摘要目的 通过与常规手术比较,探讨计算机快速成型辅助个体化治疗三踝骨折的效果.方法 2007年3月至2008年3月收治二踝骨折患者24例,随机分为两组,计算机快速成型辅助设计手术组(A组)12例,常规手术组(B组)12例.A绀手术前采取CT三维重建、计算机模拟、快速成型与个体化标本预手术.比较两组的切开暴露时间、复位与固定时间及手术疗效优秀率.结果 所有患者术后随访8～15个月.两组切开暴露时间差异无统计学意义(t=-1.06,P=0.102);A组手术复位与固定时间为(45.43±9.38)min,低于B组(58.61±12.32)min,差异有统计学意义(t=-2.948,P<0.05);A组于术疗效优秀率为83.3%,B组手术疗效优秀率为66.7%.结论 计算机快速成型辅助个体化技术可提高三踝骨折手术效率与精确度.

abstractsObjective To compare the operation with computer-aided rapid prototyping technique and the conventional procedure for treatment of trimalleolar fractures.Methods Twenty-four patients with trimalleolar fracture who had been admitted to our hospital from March 2007 to March 2008 were divided into 2 even groups randomly.Group A underwent 3-dimensional reconstruction, computer simulation and rapid pro-totyping and demonstration of individual fracture model before operation.Group B received only conventional procedures.The therapeutic effects were evaluated by Cedell criteria and compared statistically between the 2 groups.Comparision between the 2 groups was made in the exposure time, reduction and fixation time curative effect.Results Fallow-up from 8 to 15 months revealed that the operation time for Group A (45.43 ± 9.38 minutes) was significantly shorter than for Group B (58.61 ± 12.32 minutes) (t = - 2.948, P < 0.05).The exposure time between the 2 groups had no statiscal difference (t = - 1.06, P =0.102).The excellent rate of curative effect in Group A was 83.3% and 66.7% in Group B.Conclusion Computer aided rapid prototyping can shorten the operation time and improve operational efficiency for trimalleolar fractures.