Rigid Ankle Foot Orthosis Deteriorates Mediolateral Balance Control and Vertical Braking during Gait Initiation

Frontiers in Human Neuroscience
A DelafontaineJean-Louis Honeine

Abstract

Rigid ankle-foot orthoses (AFO) are commonly used for impeding foot drop during the swing phase of gait. They also reduce pain and improve gait kinematics in patients with weakness or loss of integrity of ankle-foot complex structures due to various pathological conditions. However, this comes at the price of constraining ankle joint mobility, which might affect propulsive force generation and balance control. The present study examined the effects of wearing an AFO on biomechanical variables and electromyographic activity of tibialis anterior (TA) and soleus muscles during gait initiation (GI). Nineteen healthy adults participated in the study. They initiated gait at a self-paced speed with no ankle constraint as well as wearing an AFO on the stance leg, or bilaterally. Constraining the stance leg ankle decreased TA activity ipsilaterally during the anticipatory postural adjustment (APA) of GI, and ipsilateral soleus activity during step execution. In the sagittal plane, the decrease in the stance leg TA activity reduced the backward displacement of the center of pressure (CoP) resulting in a reduction of the forward velocity of the center of mass (CoM) measured at foot contact (FC). In the frontal plane, wearing the AFO reduc...Continue Reading

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Citations

Dec 1, 2017·World Journal of Orthopedics·Eric YiouJean-Louis Honeine
Aug 20, 2019·Neuropsychopharmacology : Official Publication of the American College of Neuropsychopharmacology·Andrea N Goldstein-PiekarskiLeanne M Williams
Jun 22, 2019·Evidence-based Complementary and Alternative Medicine : ECAM·Yilan ShengBo Yu
May 7, 2019·Frontiers in Neurology·Arnaud DelafontaineSilvia Colnaghi
Feb 25, 2021·Medical & Biological Engineering & Computing·Yi Ting YapYu Zheng Chong
May 17, 2021·Journal of Bodywork and Movement Therapies·Ensieh Pourhoseingholi, Hassan Saeedi

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