Functional Outcomes of Patients Treated With Modular Tumor Resection Prosthesis Following Proximal Humerus Tumor

Objectives: This study aims to evaluate the functional outcomes of patients undergoing hemiarthroplasty with modular tumor prostheses for proximal humeral tumors. Material and Methods: A total of 28 patients were included in the study, with an average follow-up of 71.11 months. The mean age of participants was 47.8 years, and the cohort included various tumor types, including osteosarcoma and chondrosarcoma. Functional outcomes were assessed using the Modified Musculoskeletal Tumor Society evaluation system, the American Shoulder and Elbow Surgeons score, and the Visual Analog Scale for pain.Results: The postoperative results demonstrated an average Modified Musculoskeletal Tumor Society score of 21.68 and an American Shoulder and Elbow Surgeons score of 52.71, reflecting substantial improvements in both shoulder function and pain management. Notably, the Visual Analog Scale scores decreased significantly, from a preoperative average of 6.57 to a postoperative average of 3.79. This reduction in pain intensity indicates that patients experienced a marked alleviation of discomfort following the surgical intervention.Conclusion: Modular tumor prosthesis represents a reliable and effective treatment option for proximal humerus tumors. Although low infection and recurrence rates were noted, further research with larger sample sizes and longer follow-up is necessary to fully understand the long-term durability of the prosthesis and its potential complications, particularly in younger, more active patients.