Abstract: An acetabular cup has a shell having a recess therein, the recess is open to an outer surface of the shell. The recess has an enlarged portion spaced from the shell outer surface with a diameter greater than the diameter of the opening at the surface. An insert is provided for insertion into the recess in the shell outer surface. The insert has a height greater than a depth of the recess and has a solid portion and a bifurcated portion having at least two side openings forming two to four sectors. A base of the sectors formed by bifurcated portion has an outwardly extending flange for insertion into the enlarged portion of the recess.

Abstract: An acetabular cup has a shell having a recess therein, the recess is open to an outer surface of the shell. The recess has an enlarged portion spaced from the shell outer surface with a diameter greater than the diameter of the opening at the surface. An insert is provided for insertion into the recess in the shell outer surface. The insert has a height greater than a depth of the recess and has a solid portion and a bifurcated portion having at least two side openings forming two to four sectors. A base of the sectors formed by bifurcated portion has an outwardly extending flange for insertion into the enlarged portion of the recess.

Abstract: A hip prosthesis has a cup element having a part-spherical inner bearing surface and a spherical center through which the plane of a diametrical equator extends, and a ball shaped head which has a diameter to cooperate with the inner bearing surface to allow movement therein. The cup has a flat cordal lower surface parallel to the plane of an equator of the ball. The inner bearing surface has two or more equally spaced extension portions which extend beyond the diametrical equator towards the mouth of the cup. The surfaces of the two or more portions are relieved to enable the ball shaped head to be inserted into the cup by moving the flat on the ball across the face of one of the bearing surface extension portions and then rotating ball head to a position in which the flat on the ball head faces the mouth of the cup.

Abstract: A total hip prosthesis has a cup element having a part-spherical inner bearing surface and a spherical center through which the plane of a diametrical equator extends, and a ball shaped head which has a diameter to cooperate with the inner bearing surface to allow free movement therein. The cup has a flat cordal lower surface parallel to the plane of an equator of the ball. The inner bearing surface has two or more equally spaced extension portions which extend beyond the diametrical equator towards the mouth of the cup and two or more portion below the diametrical equator and between the extension portions. The surfaces of the two or more portion are relieved to enable the ball shaped head to be inserted into the cup by moving the flat on the ball across the face of one of the bearing surface extension portions and then rotating ball head to a position in which the flat on the ball head faces the mouth of the cup.

Abstract: A targeting apparatus for use in performing endofemoral osteotomy surgery has a support element provided with a drill guide. The apparatus has a connector for securing a support element to the proximal end of a prosthesis to be implanted. The apparatus includes a proximal location element which is shaped to extend around the great trochanter and muscle of the femur in which the implant is to be located. An adjustor is provided for adjusting the angular position of the drill guide in relation to the femur about a proximal-distal axis.

Abstract: A targeting apparatus for use in performing transfemoral osteotomy surgery includes a support element provided with a drill guide. A device is provided for securing the support element to a prosthesis to be implanted, and to a resectioned femur. An adjusting device for adjusting the angular position of the drill guide in relation to the resectioned femur about a proximal-distal axis is also included.

Abstract: A targeting apparatus for use in resectioning a femur when performing transfemoral osteotomy surgery has a drill guide element which includes a line of drill openings each of which is adapted to guide a drill for drilling holes in the femur. A connector is provided for securing the drill guide element to a femur to be resectioned with the line of openings extending in a proximal/distal direction along the femur.

Abstract: Targeting apparatus for use in performing endofemoral osteotomy surgery comprising a support element provided with a drill guide, means for securing a support element to the proximal end of a prosthesis to be implanted and which include a proximal location element which is shaped to extend around the great trochanter and muscles of the femur in which the implant is to be located, and means for adjusting the angular position of the drill guide in relation to the femur about a proximal-distal axis.

Abstract: A targeting apparatus for use in resectioning a femur when performing transfemoral osteotomy surgery has a drill guide element which includes a line of drill openings each of which is adapted to guide a drill for drilling holes in the femur.

Abstract: A targeting apparatus for use in performing transfemoral osteotomy surgery includes a support element provided with a drill guide. A device is provided for securing the support element to a prosthesis to be implanted, and to a resectioned femur. An adjusting device for adjusting the angular position of the drill guide in relation to the resectioned femur about a proximal-distal axis is also included.

Abstract: An apparatus for attaching an anvil or an impaction hammer to a proximal impactor to be impacted into a bone. The apparatus includes an impaction rod, the distal end of which is provided with an attachment element for releasably securing it to a securing device provided on the proximal impactor.