Table 1.

Major and Minor features for defining atypical femoral fractures [5]

	Major features	Minor features
Fracture history	No or minimal trauma	Prodromal pain in the groin or thigh History use of other pharmacologic agents such as glucocorticoids or bisphosphonates
Location	Subtrochanteric or femoral shaft	Bilateral
Configuration	Transverse or short oblique Noncomminuted Medial cortical spike	Localized periosteal reaction of the lateral cortex Generalized cortical thickening Signs of delayed healing