School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Jungong Rd. 516, Shanghai 200093, China.
Shanghai Engineering Research Center of Assistive Devices, Jungong Rd. 516, Shanghai 200093, China.
Sensors (Basel). 2021 Mar 4;21(5):1780. doi: 10.3390/s21051780.
Flatfoot is a common musculoskeletal deformity. One of the most effective treatments is to wear individually customized plantar pressure-based insoles to help users change the abnormally distributed pressure on the pelma. However, most previous studies were divided only into several plantar areas without detailed plantar characteristic analysis. In this study, a new insole is designed which redistributes pressure following the analysis of characteristic points of plantar pressure, and practical evaluation during walking of subjects while wearing the insole. In total, 10 subjects with flexible flatfeet have participated in the performance of gait experiments by wearing flat insoles, orthotic insoles, and plantar pressure redistribution insoles (PPRI). The results showed that the stance time of PPRI was significantly lower than that of the flat insoles under slow gait. PPRI in the second to third metatarsal and medial heel area showed better unloading capabilities than orthotic insoles. In the metatarsal and heel area, the PPRI also had its advantage in percentage of contact area compared to flat insole and orthotic insole. The results prove that PPRI improves the plantar pressure distribution and gait efficiency of adults with flexible flatfeet, and can be applied into clinical application.
扁平足是一种常见的骨骼肌肉畸形。最有效的治疗方法之一是穿定制的足底压力鞋垫，帮助使用者改变足底异常分布的压力。然而，大多数先前的研究仅分为几个足底区域，没有详细的足底特征分析。在这项研究中，设计了一种新的鞋垫，根据足底压力特征点的分析和受试者穿着鞋垫行走时的实际评估来重新分配压力。共有 10 名柔性扁平足受试者参与了穿着扁平鞋垫、矫形鞋垫和足底压力重新分布鞋垫（PPRI）的步态实验。结果表明，在慢走时，PPRI 的站立时间明显低于扁平鞋垫。在第二至第三跖骨和内足跟区域，PPRI 的卸载能力明显优于矫形鞋垫。在跖骨和足跟区域，与扁平鞋垫和矫形鞋垫相比，PPRI 也具有更大的接触面积百分比优势。研究结果证明，PPRI 可以改善柔性扁平足成年人的足底压力分布和步态效率，可应用于临床。
