Heterotopic ossification in rehabilitation patients who have had internal fixation of an acetabular fracture

High-energy trauma patients often have multiple injuries and are frequently seen by a physiatrist following their acute care. Acetabular fractures are common in this patient population. Following surgical treatment of acetabu lar fractures, a very high incidence of heterotopic ossification can occur. We describe 94 patients who underwent posterior surgical fixation of an ac etabular fracture. Of these, 87 received heterotopic ossification prophylax is in the form of irradiation or indomethacin; 5 did not receive prophylaxi s. Seven of the 45 patients who were initially started on indomethacin had their medication discontinued for various reasons. Of the 12 patients who d id not receive adequate prophylaxis, 5 developed disabling heterotopic ossi fication. We present our experience with this patient population, and we di scuss the importance of adequate prophylaxis for heterotopic ossification.