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Related Experiment Video

Updated: Apr 24, 2026

Arthroscopic Management of Massive Irreparable Rotator Cuff Tears: Whole Rotator Cable Reconstruction Using Proximal Biceps Tendon Autograft
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Is coracoacromial arch angle a predisposing factor for rotator cuff tears?

Nurdan Cay1, Ozgür Tosun, Cetin Işık

  • 1Department of Radiology, Yıldırım Beyazıt University, School of Medicine, Ankara, Turkey. nurdancay@yahoo.com.

Diagnostic and Interventional Radiology (Ankara, Turkey)
|September 11, 2014
PubMed
Summary

A wider coracoacromial arch angle and narrower acromio-humeral and coraco-humeral distances are associated with rotator cuff tears. These measurements may indicate a predisposition to developing rotator cuff pathology.

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Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Anatomy

Background:

  • Rotator cuff tears are a common cause of shoulder pain and disability.
  • Understanding predisposing factors is crucial for prevention and early intervention.

Purpose of the Study:

  • To determine if the coracoacromial arch angle is a predisposing factor for rotator cuff tears.
  • To evaluate the relationship between specific shoulder measurements and rotator cuff pathology.

Main Methods:

  • Retrospective analysis of shoulder MRI scans from 40 patients with rotator cuff tears and 28 controls.
  • Measurement of acromio-humeral distance, coraco-humeral distance, coracoacromial arch angle, and coracoacromial ligament thickness.

Main Results:

  • Patients with rotator cuff tears had significantly narrower acromio-humeral (7.89 mm vs. 11.15 mm) and coraco-humeral (7.88 mm vs. 11.67 mm) distances compared to controls (P < 0.001).
  • The mean coracoacromial arch angle was significantly larger in patients with rotator cuff tears (132.38° vs. 116.95°, P < 0.001).
  • Coracoacromial ligament thickness did not differ significantly between groups.

Conclusions:

  • Narrower acromio-humeral and coraco-humeral distances are associated with rotator cuff tears.
  • A larger coracoacromial arch angle may serve as a predisposing factor for rotator cuff tears.