The results suggest that alleviating pain is not likely to increase physical activity levels in people with knee osteoarthritis. Although managing pain is an important goal, strategies to increase physical activity should focus on overcoming potentially more crucial barriers, such as lack of knowledge, motivation, and overall sedentary lifestyle.
Joints emit a variety of noises, including popping, snapping, catching, clicking, grinding, grating and clunking. The technical term for these noises is "crepitus", from the Latin "to rattle".
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For hockey great Bobby Orr, a torn knee ligament ended his career at age 30. Orr had more than 17 knee operations, at one point having his meniscus removed—the cartilaginous tissue that helps stabilize and lubricate the knee joint. Now scientists can see in real time just how important the meniscus is.