@citimedny: Knee aspiration (also called arthrocentesis) is a procedure in which a doctor uses a sterile needle to remove fluid from the knee joint. It is done when excess fluid builds up due to conditions such as injury, arthritis, gout, or infection. The fluid may cause pain, swelling, and reduced movement. Doctors perform knee aspiration to help diagnose the cause of the swelling by testing the fluid and to relieve pressure, reduce pain, and improve joint movement. Injured? Call or text to book your appointment (516) 800-9396 📍40+ locations across NY & NJ #nyc #injurycare #injection #orthopedics