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首页> 外文期刊>Gait & posture >Range of motion and repeatability of knee kinematics for 11 clinically relevant motor tasks.
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Range of motion and repeatability of knee kinematics for 11 clinically relevant motor tasks.

机译：膝关节运动的运动范围和可重复性，可完成11种临床相关的运动任务。

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摘要

Standard gait analysis reports knee joint rotations in the three anatomical planes without addressing their different levels of reliability. Most clinical studies also restrict analysis to knee flexion-extension, because knee abduction-adduction and axial rotation are small with respect to the corresponding amount of measurement artefact. This study analyses a set of 11 motor tasks, in order to identify those that are adequately repeatable and that can induce greater motion at the knee than walking. Ten volunteers (mean +/- SD age: 29 +/- 9 years) each underwent three motion analysis sessions on different days with a standard gait analysis system and protocol. In each session they performed normal walking, walking with sidestep and crossover turns, ascent onto and descent off a step, descent with sidestep and crossover turns, chair rise, mild and deep squats, and lunge. Range and repeatability of motions in the three anatomical planes were compared by ANOVA. The sidestep turns showed a range of axial rotation significantly larger than that in walking (about 8 degrees ), while maintaining similar levels of repeatability. Ascent, chair rise, squat, and lunge showed greater flexion ranges than walking; among these, ascent was the most repeatable. The results show that turning increases knee axial rotation in young subjects significantly. Further, squats and lunges, currently of large interest in orthopaedics and sports research, have smaller repeatability, likely accounted for to the smaller constraints than in the traditional motor tasks.
机译：标准步态分析报告了三个解剖平面中膝关节的旋转，但未涉及其可靠性的不同级别。大多数临床研究也将分析限于膝关节屈伸，因为相对于相应的测量伪影量，膝关节外展内收和轴向旋转很小。这项研究分析了一组11个运动任务，以识别那些具有足够重复性并且可以在膝盖处引起比行走更大运动的运动。十名志愿者（平均+/- SD年龄：29 +/- 9岁）在不同的日子分别使用标准步态分析系统和方案进行了三次运动分析。在每节课中，他们进行正常的步行，侧滑和交叉转弯行走，爬上台阶和下坡，侧滑和交叉转弯下降，椅子抬高，轻度深蹲和弓步。通过ANOVA比较了三个解剖平面中运动的范围和可重复性。边步转弯显示的轴向旋转范围明显大于步行时的旋转范围（约8度），同时保持了相似的可重复性水平。上升，椅子上升，下蹲和弓步显示的屈曲范围比步行更大;其中，上升是最可重复的。结果表明，转弯明显增加了年轻受试者的膝盖轴向旋转。此外，目前在整形外科和体育研究中备受关注的深蹲和弓步的可重复性较小，与传统的运动任务相比，其局限性较小。

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