Orthopaedic Sports Medicine Center of Ioannina

Motion analysis system from VICON Motion Systems, (Oxford, UK) which enables us to calculate kinetics and kinematics parameters during a variety of movements. The calculation of these parameters is performed automatically using our system software. In this way we are able to study the mechanisms of gait disorders and their relation to musculoskeletal injuries. The system has eight infra red cameras sampling at 200 Hz, positioned in a circular setup around the path of movement. Fifteen reflective markers (25mm diameter) are attached on specific bony landmarks of the subject, depending on the biomechanical model used and the subject performs a given motor task. The position of the markers during the task is recorded and the signal is then converted into a digital format for computer processing. The combination of multiple cameras provides the 3-dimensional marker coordinates. Using the musculoskeletal model and the marker coordinates we can calculate joint kinematics.