Abstract
Background Augmented video enables digital video image treatment by augmenting it with computer generated information, measurements and/or virtual imagery. We tested this technology (1) as a measurement tool associated with a visual gait assessment scale for children with cerebral palsy to determine whether it improved it's interobserver reliability and (2) as an external feedback tool during physiotherapy sessions. Methods and results (1) Two observers watched a random selection of 20 gait videos of 12 children with cerebral palsy. The videos were scored using the Observational Gait Scale, one with standard video software, the other with augmented video software (Dartfish®). Interobserver agreement for the total score went from substantial to excellent with video augmentation (κ 0.785 → 0.809). The most important increases were noted for the items that required objective angle and/or duration measurements. (2) Qualitative study of augmented video use during two successive physiotherapy sessions in 13 children with motor impairments. The software's contribution had positive assessments especially in children aged 9 and above. Conclusions The use of augmented video software improves the reliability of filmed gait assessments, offering an accessible and versatile alternative to 3D kinematic analysis. The analysis tools and filmed sequence manipulation options provided by augmented video also have the potential for being clinically applied in motor therapy as a potent augmented feedback tool.
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