This paper outlines our experience of partial pelvic resection for benign tumours or those of low grade malignancy. The entire half of the pelvis may be removed with preservation of the limb. Pelvic resection must only be undertaken when the surgeon is sure that the removal of the tumour will be as radical as in an inter-ilio abdominal amputation. Various methods of creating rest for the superior end of the femur against the remaining parts of the pelvic bones are shown. Special attention is devoted to preservation of the limb movement and restoration of the locomotor function of the leg.