Self-arthrocentesis in a man with joint pain.
D000368:Aged; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology; D008297:Male; D010146:Pain / Q000209:etiology* / Q000503:physiopathology; D019152:Paracentesis / Q000009:adverse effects*; D012648:Self Care / Q000009:adverse effects*