Kinematics of knee muscles influencing by aging effects as parametric index to OA

Osteoarthritis (OA), a severe knee disease, is caused by the damage of articular cartilage at the end of anatomical structures conjugated to knee joint. It disables people of all ages. Its prevalence is predicted to increase as a result of increasing ages. Integrity analysis of knee joint involves detail study of its total analytical parts. Therefore, present paper focused to the aging effects on major lower limb muscles related to knee kinematics. As vastus medialis, vastus lateralis, rectus femoris and medial head of gastrocnemius muscles are major concerned in knee flexor-extensor motions, the kinematic relations of these four lower limb muscles in aging were experimentally compared and documented.