Although relatively rare, hip replacement surgery (hip arthroplasty) can be unsuccessful. If unsuccessful, repeat or revision hip replacement may be necessary. In some patients, the parts of the hip replacement may become infected with bacteria. If this occurs, surgery usually is required to eradicate the infection. When properly treated, approximately 90% of infections are cured.
Loosening of the hip replacement parts from the bone also can occur. This will result in pain with weight-bearing activity and usually can be corrected with revision surgery.
Dislocation of the prosthetic head from the socket also can occur. Usually, this can be treated without surgery through patient education and physical therapy to strengthen the muscles around the hip. If it happens repeatedly, repeat surgery may be necessary.