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Atypical femoral fractures: a complication of prolonged bisphosphonate therapy?

Christian M Girgis and Markus J Seibel
Med J Aust 2011; 194 (2): 102-103.
Published online: 17 January 2011

In reply: We thank Falkenberg for his comments in reference to our article in the Journal.1 Two recent large-scale population-based studies have suggested that subtrochanteric femur fractures are rare both in the general population and among bisphosphonate users.2,3 While personal experience may often suggest otherwise, a cluster of atypical fractures cannot be used as an indicator of true incidence in the absence of data on the frequency of bisphosphonate use in a particular population.

  • Christian M Girgis
  • Markus J Seibel

  • University of Sydney, Sydney, NSW.

Correspondence: cgirgis@usyd.edu.au

Competing interests:

Markus Seibel is a member of advisory boards for Merck Sharp and Dohme, Novartis, Amgen and Sanofi-Aventis. He has also received funding from these companies for institutional research.

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