Explore the method of repairing bone defect after resection of lower extremity long bone structure fiber

Objective To analyze the repair methods of bone defects caused by the harmful removal of lower extremity long bone segmental bone fibrous structure, and to provide reference for clinical treatment. Methods Six cases of patient with adverse fibrous structure,3 cases with the jnjury of backbone of the tibia and 3 cases of femoral shaft damage were conducted as the research objects.Bone defect length after tumor resection was(17.3±4.2)cm,in order to coinside with the peroneal vessels in the other side, fibulas with peroneal vessels from both sides should be cut down.Dual fibula medial periosteal was stripped from the central longitudinal incision to the bone crest,folding fibula two-stage to make the front sides face to face, and then fixed the ends.The peroneal vascular was looped on one side of graft to form a U shape. The vessels out of damage region was dissected, and was inserted fibula between the ends of fracture, as the case wire or screws may be used.The peroneal vessels had to coinside with those in damage region,and imaging assessment should be taken to evaluate the healing of bone joints after surgery,at the same time,assessing postoperative function by functional scores of Bone Cancer Society of the United States was also neccessary, finally vascular anastomosis through the bleeding condition of the grafts were detected. Results All patients were followed up for 5-8 years,the bone healed 1 year later, and the transplanted bone marrow cavity got recanalization 5 years later,at the same time, there was no tumorigenesis in the double fibula, and x-ray showed the good healing. All bones turned to be normal ones without nonunion, infection and other complications. Final follow-up score of lower limbs was 91.2%. Conclusion It is effective and feasible to use a combination of double fibula to repair lower extremity long bone defects caused by large bone fibrous dysplasia in the periosteum. Key words: Fibrous dysplasia of bone; Bone defect; Bone transplantation operation