PDF(Pubmed)
Abstract：
OBJECTIVE: Abnormal lower limb movement patterns have been observed during walking in individuals with limited ankle dorsiflexion. The purpose of this study was to investigate the relationships of peak ankle dorsiflexion angle during the stance phase of walking with the lower extremity biomechanics at the corresponding moment and to determine a cutoff value of functional limited ankle dorsiflexion during walking.
METHODS: Kinematic and kinetic data of 70 healthy participants were measured during walking. Spearman\'s correlation coefficients were calculated to establish the association between peak ankle dorsiflexion and angle and moment of ankle, knee, and hip, ground reaction force, and pelvic movement at peak ankle dorsiflexion. All variables significantly related to peak ankle dorsiflexion were extracted as a common factor by factor analysis. Maximally selected Wilcoxon statistic was used to perform a cutoff value analysis.
RESULTS: Peak ankle dorsiflexion positively correlated with ankle plantar flexion moment (r = 0.432; p = 0.001), ankle external rotation moment (r = 0.251; p = 0.036), hip extension angle (r = 0.281; p = 0.018), hip flexion moment (r = 0.341; p = 0.004), pelvic ipsilateral rotation angle (r = 0.284; p = 0.017), and medial, anterior, and vertical ground reaction force (r = 0.324; p = 0.006, r = 0.543; p = 0.001, r = 0.322; p = 0.007), negatively correlated with knee external rotation angle (r = -0.394; p = 0.001) and hip adduction angle (r = -0.256; p = 0.032). The cutoff baseline value for all 70 participants was 9.03°.
CONCLUSIONS: There is a correlation between the peak ankle dorsiflexion angle and the lower extremity biomechanics during walking. If the peak ankle dorsiflexion angle is less than 9.03°, the lower limb movement pattern will change significantly.
METHODS: Kinematic and kinetic data of 70 healthy participants were measured during walking. Spearman\'s correlation coefficients were calculated to establish the association between peak ankle dorsiflexion and angle and moment of ankle, knee, and hip, ground reaction force, and pelvic movement at peak ankle dorsiflexion. All variables significantly related to peak ankle dorsiflexion were extracted as a common factor by factor analysis. Maximally selected Wilcoxon statistic was used to perform a cutoff value analysis.
RESULTS: Peak ankle dorsiflexion positively correlated with ankle plantar flexion moment (r = 0.432; p = 0.001), ankle external rotation moment (r = 0.251; p = 0.036), hip extension angle (r = 0.281; p = 0.018), hip flexion moment (r = 0.341; p = 0.004), pelvic ipsilateral rotation angle (r = 0.284; p = 0.017), and medial, anterior, and vertical ground reaction force (r = 0.324; p = 0.006, r = 0.543; p = 0.001, r = 0.322; p = 0.007), negatively correlated with knee external rotation angle (r = -0.394; p = 0.001) and hip adduction angle (r = -0.256; p = 0.032). The cutoff baseline value for all 70 participants was 9.03°.
CONCLUSIONS: There is a correlation between the peak ankle dorsiflexion angle and the lower extremity biomechanics during walking. If the peak ankle dorsiflexion angle is less than 9.03°, the lower limb movement pattern will change significantly.
摘要：
目的：踝关节背屈受限的个体在行走过程中观察到异常的下肢运动模式。这项研究的目的是研究步行站立阶段踝关节背屈角度峰值与相应时刻下肢生物力学的关系，并确定步行过程中功能性有限踝关节背屈的临界值。
方法：在步行过程中测量了70名健康参与者的运动学和动力学数据。计算Spearman相关系数，以建立峰值踝关节背屈与踝关节角度和力矩之间的关联。膝盖,和臀部，地面反作用力,和踝关节背屈高峰期的骨盆运动。通过因子分析，提取了与踝关节背屈峰值显着相关的所有变量作为共同因素。使用最大选择的Wilcoxon统计量进行截止值分析。
结果：踝关节背屈峰值与踝关节足底屈曲力矩呈正相关（r=0.432；p=0.001），踝关节外转力矩(r=0.251;p=0.036),髋部伸展角（r=0.281；p=0.018），髋关节屈曲力矩（r=0.341；p=0.004），骨盆同侧旋转角度（r=0.284；p=0.017），和中间，前,和垂直地面反作用力（r=0.324；p=0.006，r=0.543；p=0.001，r=0.322；p=0.007），与膝关节外旋角度(r=-0.394;p=0.001)和髋关节内收角度(r=-0.256;p=0.032)呈负相关。所有70名参与者的截止基线值为9.03°。
结论：步行过程中踝关节背屈峰值与下肢生物力学之间存在相关性。如果踝关节背屈峰值角小于9.03°,下肢运动模式将发生显著变化。
方法：在步行过程中测量了70名健康参与者的运动学和动力学数据。计算Spearman相关系数，以建立峰值踝关节背屈与踝关节角度和力矩之间的关联。膝盖,和臀部，地面反作用力,和踝关节背屈高峰期的骨盆运动。通过因子分析，提取了与踝关节背屈峰值显着相关的所有变量作为共同因素。使用最大选择的Wilcoxon统计量进行截止值分析。
结果：踝关节背屈峰值与踝关节足底屈曲力矩呈正相关（r=0.432；p=0.001），踝关节外转力矩(r=0.251;p=0.036),髋部伸展角（r=0.281；p=0.018），髋关节屈曲力矩（r=0.341；p=0.004），骨盆同侧旋转角度（r=0.284；p=0.017），和中间，前,和垂直地面反作用力（r=0.324；p=0.006，r=0.543；p=0.001，r=0.322；p=0.007），与膝关节外旋角度(r=-0.394;p=0.001)和髋关节内收角度(r=-0.256;p=0.032)呈负相关。所有70名参与者的截止基线值为9.03°。
结论：步行过程中踝关节背屈峰值与下肢生物力学之间存在相关性。如果踝关节背屈峰值角小于9.03°,下肢运动模式将发生显著变化。
