Hind quarter amputation.
D000671:Amputation, Surgical; D005266:Femoral Neoplasms / Q000601:surgery*; D006615:Hip / Q000601:surgery*; D006801:Humans; D007866:Leg / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012516:Osteosarcoma / Q000601:surgery*