Bone loss treated with TK-IIizarov Fixator. (a) Distal defect in the tibia; TK-IIizarov Fixator in place. Proximal metaphyseal osteotomy. (b) Middle segment moved distally until docking occurs. Optional additional lengthening proximally if indicated. Caution: Where lengthening is involved, resect at least 1 cm of fibula.