If your knee is swollen, it's also called an infused knee. Swelling happens when fluid builds up around or behind the joint in your knee. An infused knee may also be called an effusion in your knee ...

A recent meta-analysis of 217 trials cited by the Times found that aerobic activity—like swimming, cycling, or brisk ...

Septic arthritis of the knee involves a sudden, severe infection in one or both knee joints. Without treatment, it can impair mobility, lead to permanent damage, or even be fatal. Septic arthritis is ...

About one in four adults experience chronic knee pain, though its prevalence continues to rise—even among younger people, ...

Knee pain when kneeling can be due to a number of conditions, such as bursitis, arthritis, and patellar tendonitis. Treatments can depend on the underlying cause. Kneeling aggravates knee pain because ...

Q I was on the couch with my right leg on an ottoman when our black Lab rammed into the inside of my knee. The next day, it really hurt ...

Transient synovitis and septic arthritis both affect the legs or hips and typically occur in children. One resolves on its own, but the other can be life threatening. Transient synovitis, also called ...