What is efusion of the knee?

Answer 1

Effusion of the knee, commonly referred to as "water on the knee," is the accumulation of excess fluid in the knee joint space. This condition can result from various causes, including injury, inflammation, infection, or underlying medical conditions such as Arthritis. Symptoms may include swelling, pain, and limited range of motion in the knee. Diagnosis typically involves physical examination and imaging, while treatment may range from rest and ice to drainage of the fluid or addressing the underlying cause.