摘要：目的 探讨AO新型2.4 mm锁定内固定系统治疗不稳定型桡骨远端骨折的临床疗效.方法 2007年5月至2008年10月,应用AO 2.4 mm锁定内固定系统治疗115例(120侧)小稳定型桡骨远端骨折患者,其中5例为双侧骨折.骨折按AO分型:A型35侧(A2型7侧,A3型28侧),B型15侧(B1型3侧,B2型8侧,B3型4侧),C型70侧(C1型42侧,C2型20侧,C3型8侧).开放伤110例,按Gustilo-Anderson分型:Ⅰ型6例,Ⅱ型4例.采用单纯掌侧锁定加压钢板(LCP)固定78侧,单纯背侧LCP固定16侧,背侧加桡背侧联合固定26侧.结果 98例患者获得随访,其中3例为双侧骨折患者,随访率为84.2%.随访时间为6～15个月,平均8个月.X线片示所有患者骨折均达到骨性愈合,无术后感染、内固定松动、背侧肌腱激惹、正中神经刺激症状发生.患者腕关节活动度平均为背伸54°,掌屈58°,旋前72°,旋后760°.根据Sarmiento改良的Garland & Werley评分方法评定疗效:优55侧,良32侧,可14侧,优良率为86.1%.结论 AO 2.4 mm锁定内固定系统可为多种类型的桡骨远端骨折提供个体化的内固定选择,且骨折复位、固定满意,患者腕关节功能预后良好.

 

Abstract：Objective To observe the clinical outcome of AO 2.4 mm locking plate system used for unstable distal radius fractures. Methods From May 2007 to October 2008, 115 patients (5 cases of both sides) with unstable distal radius fractures were managed by AO 2.4 mm locking plate system. There were 35 fractures of type A, 15 type B and 70 type C according to AO classification. Of them, 10 fractures were open, with 6 of type 1 and 4 of type 2, according to Gustilo-Anderson Classification. Volar plating was conducted in 78 cases, dorsal plating in 16 cases and dorsal + radial plating in 26 cases. Results Ninety-eight patients (3 cases of both sides) were followed up for an average of 8 (range, 6 to 15) months. The follow-up rate was 84.2%. Radiographic bone union was achieved in all cases without infection, implant loosening, or tendon and median nerve irritations. The average ROM was 54°, 58°, 72°, and 76° for dorsi-extension, palmer flexion, pronation and supination respectively. According to Gartland & Werley Scores modified by Sarmiento, there were 55 excellent cases, 32 good and 14 fair, with an excellent to good rate of 86.1%. Conclusion AO 2.4 mm locking plate system can offer individualized fixation regimen for unstable distal ra-dius fractures, leading to satisfactory fracture reduction and fixation with predictable clinical outcomes.