Becker N L, Obens T, Weisser J, Flick S
Facharztpraxis für Orthopädie, Sportmedizin, Chirotherapie, Akupunktur sowie Institut für angewandte Biomechanik, Wilhelmstr. 134, 72074, Tübingen, Deutschland,
Orthopade. 2014 Sep;43(9):825-32. doi: 10.1007/s00132-014-2310-6.
From an orthopedic point of view, wearing conventional ready to wear shoes negatively affects the front transverse arch of the human foot by forcing it into an unnatural inverted position.
The aim of the present orthopedic application study was to conduct a standardized assessment of the biomechanical effect of a newly developed, longitudinally flexible and cross stable spring steel insole by means of pedobarographic measurements and by means of a supplementary questioning of the participants.
In order to do this a total of 33 healthy adult participants were recruited in summer 2013. The randomized, blinded and controlled main study compared the cross stable insole made from spring steel with a flat, ordinary control insole made from ethylene vinyl acetate by means of pedobarographic in-shoe measurements at the forefoot. Additionally, the subjectively perceived effect of the steel insole with respect to comfort, restricted mobility and pain was assessed in a randomized, blinded and controlled ancillary study, using a cross-over design.
Both the plantar peak pressure and the plantar force-time integral were significantly higher with the spring steel insole, especially in the central forefoot. In the subsequent test phase lasting several weeks during which the participants were asked to wear the spring steel insole, they rarely complained about problems and in particular did not report negative effects regarding comfort, restricted mobility and pain compared to the ordinary control insoles.
The present study was conducted according to high methodological standards and proved for the first time that the tested spring steel insoles have a positive effect on the human forefoot. The cross stability increases the pressure in the median ball area, prevents the unnatural inverted position of the forefoot and thus creating an effect which is comparable to walking barefoot. As the participants did not judge this orthopedic effect of the cross stability as being uncomfortable, such an insole could be used a millionfold as a primary prevention in conventional shoes.
从骨科角度来看,穿着传统的现成鞋子会迫使人类足部的前横弓处于不自然的内翻位置,从而对其产生负面影响。
本骨科应用研究的目的是通过足底压力测量以及对参与者的补充询问,对一种新开发的、纵向灵活且横向稳定的弹簧钢鞋垫的生物力学效应进行标准化评估。
为此,在2013年夏季共招募了33名健康成年参与者。随机、双盲和对照的主要研究通过前足的鞋内足底压力测量,将弹簧钢制成的横向稳定鞋垫与乙烯醋酸乙烯酯制成的扁平普通对照鞋垫进行比较。此外,在一项随机、双盲和对照的辅助研究中,采用交叉设计评估了弹簧钢鞋垫在舒适度、活动受限和疼痛方面的主观感受效果。
弹簧钢鞋垫的足底峰值压力和足底力-时间积分均显著更高,尤其是在前足中部。在随后持续数周的测试阶段,参与者被要求穿着弹簧钢鞋垫,他们很少抱怨有问题,特别是与普通对照鞋垫相比,没有报告在舒适度、活动受限和疼痛方面的负面影响。
本研究按照高方法学标准进行,首次证明了测试的弹簧钢鞋垫对人类前足有积极影响。横向稳定性增加了跖球中部区域的压力,防止前足不自然的内翻位置,从而产生与赤脚行走相当的效果。由于参与者并未将这种横向稳定性的骨科效果判断为不舒服,这样的鞋垫可作为传统鞋子的一级预防措施大量使用。