Reliability of the Dynamic Foot Index for Observational Assessment of Foot Motion During Gait

The Dynamic Foot Index (DFI) demonstrated moderate to substantial intra-rater reliability and variable inter-rater reliability across stance-phase subphases in healthy adults. These findings support the use of the Dynamic Foot Index (DFI) as a clinically feasible observational tool for longitudinal assessment of foot motion during gait, particularly when applied by the same evaluator.