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. 2017 Jul 31;114(33):8722–8727. doi: 10.1073/pnas.1704460114

Fig. 1.

Fig. 1.

Radiographs showing morphology of a typical intertrochanteric fragility fracture (A), compared with an AFF (B). Whereas the typical fracture has a tortuous crack path indicative of interaction with microstructural features that act as toughening mechanisms, the atypical fracture has a transverse morphology indicative of a brittle fracture process.