Atypical femur fractures associated with bisphosphonates: from prodrome to resolution

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Braulio Sastre-Jala *
Elaine Heredia-Heredia
Nuria Franco-Ferrando
Jaime Poquet-Jornet
(*) Corresponding Author:
Braulio Sastre-Jala | sanjuan.rafcer@gmail.com

Abstract

Atypical fractures related to the prolonged use of bisphosphonates are caused by low energy mechanisms and are characterized by oblique and transverse lines and frequent bilateralism. We present a clinical case of a patient who we believe illustrates, both in clinical and radiological aspects, the new definition of atypical femur fracture related to treatment using bisphosphonates treated conservatively and successfully with discharge and teriparatide 20 mcg/80 mcl s.c./24h. The appearance of painful symptoms in the upper thigh, especially if bilateral, in patients treated with bisphosphonates for long periods of time, makes it necessary to dismiss bone lesions that might otherwise suggest atypical fracture. In those cases where the fracture is incomplete, restoring bone metabolism through the administration of teriparatide 20 mcg/80 mcl s.c./24h could prevent displaced fractures.

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