骨痂牵拉延长治疗下肢短缩21例体会

目的：促进延长段新骨的生长。方法：利用半环式外固定延长支架经胫骨干骺端骨痂牵拉延长，每天１ｍｍ的延长速度，在延长过程中，采用延长长度储备，继而主动轴向短缩加压。促进处长段骨痂的生长。结果：２１例胫骨延长３￣６ｃｍ，平均４．６ｃｍ，骨愈合时间４￣７个月，平均５．５个月。结论：骨痂牵拉及轴向短缩加压有效的促进了延长段骨痂的生长。

Experience in Shortening of Lower Limb Lengthening by Callus Distraction

Objective: To accerlerate the new bone formation in the lengthened area.Methods: Lower limbs were treated with sreminobicualr - crib external fixaor by distraction in the metaphysis of the tibia.The rate of distraction was 0. 5mm/12hours. During the lengthening, we took a new procedure of over - lengthenging of callus before waking it axial short - stressed.Results: 21 cases of shorteness of tibial length were increased postoperatively from a minimum of 3cm to a maximun of 6cm, with an average 0f 4. 6cm. Bony union occurrod in 4 to 7 menths, with an average of 5. 5 months. Conclusion: Lengthened callus activated by callotasis and axial shortening.