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[The function of the coracoacromial ligament].

R Putz1, J Liebermann, A Reichelt

  • 1Anatomisches Institut, Universität Freiburg im Breisgau, BRD.

Acta Anatomica
|January 1, 1988
PubMed
Summary

The coracoacromial ligament acts as a dynamic brace, providing superior support to the acromion over the coracoid process. This study reveals its crucial role in scapular stability under tension.

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Area of Science:

  • Orthopedics
  • Biomechanics
  • Anatomy

Context:

  • The shoulder joint's complex anatomy and biomechanics are critical for upper limb function.
  • Understanding the role of stabilizing structures like the coracoacromial ligament is essential for diagnosing and treating shoulder pathologies.

Purpose:

  • To investigate the mechanical function of the coracoacromial ligament.
  • To quantify the ligament's contribution to the stability of the scapular processes.

Summary:

  • Strain gauges measured scapular process distortion under applied tension (50 or 100 N) in 8 cadaveric scapulae.
  • Division of the coracoacromial ligament resulted in greater acromial distortion compared to the coracoid process.
  • The coracoacromial ligament functions as a dynamic brace, offering greater stabilization to the acromion.

Impact:

  • This research clarifies the coracoacromial ligament's role as a dynamic stabilizer, influencing our understanding of scapular mechanics.
  • Findings have implications for treating shoulder injuries and improving surgical techniques affecting the acromioclavicular joint.

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