(P 276) RECONSTRUCTION WITH TOTAL SCAPULAR REVERSE TOTAL SHOULDER ENDOPROSTHESIS: PRELIMINARY RESULTS FROM A SINGLE INSTITUTE

Objective: Numerous studies have discussed various reconstruction techniques following the resection of scapular tumors. Despite this, an ideal method of reconstruction has yet to be identified. This study aims to assess the functional outcomes and complications associated with total scapular reverse total shoulder prosthesis reconstruction.

Methods: This retrospective study analyzed six patients with scapular tumors treated by total scapulectomy followed by reverse total scapular reverse total shoulder endoprosthesis between June 2023 and May 2024. The Musculoskeletal Tumor Society 1993 (MSTS93) scoring system was employed to evaluate the patients' functional outcomes. Tumor prognosis and surgical complications were also analyzed.

Results: At the final follow-up, two patients died of lung metastasis, while four remained alive. The mean follow-up duration was 5.5 months (range 3-9 months). All patients achieved a satisfactory restoration of the shoulder's contour. The average MSTS-93 functional score was 21.7 (range 17-24). The mean shoulder's range of motion was 50° (range 30°-80°) for forward flexion and 52° (range 30°-80°) for abduction. Skin flap necrosis was observed in one patient. No infection and prosthesis loosening were observed in this study.

Conclusion: In a short-term follow up, the reconstruction of total scapular reverse shoulder prosthesis could provide patients with both satisfactory cosmetic results and enhanced functionality of the shoulder joint following tumor resection. This method represents a feasible solution for the reconstruction of shoulder joint after total scapulectomy.