title: Meniscal tears with displaced fragments: common patterns on magnetic resonance imaging.
abstract: OBJECTIVE
  To identify the commonly occurring patterns of small displaced tears of the menisci of the knee on magnetic resonance imaging (MRI).
  
  
  METHODS
  A retrospective review of knee MRI scans over 16 months at two hospitals provided 70 studies with 73 displaced meniscal fragments for analysis. Fragment position was recorded.
  
  
  RESULTS
  Two common positions were identified for medial fragments. For the medial meniscus, 93% of fragments were positioned medially or posterolaterally. The medially displaced fragments were positioned in either the superior or inferior recesses. Lateral meniscal fragments were more evenly dispersed.
  
  
  CONCLUSIONS
  The pattern of small displaced tears of the medial meniscus is highly predictable. Awareness of the typical locations of these fragments should aid the reporter in identifying these lesions on MRI.
authors: University of Oxford Medical School, Oxford, UK.
authors: Andrew
authors: A
authors: McKnight
authors: Jane
authors: J
authors: Southgate
authors: Andrew
authors: A
authors: Price
authors: Simon
authors: S
authors: Ostlere
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D050724:Fractures, Cartilage / Q000473:pathology*; D006801:Humans; D007718:Knee Injuries / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008592:Menisci, Tibial / Q000473:pathology*; D008875:Middle Aged; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D000070600:Tibial Meniscus Injuries; D055815:Young Adult