Anterior shoulder instability: correlation between magnetic resonance arthrography, ultrasound arthrography and intraoperative findings

Ultrasound Med Biol. 2012 Apr;38(4):551-60. doi: 10.1016/j.ultrasmedbio.2011.12.021.

Abstract

The purpose of the present study was to determine ultrasound (US) arthrography diagnostic accuracy in patients with recurrent shoulder dislocation by comparing US arthrography and magnetic resonance arthrography (MRA) with intraoperative findings. Fifty-six consecutive patients with diagnosis of chronic anterior instability of the shoulder were evaluated for assessment of bone and soft tissue lesions by three radiologists. Twenty-five cases were confirmed by surgery. Sensitivity, specificity, inter- and intraobserver agreement were calculated. Ultrasound sensitivity ranged from 20% to 100% and specificity from 25% to 90%. MRA sensitivity ranged from 80% to 100% and specificity from 50% to 100%. Interobserver agreement was good for MRA (0.54-0.70) and fair for US arthrography (0.19-0.40). Despite a higher interobserver variability for US arthrography than for MRA, our results indicate that US is capable of demonstrating bone and soft tissue lesions related to chronic instability of the shoulder in the presence of intra-articular fluid.

Publication types

  • Comparative Study

MeSH terms

  • Adolescent
  • Adult
  • Contrast Media
  • Female
  • Gadolinium DTPA
  • Humans
  • Joint Instability / diagnosis*
  • Joint Instability / diagnostic imaging*
  • Joint Instability / surgery
  • Magnetic Resonance Imaging / methods*
  • Male
  • Middle Aged
  • Sensitivity and Specificity
  • Shoulder Joint*
  • Ultrasonography

Substances

  • Contrast Media
  • Gadolinium DTPA