Relationship between foot condition in standing and rearfoot eversion moment during walking

Evaluating the magnitude of the rearfoot eversion moment, which influences rearfoot eversion motion during walking, is crucial for preventing lower limb and lower back injuries. This study aimed to determine whether the magnitude of the rearfoot eversion moment during the support phase of walking can be estimated based on foot conditions in a standing position. A motion capture system and a force platform were used to collect data on the center of the ankle joint position, longitudinal foot axis orientation, and ground reaction force during both standing and the support phase of walking in 43 healthy adult males. The study examined the relationship between the lateral distance from the ankle joint center to the center of pressure during standing and the magnitude of the rearfoot eversion moment during the support phase of walking. A significant correlation was observed between the lateral distance from the ankle joint center to the center of pressure during standing and the peak rearfoot eversion moment during the support phase of walking. These findings suggest that the rearfoot eversion moment during walking may be estimated using standing data. This could facilitate a simple evaluation method for injury prevention in clinical practice.

评估行走过程中影响后足外翻运动的后足外翻力矩（rearfoot eversion moment）的大小，对于预防下肢与下腰部损伤至关重要。本研究旨在明确：能否基于站立位时的足部状态，估算行走支撑相的后足外翻力矩大小。研究招募43名健康成年男性，采用运动捕捉系统（motion capture system）与测力台（force platform），采集其站立与行走支撑相期间的踝关节中心位置、足部纵轴朝向以及地面反作用力数据。本研究分析了站立位时踝关节中心至压力中心（center of pressure）的横向距离，与行走支撑相期间后足外翻力矩大小之间的关联。研究发现，站立位时踝关节中心至压力中心的横向距离，与行走支撑相期间后足外翻力矩峰值存在显著相关性。上述结果表明，可通过站立位数据估算行走过程中的后足外翻力矩，这有望为临床实践中的损伤预防提供一种简便的评估方法。