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Changes in ambulatory knee adduction moment with lateral wedge insoles differ with respect to the natural foot progression angle.
Journal of Biomechanics ( IF 2.4 ) Pub Date : 2020-01-24 , DOI: 10.1016/j.jbiomech.2020.109655
Baptiste Ulrich 1 , Laurent Hoffmann 2 , Brigitte M Jolles 3 , Julien Favre 1
Affiliation  

Lateral wedge insoles (LWI) have been proposed to reduce the knee adduction moment (KAM) during walking; a biomechanical modification notably sought in case of medial knee osteoarthritis. However, the inter-individual inconsistency in KAM changes with LWI limits their therapeutic use. Although the foot progression angle (FPA) has been frequently discussed in KAM modifications literature, there is a lack of data regarding a possible relationship between this gait measure and changes in KAM with LWI. This study aimed to test if KAM changes with LWI differ with respect to the natural FPA and to compare KAM-related variables between individuals walking with smaller and larger natural FPA. Twenty-two healthy participants (14 males, 24 ± 3 years, 22.7 ± 2.7 kg/m2) underwent gait analysis with and without LWI. They were divided into two groups based on their natural FPA, and changes in KAM 1st peak, KAM impulse, and KAM-related variables were compared between groups. KAM 1st peak and impulse decreased with LWI in the smaller natural FPA group (p ≤ 0.006), while only KAM impulse decreased in the larger natural FPA group (p < 0.001). The difference in KAM 1st peak changes was explained by a less reduced lever arm in participants walking with larger natural FPA. In conclusion, this study brought new insight into the variability in KAM response to LWI. If the findings are confirmed in patients with medial knee osteoarthritis, the FPA could become a simple measure to help identify the patients more likely to reduce their KAM with LWI.

中文翻译:

侧向楔形鞋垫的动态膝关节内收力矩的变化在自然脚前进角度方面有所不同。

已经提出了外侧楔形鞋垫(LWI)以减少步行过程中的膝盖内收力矩(KAM)。特别是在内侧膝骨关节炎的情况下寻求生物力学修饰。但是,KAM变化与LWI之间的个体差异限制了其治疗用途。尽管脚行进角(FPA)在KAM修改文献中经常讨论,但仍缺乏有关该步态测量值与LWI的KAM变化之间可能关系的数据。这项研究的目的是测试在自然FPA方面,随着LWI的KAM变化是否存在差异,并比较在使用越来越大的自然FPA行走的个体之间KAM相关变量。22名健康参与者(14名男性,24±3岁,22.7±2.7 kg / m2)在有或没有LWI的情况下进行了步态分析。根据其自然FPA将其分为两组,并比较两组之间KAM 1st峰值,KAM冲量和KAM相关变量的变化。在较小的自然FPA组中,随着LWI的KAM第1峰值和冲动降低(p≤0.006),而在较大的自然FPA组中只有KAM冲动降低(p <0.001)。KAM 1峰变化的差异是由于使用较大自然FPA行走的参与者的杠杆臂减少而导致的。总而言之,这项研究为KAM对LWI反应的变异性带来了新的见解。如果在内侧膝部骨关节炎患者中证实了这一发现,则FPA可以成为一种简单的方法,以帮助确定患者更可能通过LWI降低其KAM。在较小的自然FPA组中,随着LWI的KAM第1峰值和冲动降低(p≤0.006),而在较大的自然FPA组中只有KAM冲动降低(p <0.001)。KAM 1峰变化的差异是由于使用较大自然FPA行走的参与者的杠杆臂减少而导致的。总而言之,这项研究为KAM对LWI反应的变异性带来了新的见解。如果在内侧膝部骨关节炎患者中证实了这一发现,则FPA可能会成为一种简单的方法,以帮助确定患者更可能通过LWI降低其KAM。在较小的自然FPA组中,随着LWI的KAM第1峰值和冲动降低(p≤0.006),而在较大的自然FPA组中只有KAM冲动降低(p <0.001)。KAM 1峰变化的差异是由于使用较大自然FPA行走的参与者的杠杆臂减少而导致的。总而言之,这项研究为KAM对LWI反应的变异性带来了新的见解。如果在内侧膝部骨关节炎患者中证实了这一发现,则FPA可能会成为一种简单的方法,以帮助确定患者更可能通过LWI降低其KAM。KAM 1峰变化的差异是由于使用较大自然FPA行走的参与者的杠杆臂减少而导致的。总而言之,这项研究为KAM对LWI反应的变异性带来了新的见解。如果在内侧膝部骨关节炎患者中证实了这一发现,则FPA可能会成为一种简单的方法,以帮助确定患者更可能通过LWI降低其KAM。KAM 1峰变化的差异是由于使用较大自然FPA行走的参与者的杠杆臂减少而导致的。总而言之,这项研究为KAM对LWI反应的变异性带来了新的见解。如果在内侧膝部骨关节炎患者中证实了这一发现,则FPA可以成为一种简单的方法,以帮助确定患者更可能通过LWI降低其KAM。
更新日期:2020-04-21
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