Inter-examiner, intra-session and inter-session reliability of gait measurement.

Three-dimensional gait analysis is commonly used in the objective evaluation of children with idiopathic scoliosis. However, interpretation of results requires carefulness because the gait measurements are error prone. Assessing the reliability of gait analysis in each laboratory may be contribute to assess sources and magnitude of errors in gait analysis as well as determine the direction of the training of examiners.