Ilium mortar transplantation systematic piece null of crotch glenoid revision and supplementation

摘要

An acetabular implant comprising a metal cup shell (2) adapted for securing to the pelvic bone of a patient and a plastics insert for receiving the ball portion of a hip joint, the bore (4) of the metal cup shell (2) and outer surface of the plastics insert being dimensioned to allow a pressure fit of the plastics insert within the bore (4) at the body temperature of the patient, in which the surface (6, 8) of the metal shell (2) defining the bore (4) is provided with one or more apertures (10,16) e.g. a circumeferential groove (10) and a radial groove (16), into which the plastics material of the insert may flow when the insert is fitted to provide a mechanical interlock between the insert and cup shell (2) thereby securing the insert against rotational and distractional forces relative to the metal cup shell (2).