Evaluation of a competition wheelchair based on estimation of biomechanical parameters by using inverse dynamics analysis

Abstract

The objective of this study was to construct a musculoskeletal model which can estimate biomechanical parameters by simulating a forward liner operation of a competition wheelchair based on an experimental data for motion and to investigate the relationship between an angle and moment of joint and biomechanical parameters. The simulation model was represented by restraining the contact area between the body model and the frame and seat of the wheelchair. The operation of the wheelchair was represented by inputting a subject data which was measured using a motion capture system. A torque around the axis of the wheelchair was also measured to estimate the force at the contact area between the hand and the frame in the simulation. The body model was constructed as the target for the most player numbers class 2.0. As a result of the simulation, the push operation is mainly performed during the shoulder joint flexion operation. The elbow joint extension is also likely to contribute strongly to the pushing of the wheel.