PDF(Pubmed)
Abstract：
The interaction among joints of the midtarsal complex and subtalar joint is important for locomotor function; however, its complexity poses substantial challenges in quantifying the joints\' motions. We determine the mobility of these joints across locomotion tasks and investigate the influence of individual talus morphology on their motion. Using highly accurate biplanar videoradiography, three-dimensional bone kinematics were captured during walking, running and hopping. We calculated the axis of rotation of the midtarsal complex and subtalar joint for the landing and push-off phases. A comparison was made between these rotation axes and the morphological subtalar axis. Measurement included total rotation about and the orientation of the rotation axes in the direction of the subtalar joint and its deviation via spatial angles for both phases. The rotation axes of all three bones relative to the talus closely align with the morphological subtalar axis. This suggests that the midtarsal and subtalar joints\' motions might be described by one commonly oriented axis. Despite having such an axis, the location of the axes and ranges of motion differed among the bones. Our results provide a novel perspective of healthy foot function across different sagittal plane-dominant locomotion tasks underscoring the importance of quantifying midtarsal complex and subtalar motion while accounting for an individual\'s talus morphology.
摘要：
tal中复合体和距骨下关节之间的相互作用对于运动功能很重要；但是，它的复杂性在量化关节运动方面带来了巨大的挑战。我们确定了这些关节在运动任务中的活动性，并研究了各个距骨形态对其运动的影响。使用高度精确的双平面影像摄影，在行走过程中捕获了三维骨骼运动学，跑步和跳跃。我们计算了着陆和推离阶段的the中复合体和距骨下关节的旋转轴。在这些旋转轴和形态距骨轴之间进行了比较。测量包括绕着距骨下关节方向的总旋转和旋转轴的方向，以及两个阶段通过空间角度的偏差。所有三个骨骼相对于距骨的旋转轴与形态距下轴紧密对齐。这表明，中和距骨关节的运动可以用一个共同取向的轴来描述。尽管有这样的轴，骨骼之间的轴位置和运动范围不同。我们的研究结果为不同矢状面主导的运动任务提供了健康的足部功能的新颖视角，强调了在考虑个体距骨形态的同时量化中骨复合体和距骨下运动的重要性。
