Knee joint prototype based on cam mechanism – design and video analysis

Michał Olinski

Computer Methods in Biomechanics and Biomedical Engineering, 2023, vol. 26, issue 14, 1691-1701

Abstract: The paper is focused on a design of mechanism accurately reproducing a complex motion in the sagittal plane of a human knee joint. The desired movement is modelled by applying specially designed shapes of cooperating cam elements based on the fixed and moving centroids of knee joint’s instantaneous centre of rotation. The mechanism’s CAD model and prototype are built using 3D printed elements, providing the possibility of interchanging the elements with cam profiles and adjusting the mechanism’s movement to individual needs. The mechanism movement is measured by analysing a video in Matlab and tracking colour markers on the prototype.

Date: 2023
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DOI: 10.1080/10255842.2022.2132819

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