Reliability of a Gait Analysis System

SILEMA consists of a webcam connected to a laptop, a LED reflector, and a software. To carry out gait analysis with SILEMA, an Evaluator must place six yellow auto-adhesive markers over certain anatomical landmarks in the lower limbs, namely, greater trochanter, external femoral condyle, head of the fibula, lateral malleolus and base and head of the fifth metatarsal. The patient is asked to walk barefoot through an eight meter walkway at a self-selected speed, while a webcam connected to a laptop records a video. Then, an Operator, making use of the software, processes the video, obtaining spatio-temporal and joint kinematic parameters.