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Symptoms in the early stages Knee pain begins to occur when doing movements, such as walking up and down stairs or sitting with your knees bent. Symptoms will improve when stopping joint use with joint stiffness. Especially when there is a long period of stop motion. When you begin to move your joints, you will feel the rubbing of the bones or a loud noise in the joints.
When severe osteoarthritis The pain will be more intense. Difficulty straightening or bending the knee joint Thigh muscles are atrophy, knee joints are bent, loose or distorted. making walking and daily life difficult and have pain when walking or moving
Thank you source:
Faculty of Medicine Ramathibodi Hospital Mahidol University