PROSTHESIS FOR REPAIRING A PATIENT'S DAMAGED HIP JOINT

摘要

Prostheses and methods are described for replacement of the dome areas of the hip joint. A femoral component (150) is provided with a superior articular surface (152) which is curved so as to simulate the shape of the dome area of the patient's femoral head. The damaged or diseased portion of the weight bearing dome area of the femoral head is removed and the femoral component (150) is implanted. An acetabular component (110) is also provided with an inferior curved articular surface (120) which is generally congruent with the superior articular surface (152). The acetabular component (110) is implanted in a recess formed in the patient's acetabulum. The position of the acetabular component (110) is chosen to correspond to the location of the implanted femoral component (150) when the joint is in a weight bearing posture. By use of the components, and the accompanying method, a subtotal hip dome arthroplasty may be effected.