Patterns of Subtalar Joint Movement in Feet with a Forefoot Deformity during Stance
Herrmann, Mary Ann
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Walking, though taken for granted, is a complex combination of many joint motions in the lower extremity and the foot. The foot is functioning dynamically throughout the entire walk cycle, particularly during the stance phase when it appears to be stationary. One important joint in the foot involved in the biomechanics of motion is the subtalar joint. In normal feet, it undergoes a certain pattern of motion from the moment of heel contact to the floor, to the moment of toe-off. However, some experts believe that the majority of feet may have some sort of deformity that may alter this pattern. This study was prompted by articles in the Journal of the American Podiatry Association and A Compendium of Podiatric Biomechanics which described patterns of subtalar joint moevement in feet with a forefoot deformity observed in a clinical setting. In this study, quantitative data of subtalar joint movement during stance were made through film motion analyzation. Patterns from this data were compared with published clinical observations.