Human gait analysis has been widely investigated in several applications: identification of gait impairments, therapy designing for rehabilitation, sports medicine, design of orthoses and prosthetics. Most often, gait analysis requires the use of expensive and complex devices, and as well, the experimental protocol is complicated and demands various steps. In this context, the Microsoft Kinect, a free video gaming controller, could be employed in clinical applications as a low cost and easy-to-use motion capture system. Several studies have been conducted in evaluating the Kinect sensor using another gold standard device (Springer & Seligmann 2016)(Pfister et al. 2014). For these works, gait kinematic parameters were obtained independently from each system. In the negative, we performed a calibration procedure between the Kinect and the Vicon gold standard device. Thereby, kinematics data can be written in the same reference frame, and hence, joint centers can be defined as same for both systems. The aim of this work is to evaluate the validity of the Kinect for gait kinematics analysis in comparison to the Vicon system where a Cartesian calibration is made for both motion capture devices.
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