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Related Experiment Video

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Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact
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Anatomic study of the coracoid process: safety margin and practical implications.

Bernardo Barcellos Terra1, Benno Ejnisman, Eduardo Antônio de Figueiredo

  • 1Department of Orthopaedic Surgery and Sports Medicine, Federal University of São Paulo, Brazil. bernardomed@hotmail.com

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
|November 28, 2012
PubMed
Summary

This study defines a 2.64 cm safety margin for coracoid process osteotomy, crucial for coracoid transfer procedures. This measurement ensures the integrity of coracoclavicular ligaments during shoulder instability surgery.

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Area of Science:

  • Orthopedic surgery
  • Anatomy
  • Biomechanics

Background:

  • Coracoid process osteotomy is utilized in reconstructive shoulder surgery, particularly for glenohumeral instability with bone loss.
  • Accurate osteotomy is vital to avoid compromising critical ligamentous structures.

Purpose of the Study:

  • To establish a precise safety margin for coracoid process osteotomy.
  • To ensure the preservation of coracoclavicular ligaments during coracoid transfer procedures.

Main Methods:

  • Dissection of 30 cadaveric shoulders to expose the coracoid process and associated soft tissues.
  • Measurement of distances from the coracoid process apex to the insertions of relevant ligaments and muscles.

Main Results:

  • The average coracoid process length was 4.26 cm.
  • A safety margin of 2.64 cm was determined for osteotomy.
  • Correlations between osteotomy margin and soft tissue attachments (pectoralis minor, coracoacromial ligament) were established.

Conclusions:

  • A defined safety margin of 2.64 cm for coracoid process osteotomy is established.
  • Anatomic descriptions and measurements aid surgeons in performing safer, more precise coracoid transfer procedures.
  • This facilitates anatomic correction of glenohumeral instability with bone loss.