Heterotopic ossification after total hip replacement.
Heterotopic bone formation occurs in up to 70% of patients who have undergone a total hip arthroplasty. Although histologically similar to mature skeletal bone, the ectopic tissue limits postoperative motion and causes pain in 2% to 4% of patients. The ossification is classified and graded according to radiographic appearance. Males with bilateral hypertrophic osteoarthritis who have had prior hip surgery are at high risk. Prophylaxis with Indocin or low-dose irradiation treatment is effective. Excision and irradiation therapy can treat established bony bridges.
Warren
S B
SB
Department of Orthopedics, Columbia-Presbyterian Medical Center, New York, New York.
D000844:Ankylosis / Q000209:etiology / Q000517:prevention & control; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging* / Q000532:radiotherapy / Q000601:surgery; D011183:Postoperative Complications / Q000209:etiology; D011859:Radiography; D012008:Recurrence