Biomechanical evaluation of degree of freedom of movements of a novel high-flexion knee for its suitability in eastern lifestyles.

The total knee arthroplasty is the end-stage surgical procedure for pain relief in degenerative diseases such as arthritis. There have been many models designed in the five to six decades of arthroplasty history. This research has helped us in designing a new artificial high-flexion knee, which emphasizes a high flexion-extension range of over 125 degrees. This range provides comfort while squatting, even after the total knee replacement. This article discusses the usage of this novel design in the day-to-day activities of people in the Eastern world. The standard flexion-extension level of a normal knee was taken into account and verified on the new design. The results have been satisfactory, and the models have been proven to provide comfort during partial squatting. Our results show that this novel high-flexion knee provides three degrees of freedom compared with the six degrees of freedom in a natural knee.