Fig. 1

Plain radiographs of the patient. a A comminuted fracture across the supracondylar area of the right humerus; and a brown tumor at the shaft of the right humerus, proximal radius, and proximal shaft of the right ulnar. b A brown tumor with a pathological fracture at the left proximal femoral shaft, with total displacement. c A brown tumor with a pathological fracture at the left tibial shaft (white arrow indicates a pathological fracture; asterisk indicates a brown tumor)