双轴重合法胫骨干骺端截骨骨延长术

目的：探讨双轴重合法在骨延长术中的应用。方法：回顾性分析54例应用双轴重合法胫骨干骺端截骨骨延长术进行治疗的肢体，其中小儿麻痹症后遗症26例，创伤后双下肢不等长13例，软骨发育不全4例，遗传性矮身材6例，骨斑点病合并双下肢不等长1例，垂体性侏儒症4例。男28例，女26例；平均年龄22岁。所有患者均采用半环形双槽外固定架固定肢体并延长。结果：术后随访18-45个月，平均24．5个月。所有患者均得到肢体延长，延长幅度5—12cm，平均6．2cm。单纯足下垂1例，足下垂合并足外翻2例，较严重针孔感染l例，骨延迟愈合1例。结论：应用双轴重合法胫骨干骺端截骨骨延长术后遗症明显减少，其中骨性并发症减少尤其明显．并降低了手术操作要求，是比较理想的骨延长方法。

Two-axis parallel method for tibial lengthening by metaphyseal osteotomy

Objective: To study the two-axis parallel method in bone lengthening. Methods: Among 54 patients(male 28, female 26,mean age 22)who performed tibial lengthening by metaphyseal osteotomy using two-axis parallel method,26 patients were poliomyelitis sequelae,13 patients were inequality in limb length after trauma,4 patients were achondroplasia,6 patients were genetic short stature,1 patient was maculatum disease complicated with leg length discrepancy,4 patients were pituitary dwarfism. Results: All the patients were followed up and the duration ranged from 18 months to 45 months,with an average of 24.5 months. All patients had bone lengthened. The maximum increase of limb length was 12 cm and the minimum increase was 5 cm,averaged 6.2 cm. One patient had foot drop,2 patients had foot drop complicated with strephexopodia,1 patient had serious pinhole infection,and 1 patient had delayed union of the bone. Conclusion: The two-axis parallel method tibial lengthening by metaphyseal osteotomy can reduce postoperative complications and simplify the operative procedure,which is an ideal method for bone lengthening.