Abstract:

BACKGROUND: At present, the evaluation of prosthesis stays in subjective feelings, lacking of an objective evaluation system. To set up the online prosthetic parameters detection system of body motion is of great significance to the evaluation of the prosthetic performance and design of prothesis.
OBJECTIVE: By realizing various gait patterns of lower limb prosthesis and performing analysis of kinematics and dynamics data, to evaluate its simulation degree. 
METHODS: According to the principle of bionics, we simplified the lower limb prosthesis into a four-bar and four-axis mechanical model. Using various gait patterns, the platform drove prostheses walking. We built a dynamical test platform which measured ground counterforce and the shear stress in real-time.
RESULTS AND CONCLUSION: During the gait movement of prostheses, the data curve of hips and knees was in accordance with normal gait data, and the ground counterforce and the shear stress were also close to those of the normal people. The prosthetic gait experimental platform stimulates the lower limb prosthesis gait movement, and acquires a number of kinematics and dynamics parameters in real-time, with a high simulation degree.