Knee osteoarthritis requires the gradual deterioration of cartilage, that is the cushion which allows for sleek joint actions, during the knee joint. As cartilage thins and wears away, bones throughout the joint might rub from each other, leading to pain, swelling, and minimized mobility. Clicking sounds while in the knee, https://www.theorthopaedicandpainpractice.com/understanding-knee-pain-and-how-to-manage-it-in-singapore/