In Reply: Drs Girgis and Seibel suggest that the lack of radiograph corroboration in our study precluded differentiation of typical osteoporotic fractures from those with characteristic atypical radiographic features. We agree. The classic radiographic features associated with atypical fractures had not been fully defined at the time of our study.1 As such, we did not use the term atypical to refer to the cases in our study.
Park-Wyllie LY, Hawker GA, Laupacis A. Bisphosphonate Use and Femoral Fractures in Older Women—Reply. JAMA. 2011;305(20):2068–2069. doi:10.1001/jama.2011.675
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