What is a large joint effusion of the knee?

A large joint effusion of the knee refers to an abnormal accumulation of fluid in the knee joint space, often resulting from injury, inflammation, or underlying conditions such as Arthritis or infection. It can cause swelling, pain, and reduced range of motion in the knee. Diagnosis typically involves physical examination and imaging studies, while treatment may include rest, ice, compression, elevation, or aspiration to remove excess fluid.