The Effect of Different Foot Orthosis Inverted Angles on Plantar Pressure in Children with Flexible Flatfeet. Bok SK et al PLoS One. 2016 Jul 26;11(7):e0159831 Quote: Although orthotic modification using the inverted technique is available for the treatment of flatfoot, empirical evidence for the biomechanical effects of inverted-angle foot orthoses (FOs) is lacking.
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Effect of Different Foot Orthosis Inverted Angles on Plantar Pressure