alexa A single infusion of zoledronate prevents bone loss after stroke.
Orthopaedics

Orthopaedics

Journal of Osteoporosis and Physical Activity

Author(s): Poole KE, Loveridge N, Rose CM, Warburton EA, Reeve J

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Abstract BACKGROUND AND PURPOSE: Stroke is a major risk factor for hip fracture. Patients with intermediate rather than severe or mild stroke deficits at the time of hospital discharge have the most fractures. This proof-of-concept study evaluated the efficacy of a single infusion of zoledronate, an intravenous bisphosphonate, in preserving hip bone density after stroke. METHODS: In a 1-year randomized, double-blind, placebo-controlled, clinical trial, 27 newly hemiplegic patients (6 females, 21 males) with acute stroke were assigned to receive 4 mg of the intravenous zoledronate (n=14) or placebo (n=13) within 35 days. Strict inclusion criteria were followed-up to ensure recruited patients were likely to have residual functional impairment. Both groups received calcium and vitamin D supplementation. The primary outcome measure was the change in bone mineral density (BMD; Lunar Prodigy) at the hemiplegic hip during the year of investigation. RESULTS: The treatment was generally well tolerated. Mean total hip BMD was unchanged in the hemiplegic hip of the zoledronate group (mean 0.0\% change), whereas in the placebo group the total hip BMD changed by -5.5\%, with the greatest bone loss observed in the trochanteric subregion (mean, -8.1\%). On the unaffected side the mean change in total hip BMD was +1.0\% with zoledronate versus a mean change of -2.7\% without. Repeated measures ANOVA confirmed the significance of the differences between groups at both hips (hemiplegic, P<0.001; unaffected, P=0.002). CONCLUSIONS: Stroke patients were protected from the deleterious effects of hemiplegia on hip bone density for at least 1 year after a single infusion of zoledronate. This article was published in Stroke and referenced in Journal of Osteoporosis and Physical Activity

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