Pelvic reconstruction using saddle prosthesis following limb salvage operation for periacetabular tumour.

Purpose. To assess the clinical results of pelvic reconstruction using a saddle prosthesis following limb salvage operation for periacetabular tumour. Methods. 12 patients with sarcoma and 4 with metastasis involving the pelvis were treated using the saddle prosthesis between 1995 and 2003 inclusive. Wide pelvic resection was performed for all patients with sarcoma and one with a metastatic lesion; intralesional excision of the acetabulum was undertaken for the remaining 3 patients with metastatic lesions. Oncologic prognosis, operation time, postoperative function, and complications were assessed retrospectively. Results. Of the 12 patients with sarcomas, 5 were alive without evidence of recurrence after a mean followup of 37 months, one was alive with disease, 3 died of the disease, and 3 of other medical conditions. Respective mean postoperative functional scores