Bone Pathology Database

Teaching Version


Text in Italics is general (instructional) information

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2nd image
X ray
X Rays show the L femur is deformed. The bone is coarsely trabeculated and there are radiolucent cyst like areas within it. The femur is widened. There is a pathological fracture of the subtrochanteric region and the junction of the proximal and middle thirds. The lytic area in the femur neck is from a previous attempt at fixation with a sliding screw.
Radiological features of Fibrous Dysplasia
Radiographically, fibrous dysplasia appears as a well circumscribed lesion in a long bone with a ground glass or hazy appearance of the matrix. There is a narrow zone of transition and no periosteal reaction or soft tissue mass. The lesions are normally located in the metaphysis or diaphysis. There is sometimes focal thinning of the overlying cortex, called "scalloping from within". The radiological appearance can also be cystic, Pagetoid, or dense and sclerotic. Repeated fractures through lesions in the proximal femur can result in the formation of a so-called shepherd's crook deformity. F

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