Limb Salvage Surgery With Mega-Prosthesis in a Case of Chondrosarcoma: A Case Report

Chondrosarcoma is a kind of bone tumor that can be anywhere in the body but most commonly affects the pelvis, glenohumeral joint, proximal femur, and proximal one-third of the tibia including condyles. It accounts for 20-25% of all bone sarcomas. Chondrosarcomas with clear cell variants are extremely uncommon, making up just around 6% of all cases. We are presenting a case of a 52-year-old male with a bony lesion over the epiphysis of the left tibia. He was managed with resection of the tumor followed by a limb salvage procedure with mega-prosthesis. Chondrosarcoma affects men in the third to fourth decades of their life more commonly than females. Long-standing localized pain over a prolonged duration is the most common presenting symptom. There are various treatment modalities available for clear cell chondrosarcoma, ranging from wide local resection and intralesional therapy to amputation. The decision of tumor resection followed by prosthesis was chosen over amputation here, as the patient had the lesion for 2 years and there were no signs suggestive of metastasis after thorough screening. Limb salvage gave a better outcome for the patient in our study. A large-segment prosthesis is a suitable reconstructive alternative to amputation. At the majority of the anatomical sites where the prosthesis was employed, the functional results were good or exceptional after this type of treatment. The patient now has a functional limb and is able to resume his life as before, making mega-prosthesis a better alternative and treatment of choice for patients with large lesions.