A joint aspiration is a procedure that removes fluid from a knee joint. This procedure can relieve pain and pressure and prevents the formation of infection. Ultrasound Guidance helps the doctor place the needle in the right spot and avoid damage to the joint. Using intra articular knee injections, a physician injects medicine into the joint, reducing pain and improving function. These treatments may reduce the pain associated with knee osteoarthritis (OA). A patient's pain, stiffness, and range