Megaprostheses after resection of distal femoral tumors. A rotating hinge design in 30 patients followed for 2-7 years

Abstract

Between 1981-1993, we inserted 32 Kinematic Rotating-Hinge Knee tumor prostheses in 30 patients, of which 2 concerned revisions of the same type of prosthesis. The diagnoses were 21 osteosarcomas, 2 chondrosarcomas, 2 Ewing's sarcomas, 2 metastatic breast carcinomas, 1 multiple myeloma, 1 giant cell tumor and 1 Gorham's disease. The median age was 25 (12-60) years and the median follow-up for survivors was 3.5 (2-6.6) years. There were 7 metastases and 1 local recurrence, 20 knees had excellent (MSTS) scores for motion (median flexion 120°), 8 had good (84°) and 4 had fair (45°). The overall function was excellent in 6 cases, good in 14, fair in 9 and poor in 3. The radiographic assessment (..