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Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_8 | Pages 8 - 8
1 Jun 2015
Eisenstein N Bhavsar D Khan S Rees R
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Over the last 10 years atypical femoral fractures (AFFs) have become recognised as a complication of standard-dose bisphosphonate use. In 2014 the American Society for Bone and Mineral Research published updated diagnostic criteria for AFF. We undertook a 5-year retrospective analysis of the trauma admission database at a major trauma centre to establish the incidence of this problem in our patient population. Initial screening was performed using keyword-matching methodology to produce a shortlist of patients with low-energy femoral fractures. These patients’ case notes, radiographs, and electronic discharge summaries were reviewed to discriminate AFF from typical femoral fractures. Initial filtering identified a total of 112 low energy femoral fractures. Of these, 12 were confirmed as AFFs. 58% (7/12) of the AFF group were on bisphosphonates compared to 15% (15/100) of the typical femoral fracture group. This finding was statistically significant (p = 0.0004). These data show that there is a link between bisphosphonate use and AFF. However, a causal relationship cannot be inferred. The incidence of AFF in our study is broadly in line with the published data.