title: Vacuum phenomenon simulating meniscal or cartilaginous injury of the knee at MR imaging.
abstract: In five patients undergoing magnetic resonance imaging of the knee after athletic injuries, the authors identified a vacuum phenomenon that simulated medial meniscal or joint compartment cartilaginous abnormality. A cadaveric knee was injected with air, and the findings were re-created. The presence of air or gas between the articular surfaces of the tibia and femur can simulate meniscal or cartilaginous injury.
authors.affiliation: Department of Radiology, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, NC 27103.
authors.forename: M E
authors.initials: ME
authors.lastname: Shogry
authors.forename: T L
authors.initials: TL
authors.lastname: Pope
mesh_terms: D000293:Adolescent; D000328:Adult; D000388:Air; D001265:Athletic Injuries / Q000175:diagnosis* / Q000473:pathology; D001490:Basketball / Q000293:injuries; D002358:Cartilage, Articular / Q000293:injuries* / Q000473:pathology; D003951:Diagnostic Errors; D005269:Femur / Q000473:pathology; D005538:Football / Q000293:injuries; D006801:Humans; D007718:Knee Injuries / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008592:Menisci, Tibial / Q000473:pathology; D013977:Tibia / Q000473:pathology; D000070600:Tibial Meniscus Injuries; D014618:Vacuum