Department of Physical Therapy and Athletic Training, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA, USA.
Department of Physical Therapy and Athletic Training, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA, USA.
J Biomech. 2014 Aug 22;47(11):2618-25. doi: 10.1016/j.jbiomech.2014.05.021. Epub 2014 Jun 6.
The purpose of the present study was to determine the effects of orthoses designed to support the forefoot and rearfoot on the kinematics and kinetics of the lower extremity joints during walking. Fifteen participants volunteered for this study. Kinematic and kinetic variables during overground walking were compared with the participants wearing sandals without orthoses or sandals with orthoses. Orthoses increased knee internal abduction moment during late stance and knee abduction angular impulse, and reduced the medial ground reaction force during late stance, adduction free moment, forefoot eversion angle, ankle inversion moment and angular impulse, hip adduction angle, hip abduction moment, and hip external rotation moment and angular impulse (p<0.05). Orthoses decreased the torsional forces on the lower extremity and reduced the loading at the hip during walking. These findings combined with our previous studies and those of others suggest that forefoot abnormalities are critically important in influencing lower extremity kinematics and kinetics, and may underlie some non-traumatic lower extremity injuries.
本研究的目的是确定旨在支撑前足和后足的矫形器对步行时下肢关节运动学和动力学的影响。15 名参与者自愿参加了这项研究。比较了参与者穿着无矫形器的凉鞋或带有矫形器的凉鞋时的运动学和动力学变量。矫形器增加了末期站立时的膝关节内收外展力矩和膝关节外展角冲量，并减少了末期站立时的内侧地面反作用力、内收自由力矩、前足外旋角度、踝关节内翻力矩和角冲量、髋关节内收角度、髋关节外展力矩和髋关节外旋力矩和角冲量（p<0.05）。矫形器降低了下肢的扭转力，并减少了行走时髋关节的负荷。这些发现与我们之前的研究以及其他人的研究表明，前足异常对下肢运动学和动力学有重要影响，可能是一些非创伤性下肢损伤的基础。
