Abstract: A modular prosthetic device for hip joint replacement comprising a stem adapted to be inserted within the femur, a neck element and a spherical head, the stem comprising in an upper region a cavity for accommodating a lower portion of the neck element, which can be coupled in an upper region to a spherical element.

Abstract: An endomedullary nail for the treatment of proximal femur fractures, comprising an elongate body (12) having a proximal portion (14) and a distal portion (16). The proximal portion (14) has a first and a second hole (20, 21) for a respective cephalic screw (22, 23, 24, 25), each having a transversal axis to the axis of the proximal portion (14). The first hole (20) is split into two passages each having a respective axis (A, B) with a predetermined angle relationship with respect to the axis (C) of the second hole (21). The passages (30, 31) are arranged to be selectively engaged by a respective cephalic screw (22, 24).

Abstract: An endomedullary nail for the treatment of proximal femur fractures, comprising an elongate body (12) having a proximal portion (14) and a distal portion (16). The proximal portion (14) has a first and a second hole (20, 21) for a respective cephalic screw (22, 23, 24, 25), each having a transversal axis to the axis of the proximal portion (14). The first hole (20) is split into two passages each having a respective axis (A, B) with a predetermined angle relationship with respect to the axis (C) of the second hole (21). The passages (30, 31) are arranged to be selectively engaged by a respective cephalic screw (22, 24).

Abstract: An intramedullary cavity nail for the treatment of proximal femoral fractures, comprises a solid elongate body with a proximal portion (2) having at least one transverse bore for accommodating a corresponding screw (9, 10) for stabilizing the femoral neck, the proximal portion being joined to a distal portion (3) having at least one distal bore (16) for accommodating at least one diaphysis screw for stabilizing the distal part of the femur. The proximal portion (2) has a substantially constant diameter (.phi..sub.p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (.phi..sub.d) which is less than that of said proximal portion, for ease of insertion in the medullary canal of the femur without any drilling. The proximal and distal portions (2, 3) are substantially rectilinear and form between themselves a predetermined deviation angle (.beta.) in a lateral plane.

Abstract: An external trochanter splint, especially for surgical stabilization of femoral pertrochanter and subtrochanter fractures, comprises a pair of clamps (2,3) each with its own longitudinal axis (a,b). One of these clamps (2) is designed for the movable locking of a first group of bone screws or bolts (V) inserted into the mass of the trochanter, the other (3) is designed for the movable locking of a second group of bone screws or bolts (W) inserted into the proximal diaphysis of the femur. The two clamps are connected together in side-by-side relation via an intermediate connecting member (4). First provision is made for immobilizing a selected angle of divergence (.alpha.) between the longitudinal axes (a,b) and second provision is made for immobilizing a selected angle of rotation of at least one of the said clamps (3) about its own longitudinal axis (b).

Abstract: A self-gradually locking chuck for drills or similar devices particularly suitable for portable drills used in surgery. It includes a cylindrical sleeve which can be coaxially fixed to a rotating shaft, a ferrule having a conical section provided internally with lobes, a cylindrical portion at one of its ends for engagement with said sleeve and a cylindrical portion at the other end. A first mounting, perforated longitudinally by a hole, includes a central portion having locking jaws which are movable in holes in a direction convergent upon the axis of the chuck and two second mountings opposite to the central body. A spring and centering device are provided. A cylindrical ferrule is threaded to a part of the first mounting as it projects from the first-mentioned ferrule. The first mounting and ferrule move axially in relation to each other and in relation to the cylindrical sleeve in which the ferrule can be releasably secured to the cylindrical ferrule by a retaining device.

Abstract: Apparatus for the external setting or securing of the parts of a fractured bone, comprising an elongate central body member comprised of two parts mutually displaceable parallel to the longitudinal axis of said member, whereby each part of the central body member supports a clamping device for the pins to be inserted into a part of the bone. The two mutually displaceable parts are engaged by a pressing and tensioning device causing the mutual longitudinal displacement of the part. When the pins are inserted in the bone parts to be pressed together, the pressing and tensioning device is actuated until the two bone sections abut against each other at the required pressure. Then the securing devices fix the two parts of the central body member into their position. Subsequently, the pressing and tensioning device is removed from the central body member since it is no longer required.