The most common cause of a swollen knee is inflammation. The cells which line the knee joint are arranged in a very thin layer called the synovium. If the synovium is irritated it will produce more fluid than normal resulting in a swollen knee.
Causes of a Swollen Knee:
CPPD – psudeogout
Trauma / Injury
The most common cause of a swollen knee joint is osteoarthritis. Osteoarthritis indicates that the cartilage within the knee joint is wearing thin. The arthritic process also changes the chemicals within the knee and creates a rather hostile environment within the knee joint. This causes the synovium to become irritated and produce a significant amount of fluid. Occasionally that fluid will migrate to the back of the knee and cause swelling in the back of the knee.
Gout is a relatively unusual cause of painful swelling within the knee. A swollen knee because of gout is typically far more painful than the swelling associated with mild to moderate osteoarthritis. CPPD or pseudogout can also lead to swelling within the knee joint. The pain is not typically as severe as it is with gout or severe osteoarthritis.
If your knee is swollen and you don’t know why or if the swelling persists, please contact our offices in Joplin, MO. We can schedule a consultation with one of our orthopedic specialists for diagnosis and treatment.