X-ray image of aseptic loosening of the distal stem of the humeral intercalary endoprosthesis. Resection of the metastasis revealed it was a uterine sarcoma solitary metastatic lesion of the left humerus. After 23 months, there was aseptic loosening. Due to the patient’s poor general condition (pulmonary and multiple skeletal metastases) and acceptable functional result (a Musculoskeletal Tumor Society score of 21), revision was not indicated. This image is from patient 7 in Table 1.