Fig. 1

39-year-old male patient with posttraumatic osteomyelitis of the left femur was treated with trifocal bone transport from both side to docking site using Orthofix external fixator. a X-ray graph before treatment. Lesions on the sides of the middle and lower part of the femur. b After debridement, the bone defect reached almost 14 cm. The Orthofix external fixator was used to perform the distal and proximal biplane osteotomy. c The X-ray graphs at 40 days after surgery. The force line was available. d At 80 days, the butt joint healed. Regeneration zone growing well. e Bone healing of the osteotomy line was evident at 8 months. f X-ray film after removing the external frame at last follow-up