Segmental limb reconstruction after tumor resection.

摘要

Limb salvage of large segmental and osteoarticular defects after tumor resection has become the standard of care for most patients with musculoskeletal tumors because overall survival is the same when compared with that seen in amputation patients. This study examines limb salvage for the surgical management of large segmental defects in terms of local recurrence, complications, and functional outcome in both primary and metastatic lesions. We retrospectively identified 32 patients with benign or malignant tumors of bone who underwent resection and limb salvage reconstruction by means of a custom or modular metal implant between 1985 and 1995. The most common tumor sites were the proximal femur (41%), distal femur (37.5%), and proximal humerus (12.5%). Primary bone lesions accounted for 18 patients (56%); metastatic disease accounted for 14 patients (44%). Osteosarcoma (n = 11) and chondrosarcoma (n = 3) were the most frequent primary tumors. The overall limb salvage rate (91%) was high, yet complications (28%) were common. Except for 3 patients who underwent amputation after prosthetic failure, all surviving patients were independent with or without assistive devices at latest follow-up. In patients with advanced metastatic disease, average survival was 7.6 months. No cases of aseptic loosening or implant breakage were observed in patients followed up for 2 years or more. Treatment after tumor resection with a limb salvage prosthetic reconstruction has shown good functional outcomes with an acceptable complication rate. This modality, therefore, offers patients a more favorable functional outcome with a more energy-efficient gait when compared with limb amputation.