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  • Title: [Application of shortened replantation combined with limb lengthening in treatment of severe amputation of middle and distal lower leg].
    Author: Xie S, Hou J, Dong Q, Zhang H, Wang H, Yang C.
    Journal: Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi; 2017 Aug 15; 31(8):936-940. PubMed ID: 29806429.
    Abstract:
    OBJECTIVE: To investigate the effectiveness and technical points of shortened replantation combined with limb lengthening in the treatment of severe amputation of middle and distal lower leg. METHODS: Twelve cases of severe amputation of middle and distal lower leg were treated with shortened replantation at the 1st stage and limb lengthening at the 2nd stage between April 2009 and May 2016. There were 9 males and 3 females with an average age of 28 years (range, 16-32 years). The injury causes included traffic accident injury in 4 cases, heavy pound injury in 6 cases, and machine crush injury in 2 cases. The interval from injuries to treatment ranged from 30 minuts to 6 hours (mean, 3 hours and 12 minutes). All of 12 cases, 6 cases were completely amputated in the right middle and distal lower leg, 4 were not completely amputated in the left middle and distal lower leg, and 2 were ankle amputations. The limbs were 4.0-12.5 cm shorter than the contralateral sides, with an average of 7.3 cm. Limb lengthening was performed at 1.5-8.0 months after replantation and the time of extension was 1.7-5.3 months (mean, 3.1 months). RESULTS: All 12 patients recovered the same lengths of both lower extremities after shortened replantation and limb lengthening. The lengthened segments gained good bone mineralization, bony union was achieved at lengthened segments and broken end of fracture at 7-16 months (mean, 11.3 months). All patients were followed up 6 months to 5 years (mean, 2 years and 5 months). The range of motion of the knee joint were 0-5° (mean, 3°) in hyperextension and 110-140° (mean, 120°) in flexion. Except for 2 cases of ankle arthrodesis, plantar flexion angles were 15-45° (mean, 26°) and dorsiflexion angles were 10-25° (mean, 15°) in the other cases. The plantar sensation was restored to the S 3 + level in 4 cases, S 3 level in 6 cases, and S 2 level in 2 cases. At last follow-up, the affected limb function were excellent in 7 cases, good in 3 cases, fair in 2 cases according to Kofoed functional evaluation criteria. CONCLUSION: It expanded indications for replantation of lower limb amputation, reduced the operation difficulty and trauma with shortened replantation combined with limb lengthening in the treatment of severe amputation of middle and distal lower leg. 目的: 探讨短缩再植结合肢体延长技术治疗小腿中下段严重离断伤的临床疗效和技术要点。. 方法: 2009 年 4 月—2016 年 5 月，采用一期短缩再植二期延长技术治疗小腿中下段离断伤 12 例。其中男 9 例，女 3 例；年龄 16～32 岁，平均 28 岁。致伤原因：交通事故伤 4 例，重物砸伤 6 例，机器挤压伤 2 例。受伤至就诊时间为 30 min～6 h，平均 3 h 12 min。其中右小腿中下段完全离断 6 例，左小腿中下段不全离断 4 例，左踝关节平面完全离断 2 例。肢体短缩 4.0～12.5 cm，平均 7.3 cm；再植术后 1.5～8.0 个月行肢体延长术，延长时间 1.7～5.3 个月，平均 3.1 个月。. 结果: 12 例短缩再植后再延长均达到双下肢等长，术后延长段骨矿化良好，骨断端和延长骨段均达骨性愈合，愈合时间 7～16 个月，平均 11.3 个月。所有患者均获随访，随访时间 6 个月～5 年，平均 2 年 5 个月。膝关节活动范围：过伸 0～5°，平均 3°；屈曲 110～140°，平均 120°。除 2 例踝关节融合外，其余患者跖屈 15～45°，平均 26°；背屈 10～25°，平均 15°。足底感觉恢复至 S 3 + 4 例，S 3 6 例，S 2 2 例。末次随访时根据 Kofoed 功能评定标准评价，获优 7 例，良 3 例，可 2 例。. 结论: 通过短缩再植结合肢体延长技术治疗小腿中下段严重离断伤，扩大了下肢离断再植适应证，降低了再植难度，治疗更简便有效。.
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