| 摘要 |
A hip-joint endoprosthesis has a head (5) that can be medio-laterally moved parallelly to a tangent that intersects (b) the lateral edge of the proximal femoral infundibulum of the hip-joint and that follows the inner profile (b<1>) of the curved neck of the femur. This hip-joint endoprosthesis allows the center of rotation of the hip-joint to be reproducibly adjusted by means of an adjustable head (5). Toothed parts (12, 13, 15, 16) ensure a (fine) stepped adjustability of the displacement in the medio-lateral direction (B-B<1>) and of the rotation around an axis (A-A<1>) that is perpendicular to the plane of displacement (B-B<1>). Securing is ensured by a single screw (10) that braces against each other the interlocking toothed parts (12, 13, 15, 16). A coupling ball (6) mounted on a cone (17) over the head (5) of the prosthesis can be vertically adjusted by pressing-in the cone more or less deeply. |
