title: Functional results and complications following conversion of hip fusion to total hip replacement.
abstract: Eighteen hip fusions were converted to total   hip replacements. A constrained acetabular liner was used in three hips.   Mean follow up was five years (two to 15). Two (11%) hips failed,   requiring revision surgery and two patients (11%) had injury to   the peroneal nerve. Heterotopic ossification developed in seven   (39%) hips, in one case resulting in joint ankylosis. No hips dislocated.  Conversion of hip fusion to hip replacement carries an increased   risk of heterotopic ossification and neurological injury. We advise   prophylaxis against heterotropic ossification. When there is concern   about hip stability we suggest that the use of a constrained acetabular   liner is considered. Despite the potential for complications, this procedure   had a high success rate and was effective in restoring hip function.
authors.affiliation: Chapel Allerton Hospital, Department of Orthopaedics, Chapel Road, Leeds LS7 4SA, UK.
authors.forename: J
authors.initials: J
authors.lastname: Aderinto
authors.forename: O B
authors.initials: OB
authors.lastname: Lulu
authors.forename: D J
authors.initials: DJ
authors.lastname: Backstein
authors.forename: O
authors.initials: O
authors.lastname: Safir
authors.forename: A E
authors.initials: AE
authors.lastname: Gross
mesh_terms: D000328:Adult; D000368:Aged; D001170:Arthritis, Infectious / Q000601:surgery*; D001174:Arthrodesis; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000601:surgery*; D006620:Hip Fractures / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000209:etiology; D059348:Peripheral Nerve Injuries / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000209:etiology; D010543:Peroneal Nerve / Q000000981:diagnostic imaging / Q000293:injuries; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000453:epidemiology; D011475:Prosthesis Failure; D011859:Radiography; D020127:Recovery of Function; D012086:Reoperation / Q000295:instrumentation / Q000379:methods; D012189:Retrospective Studies; D016896:Treatment Outcome