Biomedical Engineering and Biomechanics
Biomedical Engineering and Biomechanics. 2025; 1: (1) ; 10.12208/j.beb.20250004 .
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1 安阳师范学院 河南安阳
2 安阳工学院 河南安阳
*通讯作者： Yufei Huang,单位： 安阳师范学院 河南安阳 安阳工学院 河南安阳；
目的 探讨蹲伏步态对脑瘫儿童踝关节生物力学的影响。方法 选取2020年10月至2022年10月某院收治的60例脑瘫患儿为研究对象，根据步态分为发育正常组和蹲伏步态组，每组30例。采用3D步态采集分析系统采集步态运动学数据，测试前进行静态测试校准计算模型的物理标记点。每次测试均要求受试者在指定区域以正常步行速度向前行走10 m，重复测量3次取平均值。比较两组患儿前后(AP)方向的杠杆臂和外力矩以及踝关节跖底压力中心内外(ML)位移的差异。结果 蹲伏步态组踝关节AP力臂明显大于发育正常组（P <0.05），而踝关节ML力臂及踝关节AP和ML外部力矩两组间比较差异均无统计学意义（P >0.05）。结论 分析蹲伏步态对脑瘫患儿踝关节生物力学的影响，有助于更科学、准确地评估患儿下肢运动功能，从而为患儿提供更加个性化的康复治疗方案，促进运动功能的恢复。
Objective To investigate the effect of crouching gait on ankle biomechanics in children with cerebral palsy. Methods Sixty children with cerebral palsy who had been treated in a hospital from October 2020 to October 2022 were selected for the study, and were divided into a normal developmental group and a crouching gait group according to their gait, with 30 cases in each group. A 3D gait acquisition and analysis system was used to collect gait kinematic data, and static tests were completed to calibrate the physical marker points of the computational model before testing. For each test, the subjects were asked to walk forward 10 m at normal gait speed in a designated area and the measurements were repeated three times and the average was taken. Differences in lever arm and external moment in the direction of anteroposterior (AP) and medial-lateral (ML) displacement of the ankle plantar centre of pressure were compared between the two groups of children. Results The ankle AP lever arm was significantly longer in the crouching gait group than in the normal development group (P<0.05), while there were no significant differences in the ankle ML lever arm and the ankle AP and ML external moments between the two groups (P>0.05). Conclusion Analysis of the effect of crouching gait on ankle biomechanics in children with cerebral palsy can help to assess the lower limb motor function of children more scientifically and accurately, so as to provide more personalized rehabilitation treatment plans for children and promote the recovery of motor function.
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