I was born with developmental hip dysplasia. Physical therapy and a hip operation at age six have kept me pain free. Now at age 46, I am having constant pain. My hip dislocates from time to time. Would a hip joint replacement help me?

Studies of hip replacement for developmental dysplasia show a wide range of results. A recent report from Japan shows the results after hip replacement for this problem. Some patients were followed for 26 years. Besides the new joint, each patient had a large bone graft used to form a deeper hip socket.

They found that problems are more likely to occur in patients under age 50 with this operation. The authors suggest that other operations can be tried first before removing the joint and replacing it. Patients must be advised about the right level of activities. This will help preserve the hip before surgery.