What is joint aspiration?
Joints are connections between two or more bones. They allow us to move our bodies. If a joint is swollen or inflamed due to an injury or disease, more fluid may build up inside it. The medical term for this is "joint effusion."
Joint aspiration involves using a thin hollow needle to take some of the fluid out of the joint. This procedure, also known as arthrocentesis, is one of the more common procedures used for muscle and bone problems. It is most often done at the knee or shoulder.