Fig. 2.

Schematic diagram of the protocol of acute-shortening and bone transportation combined with internal fixation(Surgical technique1). A Patient’s humorous with the distal humeral defect; B A unilateral frame(Orthofix) combined with an internal fixation plate is installed after acute-shortening of the defect site and proximal humeral osteotomy is carried out; C New callus generated after gradual bone transport, the longitude of the humerus is restored; D The external frame is removed after the bone lengthening period finished