title: Atraumatic lateral collateral ligament complex signal abnormalities by magnetic resonance imaging in patients with osteoarthrosis of the knee.
abstract: OBJECTIVE
  To determine the prevalence of atraumatic lateral collateral ligament complex (LCLC) abnormalities by magnetic resonance imaging (MRI) in patients with osteoarthrosis (OA) of the knee.
  
  
  METHODS
  Magnetic resonance imaging scans in 96 subjects (25 with OA and 71 without OA) were retrospectively reviewed for the presence and severity of LCLC signal abnormalities. Abnormalities in the MRI scans of subjects with OA were compared with those of subjects without OA using chi2 test and the Mantel-Haenszel test for trend.
  
  
  RESULTS
  Lateral compartment OA (23 of 25) was associated with abnormalities of the LCLC in 96% (22 of 23 subjects had fibular collateral ligament abnormalities, P < 0.0001). Medial compartment OA (25 of 25) was associated with abnormalities of the LCLC in 88% (22 of 25 subjects had fibular collateral ligament abnormalities, P < 0.0001). There was a positive trend for severity of MRI abnormalities with severity of OA (P < 0.0001 to P = 0.04).
  
  
  CONCLUSIONS
  Lateral collateral ligament complex MRI signal abnormalities are common in patients with OA, in the absence of trauma.
authors.affiliation: Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, MD 21287, USA.
authors.forename: Yung H
authors.initials: YH
authors.lastname: Chen
authors.forename: John A
authors.initials: JA
authors.lastname: Carrino
authors.forename: Siva P
authors.initials: SP
authors.lastname: Raman
authors.forename: William B
authors.initials: WB
authors.lastname: Morrison
authors.forename: Laura M
authors.initials: LM
authors.lastname: Fayad
mesh_terms: D016477:Artifacts; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D017888:Medial Collateral Ligament, Knee / Q000293:injuries / Q000473:pathology*; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000473:pathology*