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Subacromial Space Anatomy

 Type 1 acromioin

Type 1

  • Flat acromial undersurface.



Type 2 acromioin

Type II

  • Downward curved acromial undersurface.
  • Most common
Type 3 acromioin

Type III

  • Hooked acromial undersurface.
  • Associated with increased incidence of Rotator Cuff Tear.



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