2016 Volume 35 Issue 2 Pages 175-179
We report a case of a 33-year-old man with severe heterotopic ossification around the hip, ten months after a hip resurfacing arthroplasty. The patient had a history of a bone cyst which was treated with curettage and beta-tricalcium phosphate grafting on the right hip prior to index surgery. However, eight months postoperatively, avascular necrosis occurred affecting the right hip. The hip joint was exposed using a modified Hardinge approach. A Cormet Resurfacing Prosthesis (Corin, Cirencester, United Kingdom) was implanted. At three weeks after the index surgery, a small ossification occurred around the hip which was observed via a plain radiograph. Ten months postoperatively, the ossification had progressed and the hip joint developed complete ankylosis. However, the patient did not complain of any pain around the hip. Therefore, no further treatment was required. According to the literature, this is a rare case of severe heterotopic ossification that led to ankylosis of the hip joint.
