国人胫骨平台内翻角的测量及其临床意义
全膝关节置换,,全膝关节置换；,胫骨平台；,机械轴线；,内翻角测量,1资料和方法,2结果,3讨论,参考文献：
目前人工膝关节置换术(Total Knee Arthroplasty，TKA)中，冠状面上胫骨侧都采用垂直截骨，为了代偿由此所致的胫骨侧非对称截骨，需将股骨假体适度外旋位放置，以后髁轴为参照，其外旋角度等于胫骨平台内翻角。临床术中作者发现参照国外300°的标准进行手术时常常出现股骨假体外旋不足所致的一系列并发症，考虑到人种间的区别可能导致的细致解剖上的差异，因而设计了该课题，通过对正常国人X线片的测量，得出其胫骨平台内翻角的数值，为人工膝关节置换术时国人股骨假体的外旋放置角度提供参照。[方法]200例青年健康志愿者摄双侧小腿全长正位片，用Auto CAD软件分别测量小腿机械轴垂直线与胫骨平台面切线(PT角)及双侧股骨髁远端切线的夹角(FT角)。[结果]正常国人的平均PT角为406°，FT角为500°，均明显大于国外的的参考值。[结论]国人TKA手术以股骨后髁轴为参照时，后髁的外旋截骨角度应>300°放置，以500°为宜，以获得满意的股骨假体的外旋放置。关键词：全膝关节置换； 胫骨平台； 机械轴线； 内翻角测量
Measurement of verus inclination of the proximal tibia of Chinese and its relevance in TKA∥TAO Kun, WU Haishan,CHU Xiaobing,et al.Department of Orthopaedics,Changzheng Hospital,Shanghai 200003
Abstract：[Objective]To measure the verus inclination of the proximal tibial of young Chinese through radiographs and determine how many degrees should the femoral prothesis be externally rotationed during total knee arthroplasty(TKA).[Method]Standardized anteroposterior radiographs of the entire lower legs of 200 volunteers' were taken. Two angles were measured as followes:Angle PT: angle between tibial articular margins and a line perpendicular to the tibial mechanical axis;Angle FT:angle between the transcondylar tangent anda line perpendicular to the tibial mechanical axis. [Result]Angle PT has a mean value of 406° and Angle FT is 500°. [Conclusion]When the posterior condylar axis is used during TKA for Chinese, the femoral prothesis should be externally rotationed 500° to get the optimum rotational orientation. ......
您现在查看是摘要页，全文长 11736 字符。