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Orthopaedic Proceedings
Vol. 86-B, Issue SUPP_I | Pages 66 - 66
1 Jan 2004
Perrin M Fraisse J Cuisenier J
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Purpose: Replacing the entire femur for primary bone tumour is exceptional. Prostheses used in this series were custom-made by Link using the Endo Klinik (Hambourg) model. These prostheses have adjustable ante-version and a hinge type knee with rotation.

Patients and Results: Case n° 1. A 15-year-old boy, grade 2A osteosarcoma in the diaphyseal zone of the lower femur. Rosen chemotherapy. En bloc resection. Total femur prosthesis sleeved onto the trochanteric mass left in place. Excellent response:100%. Excellent functional result: mountain climbing! Current status: recurrence-free, metastasis-free at 16 years follow-up. Case n° 2. Adult osteosarcoma. 68-year-old woman with pulmonary metastasis at diagnosis. Indication due to fracture to mid third of femur. Excellent immediate result. Nine-month survival in very satisfactory condition. Case n° 3. 72-year-old woman treated one year earlier for T1N0M0 breast cancer. Metastatic image in the trochanter. Treatment by curettage and THA. Histology reported chondrosarcoma. Scintigraphy showed uptake in gluteus medius and the lower part of the femur. En bloc resection of entire femur and gluteus medius. Total femur replacement with prosthesis sleeved onto an allograft. Complete resection. Current status: recurrence-free, metastasis-free at five years. No limitation on walking distance. Walks with cane due to moderate limp. Case n° 4. Adult osteosarcoma (32 years). Low-grade tumour (1B) occupying the entire femur. Rizzoli Institute chemotherapy protocol. Resection and total femur replacement with prosthesis sleeved onto an allograf. Complete resection. Poor response. Excellent functional result, persistence of minimal limp. Active tumour with pulmonary metastasis at one year and death at 1.5 yers. Case n° 5. Grade 2B osseous leiomyosarcoma in the diaphyseal zone of the lower femur in a 37-year-old woman. Neoadjuvant chemotherapy followed by total femur resection. Excellent responder:100%. Excellent functional outcome at short follow-up (1 year).

Discussion: Total femur replacement with a prostheses sleeved on an allograft allows reinsertion of the gluteus medius and the psoas. This method is reliable and avoids major instability. Complications in this small number of patients were rare and were not serious. The functional results have been excellent and appear to depend primarily on the importance of muscle resection required to achieve tumour resection.