Fig. 1
En bloc resection of osteosarcoma and reconstruction of tumor-type hemi-shoulder replacement. a Preoperative anteroposterior and lateral X-rays. b Coronal and sagittal CT scans showed extensive bone destruction with periosteal reaction. c Anteroposterior X-ray three months after surgery showed that the prosthesis was firmly fixed and the joint was stable. d The slightly downward displacement of the prosthesis was found at 1Â year postoperatively