Rim bearing ilium mortar transplantation systematic piece null of crotch glenoid revision and supplementation

摘要

An acetabular implant for a hip joint prosthesis comprising a metal cup shell (2) adapted for securing in the acetabulum of a patient, the metal cup shell (2) having a bore (6) into which a liner may be inserted to provide a spherical bearing surface for the ball portion of the hip joint, characterised in that the metal cup shell (2) comprises three apertures (20, 22, 24) positioned for insertion of screws (26,28) into the ilium, ischium and pubic ramus of the patient and a continuous circumferential flange (8) around the opening of the bore (6), the flange (8) having an outside diameter (X) which is at least 10% greater than the outside diameter (Y) of the remainder of the metal cup shell (2) at its widest point, the circumferential flange (8) providing a bearing surface (10) for contacting the rim (12) of the acetabulum of the patient when the metal cup shell (2) is fitted.