Jafarnezhadgero AmirAli, Majlesi Mahdi, Madadi-Shad Morteza
Department of Physical Education and Sport Sciences, Faculty of Educational Science and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran.
Department of Sport Biomechanics, Faculty of Humanities, Islamic Azad University, Hamedan Branch, Hamedan, Iran.
Foot (Edinb). 2018 Mar;34:63-68. doi: 10.1016/j.foot.2017.11.005. Epub 2017 Nov 10.
The prevalence of flexible flat feet in children was reported to be up to 20% in previous studies. However, the role of foot type in the development of musculoskeletal injuries is less clear, particularly in children. The purpose of this study was to investigate the differences in the joint moment asymmetry in children with flexible flat feet and healthy matched control subjects.
Fourteen male children with flexible flat feet and 15 healthy control subjects served as the sample of the study. Three dimensional kinematics and kinetic data were collected using a Vicon camera system and two Kistler force platforms during walking. Then between-limb asymmetry was examined for each joint moment.
Normal individuals experienced higher asymmetry in the ankle eversion and the external rotation moments than the flat feet group. Asymmetry indices in the knee abduction, adduction, and the internal rotation moments in the flat feet group were higher than that in the normal group by 15%, 24% and 13%, respectively. Furthermore, in comparison of the two groups, individuals with flat feet had higher asymmetry in the hip flexion moment as well as the hip abduction moment.
In order to provide appropriate protocols or footwear design for male children with flat feet, clinicians need to understand that flat feet children do not have higher levels of joint moment asymmetry as compared to normal children in all joints and all planes; consequently, they must differentiate their treatments for each specific joint. However, further larger study is warranted.
先前的研究报道儿童柔性扁平足的患病率高达20%。然而，足型在肌肉骨骼损伤发展中的作用尚不清楚，尤其是在儿童中。本研究的目的是调查柔性扁平足儿童与健康对照受试者在关节力矩不对称方面的差异。
14名患有柔性扁平足的男性儿童和15名健康对照受试者作为研究样本。在行走过程中，使用Vicon摄像系统和两个Kistler测力平台收集三维运动学和动力学数据。然后检查每个关节力矩的肢体间不对称性。
正常个体在踝关节外翻和外旋力矩方面的不对称性高于扁平足组。扁平足组在膝关节外展、内收和内旋力矩方面的不对称指数分别比正常组高15%、24%和13%。此外，两组比较，扁平足个体在髋关节屈曲力矩以及髋关节外展力矩方面的不对称性更高。
为了为患有扁平足的男性儿童提供合适的治疗方案或鞋类设计，临床医生需要明白，与正常儿童相比，扁平足儿童并非在所有关节和所有平面上都具有更高水平的关节力矩不对称性；因此，他们必须针对每个特定关节进行差异化治疗。然而，有必要进行进一步的大规模研究。
