摘要
目的探讨一种新型的定量分析拇指指尖三维运动的方法，揭示拇指指尖的运动规律。方法应用三维运动分析系统的标志点放置于25名正常受试者拇指指尖和大多角骨上，固定腕关节和其他4指，拇指做最大和最小环转运动，记录运动中拇指指尖和大多角骨的三维空间坐标数据，重建拇指指尖最大工作空间，计算该最大运动空间体积。以上过程分三个不同测试日完成。结果重复实验的最大运动空间体积组间相关系数为0．902，变异系数为4．74％。平均拇指指尖工作空间体积男性组为131126．4mm^3，女性组为96414．16mm^3。回归分析方程男性组为V=0．0491^3＋7．7061^2，女性组V=0．0521^3＋7．2581^2。决定系数为0．98。结论应用三维运动分析系统测量拇指指尖运动是一种定量、精确、可行的方法。拇指总长立方与拇指腕掌关节工作空间体积存在线性回归关系。
Objective To explore a novel quantitative method which can be used to analyze diverse three-dimensional thumb tip motions. Methods Twenty-five normal subjects were enrolled in this ex- periment. The markers of the three-dimension motion analysis system were affixed to their thumb tips and trapezium bones. With the wrist and the other 4 fingers fixed, three-dimensional coordinates of the moving thumb tips and trapezium bones were recorded when the subjects were asked to actively execute maximal and minimal circumduction of the thumb tip. Maximal movements of the thumb tips were reconstructed to calculate their maximal volumes of workspace. All experiments were repeated in 3 separate testing days. Results In the test-retest, the interclass correlation coefficient and coefficient of variation of the volume of trapeziometacarpal （TMC） joint were 0.902 and 4. 74% respectively. The mean volume of the workspace of the thumb tip was 131126.4 mm^3 and 96414. 16 mm^3 respectively. Regressive function expressed V = 0.0491^3 ＋ 7. 7061^2 for male groups, V=0.0521^3＋7. 2581^2 for female groups, and determinate coefficient （R2） was 0.98. Conclusion It is quantitative, accurate, and feasible to measure thumb tip motion with this three-dimensional motion analysis system. Curve regressive relation exits between the volume of the workspace of the thumb tip and the total thumb length.
出处
《中华创伤骨科杂志》
CAS
CSCD
2008年第3期266-269,共4页
Chinese Journal of Orthopaedic Trauma
