https://doi.org/10.24552/00002154 ©青森県立保健大学
Change in mechanical axes during dynamic motion : A literature review
Toshihiro Haba and Hiroyasu Iwatsuki
Department of Physical Therapy, Faculty of Health Sciences, Aomori University of Health and Welfare
（Recieved March 11, 2020; Accepted June 17, 2020）
ABSTRACT
［Objective］Mechanical axis (MA) is used as an index of knee joint deformation. The present reviewaimed to provide the usefulness of MA for a motion analysis based on a literature search about MA during a motion.
［Methods］The literature review was undertaken using Japanese and English databases. The key words were "Mechanical axis", "Mikulicz line", and "Load bearing axis". The literatures searched in this review involved an evaluation item related to MA during a motion or the angle between MA and a perpendicular line.
［Results］After selected 124 literatures, 10 literatures were evaluated. The literatures of MA during the motion were consisted of 2 literatures on one-leg-standing and 7 literatures on walking. There was only one literature on the angle between MA and a perpendicular line while an upright position.
［Conclusions］Although there were few literatures about MA during the motion, it was suggested that MA changed during the motion, including knee joint deformation, one-leg-standing, and walking. The biomechanical analysis of the angle between MA and the perpendicular line during motions may be contributed as the useful tool for the motion analysis.
Key words: mechanical axis, biomechanical analysis, literature review