Posterior hemiresection of the distal femur in parosteal osteosarcoma.

The writers describe the technique of posterior hemiresection in parosteal osteosarcoma of the distal femur by means of two incisions, medial and lateral. In not previously operated cases, this operation permits wide excision and offers a good guarantee of cure. The stability and mobility of the knee remain intact. The strength of the remaining bone can be increased by autoplastic and homoplastic bone grafts.