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Updated: Aug 26, 2025

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
Published on: April 11, 2018
Knee joint prototype based on cam mechanism - design and video analysis
1Department of Fundamentals of Machine Design and Mechatronic Systems K61W10D07, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland.
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.
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