具有闭合整复功能的胫腓骨骨折外固定架研制与应用

目的研制新型具备闭合整复胫腓骨骨折功能的外固定架。方法外固定架采用硬塑材料,主要构成为内部装有多组齿轮和蜗杆系统的复位环,侧方移位调整架,前后移位调整架及四根带螺纹的连接杆组成全环型骨折整复固定系统。通过手柄驱动齿轮,带动复位环、调整架及水平穿过骨端的复位针对移位的骨折端实施三维六个自由度的整复,多组位置可调的半环型固定臂锁卡于连接杆相应位置与交叉穿过骨端的骨针连接完成整复后的固定。结果临床应用该装置完成胫腓骨骨折闭合整复固定32例,基本达到解剖复位,愈合良好。结论所研制的胫腓骨骨折闭合整复外固定架具备很好的整复及固定功能,为胫腓骨骨折闭合复位治疗提供了很好的方法。

A study on application of an external fixator for close reduction of tibial fractures

Objective To design and manufacture an external fixator for close reduction of fibu la and tibial fractures.Methods The all-ring reduction and fixation system made of duroplasts comprises three main parts:two reduction rings with gears and worms,two modulation frames to correct lateral or anteroposterior re-placement,and four connecting rods.By cranking the handle,the gears wi ll be driven,which may in turn shift t he modulation frame,then the needle co nnecting the bone with the frame can s hift the fracture ends in three dimen sions and six freedom degrees.After reduction,the fracture is fixed by the cro ssed needles linked to several groups of half-ring fixation arms,which can b e shifted and locked onto the linking rod properly.Results The apparatus was used in 32patients.All cases got anatomic reduction,and the curativ e ratio was 100%.Conclusion The external fixator for close reductio n of tibial and fibula fractures has g ood reduction and fixation effect,a nd the design provides a very good clinical therap eutic method for close reduction of t ibial and fibula fractures.[