Use of 3D MR reconstructions in the evaluation of glenoid bone loss: a clinical study

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• 作者：Soterios Gyftopoulos (1)
  Luis S. Beltran (1)
  Avner Yemin (1)
  Eric Strauss (2)
  Robert Meislin (2)
  Laith Jazrawi (2)
  Michael P. Recht (1)
  
• 关键词：Glenoid bone loss ; 3D?MR ; Anterior shoulder instability
• 刊名：Skeletal Radiology
• 出版年：2014
• 出版时间：February 2014
• 年：2014
• 卷：43
• 期：2
• 页码：213-218
• 全文大小：235 KB
• 作者单位：Soterios Gyftopoulos (1)
  Luis S. Beltran (1)
  Avner Yemin (1)
  Eric Strauss (2)
  Robert Meislin (2)
  Laith Jazrawi (2)
  Michael P. Recht (1)
  
  1. Department of Radiology, NYU Langone Medical Center, 660 First Avenue, New York, NY, 10016, USA
  2. Department of Orthopaedic Surgery, NYU Langone Medical Center, Center for Musculoskeletal Care, 333 E. 38th street, New York, NY, 10016, USA
  
• ISSN：1432-2161

文摘

Objective To assess the ability of 3D?MR shoulder reconstructions to accurately quantify glenoid bone loss in the clinical setting using findings at the time of arthroscopy as the gold standard. Materials and methods Retrospective review of patients with MR shoulder studies that included 3D?MR reconstructions (3D?MR) produced using an axial Dixon 3D-T1W-FLASH sequence at our institution was conducted with the following inclusion criteria: history of anterior shoulder dislocation, arthroscopy (OR) performed within 6?months of the MRI, and an estimate of glenoid bone loss made in the OR using the bare-spot method. Two musculoskeletal radiologists produced estimates of bone loss along the glenoid width, measured in mm and %, on 3D?MR using the best-fit circle method, which were then compared to the OR measurements. Results There were a total of 15 patients (13?men, two women; mean age, 28, range, 19-1?years). There was no significant difference, on average, between the MRI (mean 3.4?mm/12.6?%; range, 0-0?%) and OR (mean, 12.7?%; range, 0-0?%) measurements of glenoid bone loss (p--.767). A 95?% confidence interval for the mean absolute error extended from 0.45-.21?%, implying that, when averaged over all patients, the true mean absolute error of the MRI measurements relative to the OR measurements is expected to be less than 2.21?%. Inter-reader agreement between the two readers had an IC of 0.92 and CC of 0.90 in terms of percentage of bone loss. Conclusions 3D?MR reconstructions of the shoulder can be used to accurately measure glenoid bone loss.