APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Joint aspiration is a procedure to remove fluid from the space around a joint using a needle and syringe. This is usually done under a local anesthetic to relieve swelling and/or to obtain fluid for analysis to diagnose a joint disorder or problem. Joint aspiration is most often done on the knee.

Detailed explanation-2: -Needles, 18 or 20 gauge and 25 or 27 gauge. Patients who are morbidly obese might require a 21-gauge spinal needle for arthrocentesis.

Detailed explanation-3: -Arthrocentesis, the procedure used to do a synovial fluid analysis, may also be done to remove excess fluid from a joint. Normally, there is only a small amount of synovial fluid between the joints. If you have a joint problem, extra fluid can build up, causing pain, stiffness, and inflammation.