Long-term administration of alendronate sodium caused an atypical femoral shaft fracture in a 36-year-old woman: a case report and literature review.

Long-term bisphosphonate therapy is associated with atypical or insufficiency fractures, particularly in the proximal femur. We observed a case of an atypical femoral shaft fracture in a patient with a long-term history of alendronate therapy. A 36-year-old woman was admitted with a complaint of pain in her right mid-thigh following low-energy trauma.