The Adelaide in-shoe foot model

NewsBot · Apr 18, 2017

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The reliability of the Adelaide In-Shoe Foot Model
Chris Bishop, Susan Hillier, Dominic Thewlis
Gait and Posture; Article in Press

Highlights
•The Adelaide in-shoe foot model has good consistency of waveform estimation (CMC =
•0.61) across sessions for all kinematics, GRF, COP and external hindfoot joint moments.
•The Adelaide in-shoe foot model can be used with confidence for 24 commonly measured biomechanical variables during shod walking.
•The SEM thresholds provided can assist in the detection of differences between conditions that are not a result of statistical or measurement error.
•The Adelaide in-shoe foot model is recommended for use in studies requiring an understanding of in-shoe foot motion during walking given both its demonstrated reliability and rigorous development in regards to shoe-hole size and free marker motion.
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Understanding the biomechanics of the foot is essential for many areas of research and clinical practice such as orthotic interventions and footwear development. Despite the widespread attention paid to the biomechanics of the foot during gait, what largely remains unknown is how the foot moves inside the shoe. This study investigated the reliability of the Adelaide In-Shoe Foot Model, which was designed to quantify in-shoe foot kinematics and kinetics during walking. Intra-rater reliability was assessed in 30 participants over five walking trials whilst wearing shoes during two data collection sessions, separated by one week. Sufficient reliability for use was interpreted as a coefficient of multiple correlation and intra-class correlation coefficient of > 0.61. Inter-rater reliability was investigated separately in a second sample of 10 adults by two researchers with experience in applying markers for the purpose of motion analysis. The results indicated good consistency in waveform estimation for most kinematic and kinetic data, as well as good inter-and intra-rater reliability. The exception is the peak medial ground reaction force, the minimum abduction angle and the peak abduction/adduction external hindfoot joint moments which resulted in less than acceptable repeatability. Based on our results, the Adelaide in-shoe foot model can be used with confidence for 24 commonly measured biomechanical variables during shod walking.
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Admin2 · Apr 18, 2017

Related Thread:
Repeatability in the assessment of multi-segment foot kinematics

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