The Impact of Casting Methods on Custom Foot Orthotics and Gait Mechanics in Pes Planus, Pes Cavus, and Rectus Feet
Date of Award
Spring 5-9-2026
Document Type
Non Thesis
Degree Name
Master of Science in Orthotics and Prosthetics
Department
Kinesiology
Abstract
The precision with which a foot's form is captured may be a critical determinant of custom foot orthotic efficacy. This study investigated the impact of different casting methods on gait mechanics in individuals with varying foot types. Custom foot orthotics are commonly used to manage foot-related conditions and improve gait, but the optimal casting method for different foot types remains unclear. The study compared plaster casting, foam impression, and digital scanning methods, focusing on participants with pes planus, pes cavus, and rectus feet. Gait analysis, using a motion capture system and force plates, was proposed to quantify kinematic and kinetic data. An in-shoe system was intended to assess plantar pressure distribution during gait, complementing the gait analysis data. Participants were fitted with custom orthotics created using each casting method. Primary outcome measures included peak ankle dorsiflexion, ground reaction force, and plantar pressure distribution. It was hypothesized that different casting methods would yield significantly different gait mechanics within each foot type group (pes planus, pes cavus, and rectus), reflecting the casting method's influence on orthotic effectiveness for that specific foot type. The study aimed to inform clinical practice by providing evidence-based guidance on casting method selection. The findings were expected to contribute to a better understanding of the relationship between casting methods, foot types, and gait mechanics, leading to more personalized and effective orthotic interventions. Future research was suggested to focus on long-term outcomes and explore the interaction between casting methods and orthotic design features.