IJAR.2018.397

Type of Article:  Original Research

Volume 6; Issue 4.3 (December 2018)

Page No.: 6018-6024

DOI: https://dx.doi.org/10.16965/ijar.2018.397

ANATOMIC STUDY OF THE CORACOID PROCESS: SAFETY MARGIN FOR OSTEOTOMY FOR SHOULDER SURGERY

Ayman Ahmed Khanfour 1, Nehal Mohamed Nabil  *2, Bahaa Ahmed Motawea 3.

1 Anatomy and Embryology department, Faculty of Medicine, Alexandria University, Alexandria, Egypt.

*2 Anatomy and Embryology department, Faculty of Medicine, Alexandria University, Alexandria, Egypt.

3 Orthopedic Surgery department, Faculty of Medicine, Alexandria University, Alexandria, Egypt.

 *Correspondence Author: Nehal Mohamed Nabil, Anatomy and Embryology department, Faculty of Medicine, Alexandria University, Alexandria, Egypt. E-Mail: nehalnabil895@gmail.com

ABSTRACT:

Background: Surgical procedures as coracoid osteotomy, transfer, and fixation are used for management of recurrent anterior shoulder instability. However, the peculiar anatomy of bony and soft tissue footprints of the coracoid, as they relate to these surgical procedures, need further detailed studies owing to its clinical importance.

Aim of the work: to obtain safety margin for osteotomy of the coracoid process.

Materials and methods: The material of this work included twenty upper limbs of formalin preserved specimens obtained from the dissecting room of anatomy department, faculty of medicine, Alexandria University. Dimensions of the coracoid process were recorded. Anatomical measurements between the tip of the coracoid process to the anterior and posterior margins of the tendon of pectoralis minor were recorded. Distances between the tip of the coracoid process and the anterior and posterior margins of coracoacromial ligament, coracohumeral ligament, and the most distal point of conoid and trapezoid ligaments were recorded.

Results: The mean length, width, and height of the coracoid were 4.25, 1.4, 1.16 cm respectively. The mean distance between the tip of the coracoid process to the anterior and posterior margins of pectoralis minor were 1.07 and 2.04 cm respectively. The mean distance between tip of coracoid process and coracoacromial ligament (anterior and posterior margins), coracohumeral, conoid and trapezoid ligaments were 1.32, 2.19, 1.11, 3.70 and 2.73 cm respectively.

Conclusion: A safety margin of 2.35 cm from the tip of the coracoid process is recommended to avoid injury of coracoclavicular ligament. This distance was correlated with the distance between the tip and the posterior margin of pectoralis minor muscle.

Key words: Coracoid process, Coracoclavicular ligament, Coracoid osteotomy.

