In Vivo Kinematics of the Tibiotalar and Subtalar Joints in Asymptomatic Subjects: A High-Speed Dual Fluoroscopy Study
In Vivo Kinematics of the Tibiotalar and Subtalar Joints in Asymptomatic Subjects: A High-Speed Dual Fluoroscopy Study
复制标题
DOI：
10.1115/1.4034263
复制
发表时间：
2016-09-01
影响因子：
1.7
通讯作者：
Anderson, Andrew E.
中科院分区：
文献类型：
--
作者：
Roach, Koren E.;Wang, Bibo;Anderson, Andrew E.
关节运动学的测量对于了解踝关节疾病的病理机制和治疗效果至关重要。传统的运动捕捉技术不提供独立的胫距和距下关节运动的测量。在这项研究中，10名无症状的成年人在0.5 m/s和1.0 m/s的跑步机行走和单腿平衡脚跟上升期间获得高速双透视图像。每个骨骼的三维（3D）CT模型和双重荧光透视图像用于量化胫距和距下关节的体内运动学。动态胫距和距下平均关节角往往表现出相反的趋势，在捕获的立场。在两种速度的步行，胫距关节有显着更大的背/跖屈（D/P）角ROM比距下关节，而距下关节表现出更大的内翻/外翻（在/Ev）和内/外旋（IR/ER）比胫距关节。平衡上提时，胫距关节与距下关节之间只有D/P和In/Ev有显著差异。以0.5 m/s的速度行走时，距下关节的前/后（AP）方向平移ROM显著大于胫距关节。总的来说，我们的研究结果支持长期以来的信念，胫距关节是主要负责D/P，而距下关节促进在/Ev和IR/ER。然而，距下关节提供了相当大的D/P旋转，胫距关节绕所有三个轴旋转，这沿着平移运动，表明每个关节都经历了复杂的3D运动。
Measurements of joint kinematics are essential to understand the pathomechanics of ankle disease and the effects of treatment. Traditional motion capture techniques do not provide measurements of independent tibiotalar and subtalar joint motion. In this study, high-speed dual fluoroscopy images of ten asymptomatic adults were acquired during treadmill walking at 0.5 m/s and 1.0 m/s and a single-leg, balanced heel-rise. Three-dimensional (3D) CT models of each bone and dual fluoroscopy images were used to quantify in vivo kinematics for the tibiotalar and subtalar joints. Dynamic tibiotalar and subtalar mean joint angles often exhibited opposing trends during captured stance. During both speeds of walking, the tibiotalar joint had significantly greater dorsi/plantarflexion (D/P) angular ROM than the subtalar joint while the subtalar joint demonstrated greater inversion/eversion (In/Ev) and internal/external rotation (IR/ER) than the tibiotalar joint. During balanced heel-rise, only D/P and In/Ev were significantly different between the tibiotalar and subtalar joints. Translational ROM in the anterior/posterior (AP) direction was significantly greater in the subtalar than the tibiotalar joint during walking at 0.5 m/s. Overall, our results support the long-held belief that the tibiotalar joint is primarily responsible for D/P, while the subtalar joint facilitates In/Ev and IR/ER. However, the subtalar joint provided considerable D/P rotation, and the tibiotalar joint rotated about all three axes, which, along with translational motion, suggests that each joint undergoes complex, 3D motion.