Helili Maimaitirexiati, Geng Xiang, Ma Xin, Chen Wenming, Zhang Chao, Huang Jiazhang, Wang Xu
Department of Orthopedics, Huashan Hospital, Fudan University, China.
Fudan University, China.
Appl Bionics Biomech. 2021 Jun 12;2021:5566036. doi: 10.1155/2021/5566036. eCollection 2021.
The plantar soft tissue plays a critical role in absorbing shocks and attenuating excessive stresses during walking. Plantar soft tissue property and plantar pressure are critical information for footwear design and clinical assessment. The aim of this study was to investigate the relationship between plantar soft tissue hardness and plantar pressure during walking.
59 healthy volunteers (27 males and 32 females, aged 20 to 82) participated in this study. The plantar surface was divided into five regions: lateral rearfoot, medial rearfoot, lateral midfoot, lateral forefoot, and medial forefoot, and the plantar tissue hardness was tested using Shore durometer in each region. Average dynamic pressures in each region were analyzed for the five regions corresponding to the hardness tests. The relationship between hardness and average dynamic pressure was analyzed in each region.
The average hardness of the plantar soft tissue in the above five regions is as follows: lateral rearfoot (34.49 ± 6.77), medial rearfoot (34.47 ± 6.64), lateral midfoot (27.95 ± 6.13), lateral forefoot (29.72 ± 5.47), and medial forefoot (28.58 ± 4.41). Differences of hardness were observed between age groups, and hardness of plantar soft tissues in forefoot regions increased with age ( < 0.05). A negative relationship was found between plantar soft tissue hardness and pressure reduction at lateral rearfoot, medial rearfoot, and lateral midfoot ( < 0.05).
The hardness of plantar soft tissues changes with age in healthy individuals, and there is a trend of increasing hardness of the plantar soft tissue with age. The plantar soft tissue hardness increases with plantar pressure.
足底软组织在行走过程中对吸收冲击和减轻过度压力起着关键作用。足底软组织特性和足底压力是鞋类设计和临床评估的关键信息。本研究的目的是探讨行走过程中足底软组织硬度与足底压力之间的关系。
59名健康志愿者（27名男性和32名女性，年龄20至82岁）参与了本研究。足底表面被分为五个区域：外侧后足、内侧后足、外侧中足、外侧前足和内侧前足，使用邵氏硬度计在每个区域测试足底组织硬度。对与硬度测试相对应的五个区域的每个区域的平均动态压力进行分析。分析每个区域硬度与平均动态压力之间的关系。
上述五个区域的足底软组织平均硬度如下：外侧后足（34.49±6.77）、内侧后足（34.47±6.64）、外侧中足（27.95±6.13）、外侧前足（29.72±5.47）和内侧前足（28.58±4.41）。不同年龄组之间观察到硬度差异，前足区域的足底软组织硬度随年龄增加（<0.05）。在外侧后足、内侧后足和外侧中足，发现足底软组织硬度与压力降低之间存在负相关（<0.05）。
健康个体的足底软组织硬度随年龄变化，且足底软组织硬度有随年龄增加的趋势。足底软组织硬度随足底压力增加。
