Abstract

Osteosarcoma is the most common primary bone malignancy. The prognosis of patients after local recurrence is generally poor and management of the locally recurrent disease is not well defined, especially in patients who have undergone limb-sparing surgery. A 20-year-old male presented a local recurrence of conventional osteosarcoma at the popliteal fossa with encasement of popliteal vascular bundle after previous tumor-wide resection and reconstruction with proximal tibia endoprosthesis. A wide resection "en bloc" of the lesion included part of the popliteal vessel. A bypass of both popliteal vessels, the vein with polytetrafluoroethylene (PTFE) prosthesis, and the artery with contralateral saphenous vein were performed to allow a limb salvage surgery. Local management of recurrent osteosarcoma in a previously reconstructed limb is highly individualized. This case confirms that preservation of lower limb function is possible using reconstruction techniques of bone and vessels in the sarcoma of the musculoskeletal system.

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