Radical surgeries for treatment of scapular and pelvic girdle tumors (hemipelvectomy and interscapulothoracic amputation) are generally extended procedures, with large areas of local tissue loss after tumor resection. The use of a flap that includes all the anterior and posterior thigh musculature after femur dissection, pedicled in the superficial femoral vessels, has been described was only once in the medical literature, and there have been no reports on a similar flap using the whole anterior and posterior musculature of the arm after humerus dissection, pedicled in the subclavian vessels, for reconstruction after interscapulothoracic amputation. Here, we describe two cases - one hemipelvectomy and one interscapulothoracicl amputation - using these two the flaps to close the defect.