In-Vivo Kinematics of the Tibiotalar and Subtalar Joints in Asymptomatic Subjects with Application to Chronic Ankle Instability:

Foot & Ankle Orthopaedics

Koren E.Roach¹ 

关键词: Dual fluoroscopy;    tibiotalar joint;    subtalar joint;    kinematics;    in vivo;    chronic ankle instability;   

DOI  :  10.1177/2473011416S00201

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:AnkleIntroduction/Purpose:Measurements of joint angles and translations (i.e. kinematics) are essential to understand the pathomechanics of ankle disease and functional changes following treatment. Traditional motion capture techniques, which track the positions of reflective markers adhered to the skin, cannot measure motion of the tibiotalar and subtalar joints independent of one another. To overcome this limitation, we used high-speed dual fluoroscopy (DF), an x-ray videography technique, to quantify in-vivo kinematics of healthy asymptomatic ankles during activities of daily living. Using these kinematics as baseline data, our secondary objective was to assess preliminary kinematic differences between chronic ankle instability (CAI) patients and asymptomatic control subjects.Methods:High-speed DF images of the hindfoot of ten healthy, asymptomatic adults and four adults with CAI were acquired during treadmill walking at 0.5 m/s and 1.0 m/s and during a single-leg, balanced heel-rise. Three-di...

【 授权许可】

CC BY