摘要目的:介绍一种利用锁骨外侧锁定钢板间接复位、微创内固定治疗锁骨中段骨折的手术方法，并通过与切开复位重建锁定钢板固定方法对比，评价其临床应用疗效。方法:回顾分析2017年8月至2019年3月应用锁骨外侧解剖锁定型钢板间接复位微创固定治疗的锁骨中段骨折患者30例（微创治疗组），男22例、女8例；年龄（44.63±13.22）岁（范围14~65岁）；根据Robinson分型：2A2型9例、2B1型17例、2B2型4例；术前均无发现血管、神经损伤；受伤至手术时间（2.33±1.75）d（范围0~7 d）。选取同一术者以往采用切开复位重建锁定钢板固定治疗的锁骨中段骨折患者32例（切开治疗组）；男25例，女7例，年龄（42.63±14.18）岁（范围16~70岁），根据Robinson分型：2A2型6例、2B1型19例、2B2型7例，进行对照研究。研究项目包括切口长度、手术时间、术中出血量、透视次数、骨折复位情况、骨痂形成时间、肩关节Constant-Murley评分及相关并发症。结果:微创治疗组30例患者均完成了间接复位微创内固定治疗，手术时间（63.40±7.82）min（范围48~92 min），术中透视（4.83±1.58）次（范围3~8次），术中出血（15.67±4.13）ml（范围10~30 ml）；切开治疗组手术时间（56.22±10.11）min（范围42~80 min），术中透视（3.91±1.49）次（范围2~5次），术中出血（56.88±13.93）ml（范围40~100 ml）；两组在手术时间、透视次数及出血量方面均有差异（ P<0.05）。微创治疗组术前患侧与健侧相比锁骨长度短缩12.15%±2.69%（范围5.2%~15.1%），术后锁骨长度短缩0.45%±0.44%（范围-0.2%~1.6%），与切开治疗组术前锁骨长度短缩11.58%±2.67%（范围4.5%~16.1%），术后锁骨长度短缩0.62%±0.41%（范围-0.2%~1.2%）相比，差异无统计学意义（ P>0.05）。微创治疗组随访（11.3±2.8）个月（范围10~18个月），骨痂形成时间（3.57±0.90）个月（范围3~5个月）；切开组随访（11.8±2.2）个月（范围10~18个月），骨痂形成时间（4.27±1.12）个月（范围3~6个月）。术后6个月微创治疗组患者切口总长度（2.8±0.48）cm（范围2.5~4.0 cm），Constant-Murley评分（94.83±2.55）分（范围89~97分），所有患者均未出现锁骨下区域麻木或不适感，并对患肩的美观程度及功能表示非常满意；切开组切口长度（11.0±1.08) cm（范围10~14 cm），Constant-Murley（90.59±4.23）分（范围78~97分），9例患者出现锁骨下区域麻木，仅5例患者对术后瘢痕的美观程度表示满意；两组在骨痂形成时间、切口长度、Constant-Murley评分、锁骨下区麻木及患肩美观程度方面的差异均有统计学意义（ P<0.05）。 结论:利用锁骨外侧解剖型锁定钢板间接复位、经皮固定治疗锁骨中段骨折的术式，微创、术后恢复快、局部瘢痕小基本不影响肩部美观、肩关节功能好、患者的满意度高，临床疗效显著。

abstractsObjective:To introduce a new operative technique of mini-invasive plating of midshaft clavicle fractures with lateral clavicle anatomic locking plate and evaluate its clinical outcomes.Methods:From August 2017 to March 2019, 30 midshaft clavicular fracture patients were included in this study and retrospectively analyzed. There were 22 males and eight females with an average of 44.63±13.22 years (range 14-65 years). According to Robinson classification nine patients were classified as Type 2A2, 17 patients were classified as Type 2B1 and four patients were classified as Type 2B2. Before operation no symptoms of neurovascular injury was observed in this group. Operations were performed on an average of 2.33±1.75 d (range 0-7 d) after the injury. By comparing the injured clavicle lengths with the opposite healthy side pre and postoperatively on anteroposterior chest x-ray to evaluate the effect of indirect reduction. Shoulder function was evaluated using the Constant-Murley score at 6th month after the operation. Meanwhile, 32 patients with midshaft clavicular fracture treated with open reduction and internal fixation using clavicle reconstruction locking plate treated by the same group surgerons were compared in incision length, surgical duration, intraoperative fluoroscopy times, blood loss, fracture reduction, fracture healing time, Constant-Murley score and other complications. There were 25 males and seven females with an average of 42.63±14.18 years (range 16-70 years). According to Robinson classification six patients were classified as Type 2A2, 19 patients were classified as Type 2B1 and seven patients were classified as Type 2B2.Results:In mini-invasive group all patients were treated successfully with minimally invasive percutaneous osteosynthesis (MIPO) technique using lateral clavicle anatomic locking plate. The mean surgical duration was 63.40±7.82 minutes (range 48-92 min), The mean intraoperative fluoroscopy was 4.83±1.58 times (range 3-8 times). The mean blood lose was 15.67±4.13ml (range 10-30 ml). In open reduction group the mean surgical duration was 56.22±10.11 min (range 42-80 min), the mean intraoperative fluoroscopy was 3.91±1.49 times (range 2-5 times). The mean blood lose was 56.88±13.93 ml (range 40-100 ml). There was a significant difference in statistic by comparing surgical duration, intraoperative fluoroscopy times, blood loss ( P<0.05). In mini-invasive group the average proportional difference of the clavicular length was 12.15%±2.69% (range 5.2%-15.1%) preoperative and 0.45%±0.44% (range -0.2%-1.6%) postoperative comparing with the opposite healthy side, in open reduction group the average proportional difference of the clavicular length was 11.58%±2.67% (range 4.5%-16.1%) preoperative and 0.62%±0.41% (range -0.2%-1.2%) postoperative comparing with the opposite healthy side. There was no difference in statistic by comparing the fracture reduction in these two groups ( P>0.05). The mean follow-up period was 11.3±2.8 months (range 10-18 months) in mini-invasive group. Radiographic healing of the fracture was achieved at a mean time of 3.57±0.90 months (range 3-5 months). In open reduction group the mean follow-up period was 11.8±2.2 months (range 10-18 months), fracture healing time was 4.27±1.12 months (range 3-6 months), and there was significant difference in fracture union ( P<0.05). In mini-invasive group the mean total incision length was 2.8±0.48 cm (range 2.5-4.0 cm), no patient complained of numbness or paresthesia on subclavicular region or anterior chest wall, and all patients were satisfied with the cosmesis of the wounds and showed excellent shoulder joint function with a mean Constant-Murley score of 94.83±2.55 (range 89-97) at sixth month after the operation. In open reduction group the mean incision length was 11.0±1.08 cm (range 10-14 cm), 9 patients complained of numbness or paresthesia on subclavicular region or anterior chest wall, and only 5 patients were satisfied with the cosmesis of the wounds with a mean Constant-Murley score of 90.59±4.23 (range 78-97). There was a significant difference in statistic by comparing incision length, satisfactory cosmesis results, Constant-Murley score and paresthesia on subclavicular region ( P<0.05). Conclusion:Mini-invasive percutaneous plating of midshaft clavicle fractures with lateral clavicle anatomic locking plate is a good option for the treatment of midshaft clavicle fractures with satisfactory cosmesis results and excellent return to function.