Introduction to Swollen Knees
A swollen knee joint (Picture 1) is a common symptom arising either from knee or other disorders. Knee swelling can originate from almost any structure forming the joint, like ligaments, synovial membrane, bursae, etc., or from fluid accumulating within the knee, such as blood or pus. A swollen knee, for example from knee effusion, is not always painful. Though all knee swellings do not require urgent treatment, there are a few conditions, like septic arthritis, in which lack of prompt treatment can cause lifelong disability. Hence, it is always better to consult a physician or orthopedist, to find the exact cause of knee swelling.
Picture 1: Swollen left knee