Figure 2.

Radiographs of the left femur before and after the atypical fracture. (a) No abnormal findings are evident at the time of right femoral atypical fracture. (b) Radiograph at initial presentation to us showed diffuse cortical thickening and beaking of the lateral cortex in the subtrochanteric region of the left femur. (c) A left subtrochanteric femoral fracture with a unicortical beak, hypertrophied cortices, and a transverse pattern is evident. (d) The fracture was fixed by intramedullary nailing and union is evident within 4 weeks of the left femoral fracture.