新型局限性腕舟骨、大、小多角骨融合器的研制  

A new type of fusion apparatus of seaphoid-trapezium-trapezoid for limited interearpal arthrodesis

作　　者：刘璠[1] 蔡玉辉[1] 

机构地区：[1]江苏南通大学附属医院骨科,226001

出　　处：《中华创伤骨科杂志》2006年第8期710-712,共3页Chinese Journal of Orthopaedic Trauma

基　　金：江苏省"135"工程重点医学人才基金资助(RC2003-101)

摘　　要：目的研发新型腕舟骨、大、小多角骨(STT)融合器。方法根据所测国人STT三关节有关数据设计草图,先选用钛合金制出粗样,然后置入尸体腕模拟STT局限性融合,修改后制作成品。结果STT融合器分钢板与螺钉两部分：钢板部分由锥形板及相连的圆桶状结构组成,锥形板开有3个螺钉孔,各通过1枚松质骨螺钉与3块腕骨分别固定；圆桶状结构连接于锥形板下方,中空,可供植骨,外侧面制有螺纹与腕骨紧密咬合。同时还制作了配套工具。结论STT融合器设计合理,它可使3块腕骨间的固定力学强度大大提高,并可防止STT融合体向关节中心旋转及塌陷,是局限性腕骨融合术中新型、可靠的内固定方式。Objective To develop a new type fusion apparatus for scaphoid-trapezium-trapezoid （STT） arthrodesis. Methods The apparatus was designed on the basis of the anatomic data of STT measured from Chinese cadaveric wrists. Simulated arthrodeses of STT joints were conducted to test the fixation performance of the apparatus made of titanium alloy on the STT joint specimens. Several modifications were made before the apparatus was made into a finished product. Results The fusion apparatus consists of a plate and screws. The fusion plate for STT arthrodesis is made into a taper one connected to a cylinder. On the plate are three screw holes through which the three carpal bones （STT） are fixed by three screws respectively. The hollow cylinder is designed for bone grafting, and its outer threads ensure a very tight contact between the fusion plate and the carpal bones. Auxiliary tools are also made. Conclusions As the novel design of the fusion apparatus improves the mechanical strength of fixation of STT and prevents the possible rotation and collapse of fused STT, the apparatus is a reliable internal fixation device for the limited intercarpal arthrodesis.

关 键 词：腕舟骨、大 、小多角骨 融合器 新型内固定 

分 类 号：TH789[机械工程—仪器科学与技术]