Background: The aim of this study is to explore the changes in ground reaction force (GRF) produced by custom-made weightbearing
and nonweight-bearing foot orthoses and by a prefabricated foot orthosis, in the control of the pronated foot.
Methods:Thirty-nine participants were recruited. All were in good health, aged 18 to 25 years, and presented pronated foot. Three
different types of foot orthosis were studied: prefabricated, weight-bearing, and nonweight-bearing.
Results: No significant differences were observed in the phases of the gait cycle between the prefabricated, the weight-bearing,
and the nonweight-bearing foot orthoses.
Conclusions: Neither prefabricated insoles nor custom-made orthoses (weight-bearing or nonweight-bearing) modified GRF.
Abbreviations: ANOVA = analysis of variance, BW = body weight, CEUMA = Ethic Committee of the University of Málaga, FPI =
foot posture index, GRF = ground reaction forces, SD = standard deviation, STJ = subtalar joint.
