EXPERIENCE OF ENDOPROSTHETICS OF PATIENTS WITH PELVIC TUMORS

Abstract

This study presents an analysis of the effectiveness of organ-preserving surgeries using various endoprostheses in patients with malignant tumors of the pelvic bones. Nine patients (male - 3, female - 7) with malignant tumors of the pelvic bones (chondrosarcoma - 7, osteosarcoma - 1, me-tastases - 2) underwent organ-preserving surgeries with endo-prosthetics of the postresection defect. The average age of the patients was 38 years (15-67 years). During the operation two patients were equipped with individual prostheses of Waldemar Link, one patient - a combined prosthesis with an individual pelvic component (from Biomedical) and a modular femoral component. In 7 patients modular structures of Implant-Сast were used. The pelvic component was cementless, femoral -more often (7 cases) on a cement basis. Patients were assessed by oncological, surgical and functional results. Anatomically-functional status was assessed on the MSTS scale. As a conclusion good functional and oncological results can be obtained even with the resection of three segments of the pelvic bones if the ileal bone volume is sufficient for a good fixation of the endoprosthesis. To achieve the most durable fixation of the femoral component of the endoprosthesis it is better to use bone cement.