The term 'polycentric' is widely used to describe the kinematics of the knee joint, but its application is a source of significant misunderstanding. This study traces the term's origin to a 1971 paper by Gunston and analyzes the problems arising from ...
The term 'polycentric' is widely used to describe the kinematics of the knee joint, but its application is a source of significant misunderstanding. This study traces the term's origin to a 1971 paper by Gunston and analyzes the problems arising from its literal interpretation and translation. This study found that the term is misleading, as the knee joint does not have multiple centers of rotation but rather a single axis that translates along a defined pathway.
This misinterpretation is particularly prevalent in the field of prosthetics, where 'polycentric' is often incorrectly associated with the multiple mechanical axes of prosthetic knees. To mitigate this long-standing confusion, this study proposes a more accurate translation that better reflects the true biomechanics of the knee joint.