The Baker’s cyst or popliteal cyst occurs when ... This fluid fills a water-filled sack in the back of the knee called the popliteal bursa and as a result, a bulge behind the knee occurs which ...

Behind-the-knee pain could be due to muscle strain or arthritis—or something far more serious. Orthopedic experts say these are the most common causes.

Ultrasonography-identified features like osteophytes and cartilage damage show promise in diagnosing knee osteoarthritis and ...