title: Comparative study of magnetic resonance imaging (MRI) parameters in a Southeast Asian population with symptomatic patellofemoral instability.
abstract: BACKGROUND
  MRI is performed for evaluation of soft tissue injuries associated with patellar instability.
  
  
  METHODS
  Retrospective review of MRI parameters from a study group of 64 patients with symptomatic patellofemoral instability and a control group of 64 patients with acute knee injury without concomitant patellofemoral instability was performed.
  
  
  RESULTS
  The study group demonstrated statistically significant increase (P<0.05) in all the MRI measurements compared to the control group. There were good inter-observer correlations between surgeon and radiologist for all radiological measurements.
  
  
  CONCLUSIONS
  It is prudent to exercise caution in interpreting radiological parameters in different ethnic groups bearing as current treatment protocols are not ethnic-group specific.
authors.affiliation: Department of Diagnostic Radiology, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308 433, Singapore. Electronic address: drlimweiyang@yahoo.com.
authors.forename: Wei Yang
authors.initials: WY
authors.lastname: Lim
authors.affiliation: Department of Orthopaedic Surgery, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308 433, Singapore.
authors.forename: Mui-Hong
authors.initials: MH
authors.lastname: Lim
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging* / Q000503:physiopathology; D007718:Knee Injuries / Q000000981:diagnostic imaging*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D057071:Patellofemoral Joint / Q000000981:diagnostic imaging* / Q000293:injuries / Q000503:physiopathology; D012189:Retrospective Studies; D017695:Soft Tissue Injuries / Q000000981:diagnostic imaging*; D055815:Young Adult