Critical shoulder angle: what do radiologists need to know?

  • Amélie Loriaud
  • Sylvain Bise
  • Philippe Meyer
  • Anselme Billaud
  • Benjamin Dallaudiere
  • Alain Silvestre
  • Lionel PesquerEmail author
Review Article


The critical shoulder angle (CSA) constitutes a straightforward and highly reproducible tool. Degenerative rotator cuff tears (RCT) are associated with a significantly larger CSA. In this review, the most relevant features of the CSA are summarized: (1) the relationship between the CSA and RCT pathophysiology, (2) accurate measurement of the CSA according to various imaging modalities, (3) the contribution of the CSA in predicting the occurrence of RCT, and (4) RCT recurrence after surgical repair.


Shoulder X-rays MRI Rotator cuff injuries 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© ISS 2019

Authors and Affiliations

  • Amélie Loriaud
    • 1
  • Sylvain Bise
    • 1
  • Philippe Meyer
    • 1
  • Anselme Billaud
    • 2
  • Benjamin Dallaudiere
    • 1
  • Alain Silvestre
    • 1
  • Lionel Pesquer
    • 1
    Email author
  1. 1.MSK Imaging DepartmentClinique du sport, Bordeaux-MérignacMerignacFrance
  2. 2.Orthopedic Surgery DepartmentClinique du sport, Bordeaux-MérignacMérignacFrance

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