微创钢板固定技术治疗伴桡神经麻痹的肱骨干中下段骨折

目的 探讨用微创钢板固定(minimally invasive plating osteosynthesis, MIPO)技术治疗伴桡神经麻痹的肱骨中、下段骨折的可行性.方法 2003年4月-2006年10月,收治10例伴桡神经麻痹的肱骨干中、下段骨折患者.均为男性;年龄19～58岁.开放骨折2例,其中Gustilo Ⅱ型和Ⅲ型各1例.根据AO/ASIF分型,B1型4例,B3型2例,A2、A3、B2和C3型各1例.经上臂前侧远、近端小切口植入厚4.5 mm动力加压钢板,置于肱骨前方.于骨折部位另作外侧小切口,探查桡神经后复位骨折,螺钉固定.记录术后并发症、骨折愈合时间、桡神经功能恢复时间、肩关节和肘关节屈伸范围.采用UCLA肩关节和Mayo肘关节评分标准评价疗效.结果 10例患者切口均I期愈合.获随访9～36个月,平均15.7个月.X线片检查示,骨折均于12～16周愈合,平均13.6周.9例桡神经功能术后12～36周完全恢复,平均17.8周;1例尚在恢复中.肩关节外展150～170°,平均165°;肘关节活动范围130～140°,平均135.5°.根据UCLA评分标准,肩关节功能优9例,良1例;根据Mayo肘关节评分标准,10例患者肘关节功能均为优.结论 采用MIPO技术治疗伴桡神经麻痹的肱骨干中、下段骨折可获得良好效果.

TREATMENT OF MID-DISTAL HUMERAL SHAFT FRACTURES ASSOCIATED WITH RADIAL NERVE PIALSY USING MINIMALLY INVASIVE PLATING OSTEOSYNTHESIS TECHNIQUE

OBJECTIVE: To explore the possibility of treating mid-distal humeral shaft fractures associated with radial nerve palsies with minimal invasive plating osteosynthesis (MIPO) techniques. METHODS: From April 2003 to October 2006, 10 patients with mid-distal humeral shaft fractures associated with radial nerve palsies were treated. All patients were male, aged 19-58 years. According to AO/ASIF classification, there were 4 cases of B1 type, 2 cases of B3 type, 1 case of A2 type, 1 case of B2 type, 1 case of C3 type and 1 case of A3 type. A straight 4.5 mm dynamic compression plate was placed on the anterior aspect of humerus through two small incisions located on the anterior side of proximal and distal part of the arm. The radial nerve exploration was performed through a lateral small incision made on the fracture site. The fractures were then reduced by manual manipulation and the plate was fixated to the main fragments with 3 screws in each end of the plate. The postoperative complications, the bone healing time, and the recovery time of the radial nerve functions were recorded. The functions of the affected shoulder and elbow were assessed with UCLA and Mayo elbow performance score system respectively. RESULTS: All incision healed by first intention. Ten patients were followed up 9-36 months with an average of 15.7 months. The X-ray films showed that the union of fractures was achieved 12-16 weeks (13.6 weeks on average). The function of the radial nerves recovered completely 12-36 weeks (17.8 weeks on average) in 9 patients. The abductions of the affected shoulder were 150-170 degrees (165 degrees on average). The ROM of the elbows were 130-140 degrees (135.5 degrees on average). According to the UCLA shoulder scoring system, 9 patients achieved the excellent result and 1 patient achieved the good result. All the patients had the excellent results according to Mayo elbow performance score system. CONCLUSION: The mid-distal humeral shaft fractures associated with radial nerve palsies can be treated with MIPO technique and the good results can be obtained.