Liu Xin, Zheng Bin, Guo Qinwei, Yu Yuanyuan, Zhang Zhongshi, Wulamu Aziguli, Zhang Dezheng
School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing, China 100083.
Surgical Simulation Research Laboratory, Department of Surgery, University of Alberta, Edmonton, Alberta, Canada T6G 2E1.
Appl Bionics Biomech. 2022 Jan 6;2022:3057270. doi: 10.1155/2022/3057270. eCollection 2022.
We evaluated the velocity profiles of patients with lateral collateral ligament (LCL) injuries of the ankle with a goal of understanding the control mechanism involved in walking.
We tracked motions of patients' legs and feet in 30 gait cycles recorded from patients with LCL injuries of the ankle and compared them to 50 gait cycles taken from normal control subjects. Seventeen markers were placed on the foot following the Heidelberg foot measurement model. Velocity profiles and microadjustments of the knee, ankle, and foot were calculated during different gait phases and compared between the patient and control groups.
Patients had a smaller first rocker percentage and larger second rocker percentage in the gait cycle compared to controls. Patients also displayed shorter stride length and slower strides and performed more microadjustments in the second rocker phase than in other rocker/swing phases. Patients' mean velocities of the knee, ankle, and foot in the second rocker phase were also significantly higher than that in control subjects. . Evidence from velocity profiles suggested that patients with ligament injury necessitated more musculoskeletal microadjustments to maintain body balance, but these may also be due to secondary injury. Precise descriptions of the spatiotemporal gait characteristics are therefore crucial for our understanding of movement control during locomotion.
我们评估了踝关节外侧副韧带（LCL）损伤患者的速度曲线，目的是了解步行过程中的控制机制。
我们记录了踝关节LCL损伤患者的30个步态周期中腿部和足部的运动，并将其与正常对照受试者的50个步态周期进行比较。按照海德堡足部测量模型在足部放置了17个标记。计算了不同步态阶段膝关节、踝关节和足部的速度曲线及微调整，并在患者组和对照组之间进行了比较。
与对照组相比，患者在步态周期中的首次摆动百分比更小，第二次摆动百分比更大。患者还表现出步幅更短、步速更慢，并且在第二次摆动阶段比在其他摆动/摆动阶段进行了更多的微调整。患者在第二次摆动阶段膝关节、踝关节和足部的平均速度也显著高于对照组。速度曲线的证据表明，韧带损伤患者需要更多的肌肉骨骼微调整来维持身体平衡，但这也可能是由于继发性损伤。因此，对时空步态特征的精确描述对于我们理解运动过程中的运动控制至关重要。
