title: Prophylaxis of heterotopic ossification of the hip: systematic review and meta-analysis.
abstract: Heterotopic ossification (HO) is a potentially severe, if infrequent, complication in hip surgery, and uncertainty exists regarding whether to use NSAIDs or radiation in its prevention. Thus, we systematically reviewed the literature in MedLine, EMBASE, CINAHL, and the Cochrane Controlled Trial Register and, after ruling out publication bias and data heterogeneity, performed a meta-analysis of randomized, controlled trials to assess effectiveness and complications of NSAIDs and radiation in the prevention of HO. We identified nine studies reporting on effectiveness and complications including a total of 1295 patients. The pooled risk ratio for the effectiveness in HO prevention was 0.96 (95% confidence interval, 0.88-1.06) and was independent of the type of surgery (THA or open reduction and internal fixation). There was no association with gender, age, length of followup, or year of publication. The risk ratio for associated complications was 0.79 (95% confidence interval, 0.45-1.41), and, again, was independent of the aforementioned factors. We found no evidence for a statistically significant or clinically important difference between NSAIDs or radiation in preventing HO.
authors.affiliation: Department of Orthopedic Surgery, Children's Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Enders 1016, Boston, MA 02115, USA. patrick.vavken@childrens.harvard.edu
authors.forename: Patrick
authors.initials: P
authors.lastname: Vavken
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Castellani
authors.forename: Thomas P
authors.initials: TP
authors.lastname: Sculco
mesh_terms: D000368:Aged; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects / Q000627:therapeutic use*; D019317:Evidence-Based Medicine; D005260:Female; D006621:Hip Joint / Q000187:drug effects / Q000528:radiation effects / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D019637:Orthopedic Procedures / Q000009:adverse effects*; D009999:Ossification, Heterotopic / Q000209:etiology / Q000517:prevention & control*; D018579:Patient Selection; D011829:Radiation Dosage; D011878:Radiotherapy / Q000009:adverse effects; D018570:Risk Assessment; D012307:Risk Factors
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal