Effects of sagittal plane axis shifts in hinged ankle-foot orthoses on gait mechanics and shaft-to-leg relative motion

This study underscores the importance of anterior-posterior alignment in optimizing ankle joint function with orthotics. Specifically, anterior alignment reduced pistoning more effectively than the manufacturer-recommended neutral position, particularly during dorsiflexion. These findings highlight the clinical relevance of aligning the orthotic axis with natural joint mechanics, which can reduce motion restrictions, improve gait efficiency, and prevent harmful pressures that may cause discomfort, bruising, and inflammation around the ankle.