title: Ultrasound of the coracoclavicular ligaments in the acute phase of an acromioclavicular disjonction: Comparison of radiographic, ultrasound and MRI findings.
abstract: OBJECTIVE
  Acromioclavicular joint injuries are typically diagnosed by clinical and radiographic assessment with the Rockwood classification, which is crucial for treatment planning. The purpose of this study was to describe how the ultrasound findings of acromioclavicular joint injury compare with radiography and MRI findings.
  
  
  METHODS
  Forty-seven patients with suspected unilateral acromioclavicular joint injury after acute trauma were enrolled in this prospective study. All patients underwent digital radiography, ultrasound and 3T MRI. A modified Rockwood classification was used to evaluate the coracoclavicular ligaments. The classifications of acromioclavicular joint injuries diagnosed with radiography, ultrasound and MRI were compared. MRI was used as the gold standard.
  
  
  RESULTS
  The agreement between the ultrasound and MRI findings was very good, with a correlation coefficient of 0.83 (95 % CI: 0.72-0.90; p < 0.0001). Ultrasound detected coracoclavicular ligament injuries with a sensitivity of 88.9 %, specificity of 90.0 %, positive predictive value of 92.3 % and negative predictive value of 85.7 %. The agreement between the ultrasound and radiography findings was poor, with a correlation coefficient of 0.69 (95 % CI: 0.51-0.82; p < 0.0001).
  
  
  CONCLUSIONS
  Ultrasound is an effective examination for the diagnostic work-up of lesions of the coracoclavicular ligaments in the acute phase of an acromioclavicular injury.
  
  
  CONCLUSIONS
  • Ultrasound is appropriate for acute acromioclavicular trauma due to its accessibility. • Ultrasound contributes to the diagnostic work-up of acute lesions of the coracoclavicular ligaments. • Ultrasound is appropriate in patients likely to benefit from surgical treatment. • Ultrasound could be a supplement to standard radiography in acute acromioclavicular trauma.
authors.affiliation: Service de Radiologie, CHU Toulouse-Purpan, place du docteur Baylac, 31059, Toulouse Cedex 9, France. mariefaruch@hotmail.com.
authors.forename: Marie
authors.initials: M
authors.lastname: Faruch Bilfeld
authors.affiliation: Service de Radiologie, CHU Toulouse-Purpan, place du docteur Baylac, 31059, Toulouse Cedex 9, France.
authors.forename: Franck
authors.initials: F
authors.lastname: Lapègue
authors.affiliation: Service de Radiologie, CHU Toulouse-Purpan, place du docteur Baylac, 31059, Toulouse Cedex 9, France.
authors.forename: Hélène
authors.initials: H
authors.lastname: Chiavassa Gandois
authors.affiliation: Service de Radiologie, CHU Toulouse-Purpan, place du docteur Baylac, 31059, Toulouse Cedex 9, France.
authors.forename: Marie Aurélie
authors.initials: MA
authors.lastname: Bayol
authors.affiliation: Service d'Orthopédie, CHU Toulouse-Purpan, place du docteur Baylac, 31059, Toulouse Cedex 9, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Bonnevialle
authors.affiliation: Service de Radiologie, CHU Toulouse-Purpan, place du docteur Baylac, 31059, Toulouse Cedex 9, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Sans
mesh_terms: D000173:Acromioclavicular Joint / Q000000981:diagnostic imaging* / Q000473:pathology; D000328:Adult; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging* / Q000473:pathology; D008023:Ligaments, Articular / Q000000981:diagnostic imaging* / Q000293:injuries; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011856:Radiographic Image Enhancement / Q000379:methods*; D012680:Sensitivity and Specificity; D014463:Ultrasonography / Q000379:methods*; D055815:Young Adult
keywords: Acromioclavicular joint; Coracoclavicular ligament; MRI; Rookwood classification; Ultrasound