title: Hypodermic needle separation during arthrocentesis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000503:physiopathology; D005260:Female; D006801:Humans; D008875:Middle Aged; D009339:Needles; D013396:Suction / Q000009:adverse effects*; D013582:Synovial Fluid / Q000503:physiopathology*