Limb sparing procedures have become possible in many cases of tumor resections of the lower extremity by using the new free-tissue transplantation technique. In some cases the stump can be elongated. Forty-four patients were treated for soft tissue sarcoma of the lower extremity. In only one case conventional amputation was necessary. In all other cases the limb was saved by primary reconstruction. In four cases a distalisation of the stump was achieved.