Reference scores for the functional task items used in Part-D of Comprehensive knee osteoarthritis index (CKOAI)

the eight functional tasks namely, squatting, single limb stance (for right and left foot), turn 90º (right and left side), turn 180º (right and left side), stair climbing, gait speed, chair sit to stand and floor sit to stand

八个功能性任务，具体包括蹲下、单腿站立（右侧和左侧）、转身90度（右侧和左侧）、转身180度（右侧和左侧）、爬楼梯、步速、从椅子上起身以及从地面起身。