title: Acute painful knee effusion after prolonged sitting: possible causation by a medial plica.
authors: Division of Rheumatology, Drexel University, College of Medicine, Philadelphia, PA, USA.
authors: Heidi
authors: H
authors: Wong
authors: Angel
authors: A
authors: Checa
mesh_terms: D000293:Adolescent; D018771:Arthralgia / Q000000981:diagnostic imaging* / Q000209:etiology*; D001182:Arthroscopy; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery; D011187:Posture; D013582:Synovial Fluid / Q000378:metabolism*; D013583:Synovial Membrane / Q000196:embryology*; D016896:Treatment Outcome; D014463:Ultrasonography