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.
Zhaoli Dai, Ph.D., from the Boston University School of Medicine, and colleagues used data from the Osteoarthritis Initiative (OAI) and the Framingham Offspring Osteoarthritis Study to assess how BMI and inflammation might impact the observed association between greater fiber intake and the lower risk for symptomatic knee osteoarthritis.