Fig 25 Repair of extensive injury left knee-joint region with complete bony ankylosis and a large bone cavity containing sequestra. Treatment: tubed pedicle flap repair from right flank via right wrist and right or healthy leg (this was necessary owing to the ankylosis of the left knee); preliminary attachment to cavity after removal of lining and dead bone; then the other end of the pedicle flap was attached below the cavity on the left leg; later the skin was removed from over the cavity leaving only the fat filling it, and a fresh skin covering made over this again; then final repair