Abstract
Context: Fibrous dysplasia (FD) is a rare skeletal disorder, resulting in deformity, fracture, functional impairment, and pain. Bisphosphonates have been advocated as a potential treatment. Objective: To determine the efficacy of alendronate for treatment of FD. Design: Two-year randomized, double-blind, placebo-controlled trial. Setting: Clinical research center. Patients: Forty subjects with polyostotic FD (24 adults, 16 children). Subjects were randomized and stratified by age. Interventions: Study drug was administered over a 24 month period in 6 month cycles (6 months on, 6 months off). Alendronate dosing was stratified: 40 mg daily for subjects >50 kg, 20 mg for 30–50 kg, 10 mg for 20–30 kg. Main Outcome Measures: Primary endpoints were bone turnover markers, including serum osteocalcin, and urinary NTX-telopeptides. Secondary endpoints included areal bone mineral density (aBMD), pain, skeletal disease burden score, and functional parameters including the 9-min walk test and manual muscle testing. R...
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