Subacromial impingement syndrome

J Am Acad Orthop Surg. 2011 Nov;19(11):701-8. doi: 10.5435/00124635-201111000-00006.


Subacromial impingement syndrome (SIS) represents a spectrum of pathology ranging from subacromial bursitis to rotator cuff tendinopathy and full-thickness rotator cuff tears. The relationship between subacromial impingement and rotator cuff disease in the etiology of rotator cuff injury is a matter of debate. Both extrinsic compression and intrinsic degeneration may play a role. Management includes physical therapy, injections, and, for some patients, surgery. There remains a need for high-quality studies of the pathology, etiology, and management of SIS.

Publication types

  • Review

MeSH terms

  • Debridement
  • Glucocorticoids / administration & dosage
  • Humans
  • Injections, Intra-Articular
  • Magnetic Resonance Imaging
  • Physical Examination
  • Shoulder Impingement Syndrome / diagnosis
  • Shoulder Impingement Syndrome / etiology
  • Shoulder Impingement Syndrome / pathology
  • Shoulder Impingement Syndrome / therapy*
  • Shoulder Pain / etiology
  • Treatment Outcome


  • Glucocorticoids