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How is joint aspiration performed?
The skin over the joint is cleaned using a liquid, typically an iodine solution (Betadine). Local anesthetic is used in the area of the joint; either by injection, a topical liquid coolant, or both. A needle with a syringe attached is inserted within the joint and joint fluid is drawn back under suction (aspirated) into the syringe. For certain conditions, the doctor will also inject medication into the joint after fluid removal. The needle is then removed and a Band-Aid or dressing is applied over the entry point.
What are complications of joint aspiration?
Complications of joint aspiration are uncommon. Possible complications include a reaction to the local anesthetic, local bruising or, minor bleeding into the joint. If cortisone is used, there may be loss of pigment in the skin (a light-colored spot may develop). A rare but serious complication of joint aspiration is infection of the joint (septic arthritis).
If cortisone-related medications (corticosteroids) are injected into the joint, additional uncommon complications include inflammation in the joint as a result of the medication crystallizing, shrinkage (atrophy) or loss of pigment of skin at the injection site, increased blood sugar (worsening of diabetes mellitus), and aggravation of preexisting infection elsewhere in the body. If multiple injections with corticosteroids are given too frequently, it is possible to develop systemic side effects (side effects throughout the body), such as weight gain, puffy face and trunk, and easy bruising. Injection of hyaluronic acid derivatives may cause local inflammation and swelling of the joint due to a reaction to the medication.
Medically reviewed by Aimee V. HachigianGould, MD; American Board of Orthopaedic Surgery
"Joint aspiration or injection in adults: Technique and indications"