Hida Takashi, Okuda Ryuzo, Yasuda Toshito, Jotoku Tsuyoshi, Shima Hiroaki, Neo Masashi
Department of Orthopedic Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, 569-8686, Japan.
Department of Orthopaedic Surgery, Shimizu Hospital, 11-2 Yamadanakayoshimi-cho, Nishikyo-ku, Kyoto, 615-8237, Japan.
J Orthop Sci. 2017 Nov;22(6):1054-1059. doi: 10.1016/j.jos.2017.08.008. Epub 2017 Aug 23.
Detailed information regarding differences in plantar pressure distribution between hallux valgus and healthy feet is unavailable. The purposes of the present study were to clarify the characteristics of the plantar pressure distribution in patients with hallux valgus compared with healthy matched controls and to determine whether hallux valgus leads to dysfunction of the great toe during walking.
The study consisted of 25 patients with symptomatic moderate-to-severe hallux valgus (HV group) and 13 healthy matched volunteers (C group) without hallux valgus. All patients and volunteers were women. The HV and C groups did not differ significantly in age, height, weight, and body mass index. Plantar pressure during walking was measured using F-scan. The plantar aspect of the foot was divided into eight regions. The peak pressure (Peak-P), maximum force (Max-F), contact time (Con-T), contact area (Con-A), and force time integral (FTI) were measured in each region.
The Peak-P of the great toe did not differ significantly between the HV and C groups. However, all other parameters: Max-F, Con-T, Con-A, and FTI of the great toe in the HV group were significantly lower than in the C group. In the central forefoot, the Peak-P and Max-F in the HV group were significantly higher than in the C group.
The present study demonstrated that a moderate-to-severe hallux valgus deformity leads to dysfunction of the great toe during walking and may increase mechanical loading on the central forefoot.
关于拇外翻与健康足之间足底压力分布差异的详细信息尚不可知。本研究的目的是阐明拇外翻患者与健康对照者相比足底压力分布的特征，并确定拇外翻是否会导致行走过程中大脚趾功能障碍。
本研究包括25例有症状的中重度拇外翻患者（HV组）和13名无拇外翻的健康匹配志愿者（C组）。所有患者和志愿者均为女性。HV组和C组在年龄、身高、体重和体重指数方面无显著差异。使用F-scan测量行走过程中的足底压力。足部的足底部分被分为八个区域。测量每个区域的峰值压力（Peak-P）、最大力（Max-F）、接触时间（Con-T）、接触面积（Con-A）和力时间积分（FTI）。
HV组和C组大脚趾的Peak-P无显著差异。然而，HV组大脚趾的所有其他参数：Max-F、Con-T、Con-A和FTI均显著低于C组。在前足中部，HV组的Peak-P和Max-F显著高于C组。
本研究表明，中重度拇外翻畸形会导致行走过程中大脚趾功能障碍，并可能增加前足中部的机械负荷。