REFERENCES

  1. Terra BB, Ejnisman B, de Figueiredo EA, Cohen C, Monteiro GC, de Castro Pochini A, Andreoli CV, Cohen M. Anatomic study of the coracoid process: safety margin and practical implications. Arthroscopy 2013; 29 (1):25-30.
  2. Fathi M, Hussin P, Nizlan N M, See C P, Ahmad U, San A A, AbdulRahim E, Othman F. Easy, fast and accessible dissecting approach to coracoid process of human scapula. Research Journal of Pharmaceutical, Biological and Chemical Sciences 2015; 6 (2):1279- 1283.
  3. Sella GDV, Miyazaki AN, Nico MAC, Filho GH, Silva LA, Checchia SL. Study on the anatomic relationship between the clavicle and the coracoid process using computed tomography scans of the shoulder. Journal of shoulder and elbow surgery 2017; 26(10):1740-1747.
  4. Mohammed H, Skalski MR, Patel DB, TomasianA, ScheinAJ, White EA, Hatch GF 3rd, Matcuk GR Jr. Coracoid Process: The Lighthouse of the Shoulder. Radiographics 2016; 36 (7):2084-2101
  5. [5].             Dolan CM, Hariri S, Hart ND, McAdamsTR.An anatomic study of the coracoid process as it relates to bone transfer procedures. J Shoulder Elbow Surg  2011; 20(3):497-501
  6. Evensen C, Kalra K. Coracoid Process Transfer for Recurrent Instability of the Shoulder: A Critical Analysis Review. JBJS Rev. 2014; 18; 2 (2).
  7. Gökkuş K, Unal MB, Aydin AT. A Novel Surgical Approach to Coracoid-based Eosinophilic Granuloma and the Technical Trick. Tech Hand Up Extrem Surg  2016; 20(3):99-103.
  8. Lian J, Dong L, Zhao Y ,Sun J ,Zhang W, Gao C. Anatomical study of the coracoid process in Mongolian male cadavers using the Latarjet procedure. Journal of Orthopaedic Surgery and Research 2016; 11:126.
  9. Imma ll, Nizlan NM,  Ezamin AR, ,  Yusoff S,  Shukur MH. Coracoid Process Morphology using 3D-CT Imaging in a Malaysian Population. Malays Orthop J. 2017; 11(2): 30–35.
  10. Fathi M, Cheah P S,  Ahmad U, Nizlan N M,San A A, AbdulRahim E,  Hussin P,  Mahmud R,   Othman F. Anatomic Variation in Morphometry of Human Coracoid Process among Asian Population.  BioMed Research International, vol. 2017, Article ID 6307019, 10 pages.
  11. Terra BB,  de Figueiredo EA, Marczyk CSF,  Monteiro GC,  Pochini AC,  Andreoli CV,   Ejnisman B. Osteotomies of the coracoid process: an anatomical study. Rev Bras Ortop 2012; 47(3): 337–343.
  12. Harris RI, Wallace AL, Sonnabend DH, Harper GD, Goldberg JA, Jerome A., David H, William R W. Structural Properties of the Intact and the Reconstructed Coracoclavicular Ligament Complex. Am J Sports Med 2000; 28, (1): 103-108.
  13. Mazzocca AD, Santangelo SA, Johnson ST, Rios CG, Dumonski ML, Arciero RA. A biomechanical evaluation of an anatomical coracoclavicular ligament reconstruction. Am J Sports Med 2006; 34(2):236-246.
  14. Rios C A, Mazzocca AD. Anatomy of the clavicle and coracoid process for reconstruction of the coracoclavicular ligaments. Am J Sports Med 2007; 35:811-817.
  15. Boileau P O, Gastaud O, Brassart N, RoussanneY. All arthroscopic Weaver-Dunn-Chuinard procedure with double-button fixation for chronic acromioclavicular joint dislocation. Arthroscopy 2010; 26:149-160.
  16. Lim TK, Koh KH, Yoon YC, Park JH, Yoo JC. Pectoralis minor tendon in the rotator interval: arthroscopic, magnetic resonance imaging findings, and clinical significance. J Shoulder Elbow Surg 2015; 24 (6):848-853.
  17. Goldman E, Vasan C, Lopez-Cardona H, Vasan N. Unilateral ectopic insertion of the pectoralis minor: Clinical and functional significance. Morphologie. 2016; 100 (328):41-44.
  18. Tubbs RS, Salter EG. Unusual attachment of the pectoralis minor muscle. Clinical Anatomy 2005; 18(4):302-304.
  19. Gregory MAC, Christophe T, Pascal B. Ectopic insertion of the pectoralis minor: implication in the arthroscopic treatment of shoulder stiffness. Knee Surgery Sports Trauma Arthroscopy 2008; 16:869-871.
  20. Lee CB, Choi SJ, Ahn JH, Ryu DS, Park MS, Jung SM, Shin DR. Ectopic insertion ofthe pectoralis minor tendon: interreader agreement and  findings in the rotator interval on MRI. Korean J Radiol. 2014; 15 (6):764-770.

Cite this article: Ayman Ahmed Khanfour, Nehal Mohamed Nabil, Bahaa Ahmed Motawea. ANATOMIC STUDY OF THE CORACOID PROCESS: SAFETY MARGIN FOR OSTEOTOMY FOR SHOULDER SURGERY. Int J Anat Res 2018;6(4.3):6018-6024. DOI: 10.16965/ijar.2018.397