ABSTRACT
The sit-to-stand movement is a fundamental activity of daily living and required for an upright posture. Understanding gender differences in the execution of this task may allow additional effective interventions. The purpose of this study was to investigate the biomechanical gender differences in kinematics on the 30-s chair stand test performance in patients with knee osteoarthritis. A 3D 12-camera motion analysis system was used to capture the body motion during the test. Thirty participants with medial knee osteoarthritis were recruited: 15 men and 15 women. A higher valgus angle was found in female participants with statistical significance (p = 0.013), but only in the less painful knee. Likewise, a closer approach of the knees during the movement was notorious. The predominance of upright position with the knee in valgus has implications in knee mechanics. which may allow the definition of different gender rehabilitation strategies.
