title: Water on the knee: cysts, bursae, and recesses.
abstract: Many synovial-lined cavities occur around the knee, and MR imaging is capable of demonstrating the precise anatomic relationships of these spaces. Knowledge of normal anatomy, however, is necessary to accurately assess abnormal, fluid-filled structures. This article reviews the MR imaging appearance of normal and pathologic bursae and joint recesses, and the appearance of common cystic masses. Distinguishing features of several noncystic lesions occurring around the knee also are discussed because these can mimic bursae, recesses, and cysts.
authors.affiliation: Division of Musculoskeletal Radiology, Department of Radiology, University of Virginia Health System, Charlottesville, Virginia, USA.
authors.forename: J L
authors.initials: JL
authors.lastname: Morrison
authors.forename: P A
authors.initials: PA
authors.lastname: Kaplan
mesh_terms: D001834:Body Water; D001845:Bone Cysts / Q000473:pathology*; D006801:Humans; D007592:Joint Diseases / Q000473:pathology; D007719:Knee Joint / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D012983:Soft Tissue Neoplasms