioning the wedge in an antero-posterior plane relative to a reference plane, with a reduced number of wedges.

Abstract: Device for joining at least two vertebral bodies, which comprises at least one plate (1) equipped at each end with anchoring parts (1a) (1b) which can be introduced substantially vertically into seats previously established in the vertebral bodies to be joined, and then, after introduction, can be folded back at an angle towards one another in order to exert a constant compression of the vertebral bodies and to ensure perfect anchoring, wherein each anchoring part (1a) and (1b) is connected to the ends of the corresponding plate via a central connection zone (1c) (1d) delimiting two profiled notches (1c1) (1d1) (1c2 (1d2) in order to permit deformation of the zone, in such a way that each pair of anchoring parts permits a compression, both at the level of the plate and at the level of its ends, and in such a way that the anchoring parts at each end of the plate permit a clamping which prevents any extraction.

Abstract: A screw device for the coaptation of two small bone fragments includes a threaded proximal head part and a threaded distal part, the proximal part having a diameter greater than the distal part and having a thread pitch smaller than that of the distal part. The distal part is threaded over substantially its entire length and a short length smooth portion is provided between the proximal and distal parts. The upper edges of the threads of the two threaded parts are perpendicular to the axis of the thread, while their lower edges are oblique, and each threaded part has at its base at least one tapping notch. An axial channel is provided in the screw for permitting the use of a guide pin.

Abstract: A one piece pin, adapted to be driven by a motor, includes a threaded rod having a self drilling end at one end of the threads of the rod. The self drilling end includes a transversely positioned flat portion integral with the rod having a drilling edge with a point. A flat head is formed on the rod at the opposite end of the threads, the head having a pair of diametrically opposite notches which permit the head to be grasped by a tool. A divisible shank is attached to the heads by a zone of reduced resistance to rupture torque.