A Progression of Abnormal Knee Kinmatics during a Leg Press Activity in Primary Knee Osteoarthritis: a 3d-to-2d Registration Technique

INTRODUCTION: Knee osteoarthritis (OA) is a disabling disorder affecting up to 13% of individuals aged 65 years and older [1]. The medial compartment is most commonly affected. Many researchers suggest contributing biomechanical factors in the development of knee OA include body weight, knee alignment, muscle strength, knee kinematics, and strenuous activities [1-2]. Although gait and mechanical analyses are suggestive, no in vivo study to date has revealed the reason why the medial compartment is most commonly affected. There is little knowledge on knee pathokinematics as related to the development and progression of the knee OA. Therefore, the aim of this study was to determine if knee kinematics change with knee OA disease progression.