Home » Bones » Femur » Tumors of the Proximal Femur Tumors of the Proximal Femur - Diff Dx: - Osteosarcoma - Osteochondroma - Fibrous Dysplasia - Ewing's sarcoma: - Osteoid Osteoma - Eosinophilic granuloma - Aneurysmal bone cyst - Simple bone cyst - Chondrosarcoma: - Fibrous Histiocytoma - Fibrosarcoma of bone; - Breast cancer Hip rotationplasty for malignant tumors of the proximal part of the femur. Reconstruction for defects of the proximal part of the femur using allograft arthroplasty. Stabilization and prosthetic replacement in difficult fractures and bone tumors. Total femoral replacement. Treatment of benign lesions of the femoral head and neck. Metastatic bone disease. A study of the surgical treatment of 166 pathologic humeral and femoral fractures. Modified Van Nes rotationplasty in the treatment of malignant neoplasms in the lower extremities of children.