Final Report
Knee Replacements and 4 Bar Linkage Knee Analysis
Alicja Jagiełło
2091431J
Abstract
Knee replacements are used worldwide and many possible types and designs of prosthesis are fitted for individual needs of patients. Special attention is paid to stability of the mechanisms as well as to the cosmetics and ability to adjust to the changing position of the knee and the gait applied.
Currently the most common replacement is the polycentric knee replacement incorporating the four bar linkage knee prosthesis. It ensures the satisfactory range of movement and safety of the design. Even though, this type of mechanism is a really good solution for both through-knee…show more content… Currently, one of the best and frequently implanted mechanisms is the four bar linkage knee prosthesis. In many aspects it imitates the human knee joint as it allows similar range and freedom of movement and adjusts its features to the position, velocity and acceleration of the person. Its work is precise and effective considering the significant energy savings during the motion. Therefore, it is a very good solution for people needing knee replacements, but high price calls for cheaper designs.
References
Greene M.P., “Four-bar linkage knee analysis”, Prosthetics and Orthotics International, 1983, 37:1, 15-24
Hobson, D.A., Torfason, F.E., “Computer Optimization of Polycentric Prosthetic Knee Mechanism”, Bulletin of prosthetics research, Spring 1975, BPR-10- 23, 187-201
Radcliffe, C.W., “Above-knee Prosthetics”, Prosthetics and Orthotics International, 1977, 1, 146-160
Ӧberg, K., “Knee mechanisms for through-knee prostheses”, Prosthetics and Orthotics International, 1983, 7, 107-112
“Knee Replacement Knee Materials”, http://bonesmart.org/knee/knee-replacement-implant-materials/, Retrieved 14/03/2015
MatLab
