Figure 1

Localized osteosarcoma complicated by pathologic fracture of the humerus in an 18-year old patient. (a) X-ray of A-P position for patient at presentation; (b) Preoperative MRI indicating extraosseous lesion and undisplaced fracture of the humerus; (c) The resected specimen including the proximal humerus and biceps at the osteotomy level; (d) Reconstruction with semi-shoulder prosthesis; (e) Postoperative X-ray of affected arm.