【摘要】 目的使用三维运动分析系统测量拇指分别与食指、中指、环指、小指对指以及单独最大对掌前后其腕掌关节的轴向旋转角度,并探讨其在临床中的应用。方法选取20名中性职业正常人群(男、女各10名)作为志愿者,用三维运动分析系统采集拇指分别与食、中、环、小指对指及拇指单独最大对掌前后各标志点的三维坐标值,通过高等数学的计算得出拇指对掌前后的旋转角度。结果拇指分别与食指、中指、环指和小指对指以及拇指单独最大对掌时,所有对掌动作的平均旋转角度分别为:29．1°(男性)、24．8°(女性),其最大旋转角度分别为:35．3°(男性)、28．8°(女性)。结论将基于视频的三维运动分析系统与高等数学紧密结合使得活体测量拇指腕掌关节的轴向旋转角度成为可能,从而首次对拇指对掌时其腕掌关节的旋转角度进行了精确测量。该测量结果为临床拇指腕掌关节融合时旋转角度的确定及腕掌关节炎的诊疗及康复提供了可靠的参数。更多还原

【Abstract】 Objective To measure the axial rotation angles of the carpometacarpal joints during the digital opposition of thumb-index finger, thumb-medial finger, thumb-ring finger, thumb-little finger and the thumb’s maximal opposition, then the application of these parameters were studied. Methods Twenty neutrality-occupation volunteers (female 10, male 10) with no history of hand injuries or related diseases were involved in the study. First, all the markers’ 3-D coordinates were obstained using the 3D motion analysis system (EVaRT4. 1) during the digital opposition movements of thumb. Then, the axial rotation angles were calculated. Results The average rotation angles of carpometacarpal joints during all kinds of digital oppositions were 29. 1°±9. 4°(male)、24. 8°±10. 2°(female) , while the maximal rotation angles are; 35. 3°(male)、28. 8°(female). Conclusions The combination of video-based 3-D analysis system and mathematics make it possible to measure the axial rotation angles of thumb in vivo, as a result, the rotation angles of thumb carpometacarpal joints are measured precisely for the first time. These results can provide a few parameters for treatment and rehabilitation of carpometacarpal arthrositis.更多还原