Treatment of Atypical Ulnar Fracture Associated with Bisphosphonate Therapy: A Case Report

Abstract

Bisphosphonates can cause atypical fractures when taken for a long time. Atypical fractures appear mainly as femoral subtrochanteric or shaft fractures. On the other hand, reports of atypical fractures in the proximal ulna are relatively rare, with a high proportion of nonunion cases. This paper reports a case of nonunion after fixation for atypical fractures of the proximal ulna.