OBJECTIVE: Acromioclavicular joint injuries are usually diagnosed by clinical and radiographic assessment with the Rockwood classification, which is crucial for treatment planning. In view of the implementation of MRI for visualization of the acromioclavicular joint, the purpose of this study was to describe the MRI findings of acromioclavicular joint dislocation in comparison with the radiographic findings. SUBJECTS AND METHODS: Forty-four patients with suspected unilateral acromioclavicular joint dislocation after acute trauma were enrolled in this prospective study. All patients underwent digital radiography and 1-T MRI with a surface phased-array coil. MRI included coronal proton density-weighted turbo spin-echo and coronal 3D T1-weighted fast field-echo water-selective sequences. The Rockwood classification was used to assess acromioclavicular joint injuries at radiography and MRI. An adapted Rockwood classification was used for MRI evaluation of the acromioclavicular joint ligaments. The classifications of acromioclavicular joint dislocations diagnosed with radiography and MRI were compared. RESULTS: Among 44 patients with Rockwood type I-IV injuries on radiographs, classification on radiographs and MR images was concordant in 23 (52.2%) patients. At MRI, the injury was reclassified to a less severe type in 16 (36.4%) patients and to a more severe type in five (11.4%) patients. Compared with the findings according to the original Rockwood system, with the adapted system that included MRI findings, additional ligamentous lesions were found in 11 (25%) patients. CONCLUSION: In a considerable number of patients, the MRI findings change the Rockwood type determined with radiography. In addition to clinical assessment and radiography, MRI may yield important findings on ligaments that may influence management.
OBJECTIVE:Acromioclavicular joint injuries are usually diagnosed by clinical and radiographic assessment with the Rockwood classification, which is crucial for treatment planning. In view of the implementation of MRI for visualization of the acromioclavicular joint, the purpose of this study was to describe the MRI findings of acromioclavicular joint dislocation in comparison with the radiographic findings. SUBJECTS AND METHODS: Forty-four patients with suspected unilateral acromioclavicular joint dislocation after acute trauma were enrolled in this prospective study. All patients underwent digital radiography and 1-T MRI with a surface phased-array coil. MRI included coronal proton density-weighted turbo spin-echo and coronal 3D T1-weighted fast field-echo water-selective sequences. The Rockwood classification was used to assess acromioclavicular joint injuries at radiography and MRI. An adapted Rockwood classification was used for MRI evaluation of the acromioclavicular joint ligaments. The classifications of acromioclavicular joint dislocations diagnosed with radiography and MRI were compared. RESULTS: Among 44 patients with Rockwood type I-IV injuries on radiographs, classification on radiographs and MR images was concordant in 23 (52.2%) patients. At MRI, the injury was reclassified to a less severe type in 16 (36.4%) patients and to a more severe type in five (11.4%) patients. Compared with the findings according to the original Rockwood system, with the adapted system that included MRI findings, additional ligamentous lesions were found in 11 (25%) patients. CONCLUSION: In a considerable number of patients, the MRI findings change the Rockwood type determined with radiography. In addition to clinical assessment and radiography, MRI may yield important findings on ligaments that may influence management.
Authors: M M Schneider; M Balke; P Koenen; M Fröhlich; A Wafaisade; B Bouillon; M Banerjee Journal: Knee Surg Sports Traumatol Arthrosc Date: 2014-11-16 Impact factor: 4.342
Authors: Marie Faruch Bilfeld; Franck Lapègue; Hélène Chiavassa Gandois; Marie Aurélie Bayol; Nicolas Bonnevialle; Nicolas Sans Journal: Eur Radiol Date: 2016-05-28 Impact factor: 5.315
Authors: Gunnar Jensen; Peter J Millett; Dimitri S Tahal; Mireille Al Ibadi; Helmut Lill; Jan Christoph Katthagen Journal: Int Orthop Date: 2017-04-28 Impact factor: 3.075
Authors: Rafael Salomon Silva Faria; Fabiano Rebouças Ribeiro; Bruno de Oliveira Amin; Antonio Carlos Tenor Junior; Miguel Pereira da Costa; Cantídio Salvador Filardi Filho; Cleber Gonçalves Batista; Rômulo Brasil Filho Journal: Rev Bras Ortop Date: 2015-04-24