arthrocentesis /ar·thro·cen·te·sis/ (ahr″thro-sen-te´sis) puncture of a joint cavity with aspiration of fluid.
Arthrocentesis
arthrocentesis
arthrocentesis
ar·thro·cen·te·sis (är thr -s n-t  s s)n. The surgical puncture and aspiration of a joint. |
Arthrocentesis
A procedure in which the doctor inserts a needle into the patient's joint to withdraw fluid for diagnostic testing or to drain infected fluid from the joint.
Mentioned in: Infectious Arthritis
arthrocentesis
[är′thrōsintē′sis]
Etymology: Gk, arthron + kentesis, pricking
the puncture of a joint with a needle and the withdrawal of fluid, performed to obtain samples of synovial fluid for diagnostic purposes. It may also be used to instill medications and to remove fluid from joints to simply relieve pain. A local anesthetic is usually administered; surgical asepsis is observed in the procedure. Normal synovial fluid is a clear, straw-colored, slightly viscous liquid that forms a white, viscous clot when mixed with glacial acetic acid; if inflammation is present, as in rheumatoid arthritis, the fluid is watery and turbid, and its mixture with glacial acetic acid results in a flocculent, easily broken clot. The number of leukocytes, especially polymorphonuclear cells, and the protein content are increased, and the glucose level is decreased if inflammation is present. Synovial fluid samples are also cultured and examined microscopically to diagnose a septic process, such as bacterial arthritis.
arthrocentesis
surgical puncture of a joint cavity for aspiration of fluid, usually for diagnostic purposes.
arthrocentesis
Closed joint aspiration, joint tap Orthopedics A procedure in which a needle is introduced into a joint and fluid removed for diagnostic or therapeutic purposes Diagnostic indications Idiopathic joint effusions or arthritic
complaints, suspected infectious arthritis, suspected gout, monitoring of antibiotic response in Pt with septic arthritis Therapeutic indications Decompress painful joint effusion, evacuate pus from septic joint, remove inflammatory infiltrate and
crystals in Pt with gout, inject corticosteroids
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