Functional reconstruction of the extensor mechanism following massive tumor resection from the anterior compartment of the thigh

Background: The authors describe the surgical technique and functional results of extensor mechanism reconstruction after major resections of soft-tissue tumors from the anterior compartment of the thigh. Methods: Between 1983 and 2003, 78 patients with soft-tissue sarcomas of the anterior compartment of the thigh were operated on at the authors' institution. Sixteen patients with extensive resections of the quadriceps muscle and one patient with a complete resection of the femoral nerve underwent functional extensor mechanism reconstruction. Depending on the type of resection, one or more of the following muscles were used for reconstruction: the sartorius, biceps femoris, semitendinosus muscles. After two patients with a follow-up of less than 12 months were excluded, 15 patients were evaluated. The authors performed a retrospective analysis of these patients' medical records, with an emphasis on functional outcome. Results: According to the Musculoskeletal Tumor Society score, functional results were estimated to be good to excellent in 13 patients and fair in two. Most patients had a satisfactory active range of motion, and muscle strength and functional results correlated with the extent of resection. Conclusion: The authors recommend functional muscle transfer reconstruction after extensive resection of the quadriceps muscle or resection of the femoral nerve with one or more of the following muscles: the sartorius, the biceps femoris, and the semitendinosus muscles.