Department of Sport Injuries and Corrective Exercises, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran.
Department of Sport Injuries and Corrective Exercises, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran.
Gait Posture. 2024 Jan;107:330-336. doi: 10.1016/j.gaitpost.2023.10.025. Epub 2023 Nov 2.
Gait mechanics alternation is one of side effects after anterior cruciate ligament reconstruction (ACLR). Foot roll-off characteristics shows whole gait mechanics and is not well known in ACLR patients. The purpose of present study was to investigate the roll-off process characteristics while walking and running in patients with ACLR history.
Is there any difference in walking and running roll-off characteristics between patients with ACLR history and healthy individuals?
48 physically active males (24 healthy and 24 with ACLR history) participated in this study. Participants walked and ran on a footscan (Rsscan International) which was mounted in the midway of a 18 m runway at the speeds of 2 m·s and 3.3 m·s. Center of pressure (COP) trajectory, timing of stance subphases, foot progression angle and contact time were calculated bilaterally in walking and running. Mixed-design MANOVA was used to examine effect of ACLR on the outcomes.
The results showed that ACLR participants had greater foot progression angle (p = .001) and more medially oriented COP trajectory in forefoot push-off phase (FFPOP) of waking (p = .001) and running (p = .001), but showed shorter contact time in running compared to healthy group (p = .02). Involved leg in ACLR group showed greater foot progression angle (p = .001) and more medially directed COP trajectory in FFPOP of walking (p = .001) and running (p = .01) compared to uninvolved side. Also, involved leg had shorter contact time (p = .04) and shorter relative time in the forefoot contact phase (p = .001), and longer relative time in forefoot flat phase (p = .001) during running.
Based on the results, it can be concluded that ACLR affects running and walking roll-off characteristics which can show altered mechanics. Running shows remarkable differences in roll-off process than walking. So, it is recommended to use running in post-ACLR assessments rather than walking.
步态力学改变是前交叉韧带重建（ACLR）后的副作用之一。足滚动特征可反映整个步态力学，但在 ACLR 患者中并不为人所知。本研究旨在探讨 ACLR 病史患者在行走和跑步时的滚动过程特征。
ACL 重建病史患者在行走和跑步时的滚动特征是否存在差异？
48 名活跃男性（24 名健康男性和 24 名 ACLR 病史患者）参与了本研究。参与者以 2m·s 和 3.3m·s 的速度在一个 18m 跑道的中间位置在 footscan（Rsscan International）上行走和跑步。在行走和跑步时，双侧计算了中心压力（COP）轨迹、支撑相分期时间、足进角和接触时间。采用混合设计 MANOVA 检验 ACLR 对结果的影响。
结果显示，ACL 重建组在行走和跑步的前足推进阶段（FFPOP）中，足进角更大（p=0.001），前足着地时 COP 轨迹更偏向内侧（p=0.001），但跑步时接触时间更短（p=0.02）。ACL 重建组的患侧在行走和跑步的 FFPOP 中，足进角更大（p=0.001），COP 轨迹更偏向内侧（p=0.001）。此外，患侧在跑步时的接触时间更短（p=0.04），前足接触阶段的相对时间更短（p=0.001），前足平足阶段的相对时间更长（p=0.001）。
基于这些结果，可以得出结论，ACL 重建会影响行走和跑步的滚动特征，从而改变力学特性。与行走相比，跑步在滚动过程中显示出更显著的差异。因此，建议在 ACLR 后评估中使用跑步，而不是行走。
