Objective To investigate the clinical efficacy of lengthening osteotomy for leg bone defect. Methods The clinical data of 22 patients who received lengthening osteotomy for leg bone defect from February 2005 to March 2011 were retrospectively analyzed. Operative methods were designed according to the patients' general condition, condition of fracture nonunion and bone defect accompanied by osteomyelitis. They included Z-shaped, oblique, and cortical bone osteotomy The modified Ilizarov external fixator was used after osteotomy. Bone lengthening was performed 1 week after the operation, and the lengthening rate was 0.5-lmm/d. Results The bone defects achieved bone union in the 22 patients by fixation and lengthening for 3-10 months (8 months on average); followed by external fixation for 6 months to achieve clinical union. The follow-up period for all the patients ranged from 12 to 15 months, and remediable complication was found in 2 patients (l mild, 1 moderate), and no irredeemable complication was observed. Conclusions Lengthening osteotomy is safe, reliable, and easy to operate. Furthermore postoperative nursing care is simple and complications are less, thus it is an ideal surgical method for leg bone defect.%目的 探讨截骨延长术治疗小腿骨缺损的临床效果.方法 回顾性分析2005年2月-2011年3月收治的行截骨延长术治疗小腿骨缺损的22例患者的临床资料,术前根据患者一般状况及相关检查明确骨折不愈合及骨缺损伴骨髓炎状况,设计手术方法,行“Z”形、斜形、骨皮质低能截骨术等,安装改良Ilizarov支架.术后1周行骨延长,延长速度为0.5～1.0mm/d,分4次完成.结果 经3～10个月(平均8个月)固定延长至骨缺损端会合,继续外固定6个月达临床愈合.经12～15个月的随访,无不可逆并发症发生,2例发生可逆并发症,皆为轻中度.结论 截骨延长术操作简便,安全可靠,术后护理简单,并发症少,是一种治疗小腿骨缺损的理想术式.
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