Plain radiograph of an anatomical proximal humeral replacement (hemiarthroplasty) after resection of primary sarcoma. The extent of longitudinal bone resorption (stress shielding) is measured and related to the length of the stem (14.65/77.56 × 100 = 19%). On the glenoid side, a screw anchor is visible for fixation of the attachment tube. In state after appropriate surgical measures vascular clip come to display.