title: Intra-articular entrapment of the medial collateral ligament: radiographic and MRI findings.
abstract: Displacement of the medial collateral ligament (MCL) into the medial knee joint is an extremely rare finding associated with MCL tears, and is easily diagnosed on magnetic resonance imaging. A case of intra-articular interposition of the MCL during a severe knee injury is presented. A radiolucent "fat stripe" sign and adjacent skin dimpling on radiographs may be relatively specific indicators of this injury.
authors.affiliation: Department of Radiology, Baystate Medical Center, 759 Chestnut Street, Springfield, MA 01199, USA.
authors.forename: J J
authors.initials: JJ
authors.lastname: Patel
mesh_terms: D001175:Arthrography; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis / Q000209:etiology / Q000601:surgery; D007718:Knee Injuries / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D017888:Medial Collateral Ligament, Knee / Q000293:injuries / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D009985:Orthopedics; D012421:Rupture