Fig. 1From: Radiographic classification and treatment of fibrous dysplasia of the proximal femur: 227 femurs with a mean follow-up of 6 yearsType 1 femur in a 43-year-old woman. The red arrow indicates the lesion. a Fibrous dysplasia was present in the femoral neck. The neck-shaft angle was normal (125°). There was no varus deformity in the proximal femoral shaft. b The cortex around the lesion was intact on axial CTBack to article page