Table 1 2013 ASBMR task force criteria of atypical femoral fractures
From: Management of atypical femoral fracture: a scoping review and comprehensive algorithm
ASBMR criteria: Four of five major criteria should be observed; additional minor criteria are not necessary for diagnosis but could be observed in association to the major criteria. | |
|---|---|
Major | - The fracture is associated with minimal or no trauma, as in a fall from a standing height or less - The fracture line originates at the lateral cortex and is substantially transverse in its orientation, although it may become oblique as it progresses medially across the femur - Complete fractures extend through both cortices and may be associated with a medial spike; incomplete fractures involve only the lateral cortex - The fracture is noncomminuted or minimally comminuted - Localized periosteal or endosteal thickening of the lateral cortex is present at the fracture site (“beaking” or “flaring”) |
Minor criteria | - Generalized increase in cortical thickness of the femoral diaphyses - Unilateral or bilateral prodromal symptoms such as dull or aching pain in the groin or thigh - Bilateral incomplete or complete femoral diaphysis fractures - Delayed fracture healing |