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Study of Anatomical Variations in Suprascapular Notch and Its Clinical Importance in Nerve Entrapment

Anjali Prasad. , Kumari Suman1 , Anjali Prasad2 , Binod Kumar3

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Indian Journal of Anatomy 9(4):p 251-254, October-December 2020. | DOI: http://dx.doi.org/10.21088/ija.2320.0022.9420.3

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Kumari Suman, Anjali Prasad, Binod Kumar. Study of Anatomical Variations in Suprascapular Notch and Its Clinical Importance in Nerve Entrapment. Indian J Anat. 2020;9(4):251–254.
 

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Received : N/A         Accepted : N/A          Published : N/A

Abstract

Introduction: The scapula is a large flat, triangular bone which lies on the posterolateral aspect of the chest wall having suprascapular notch (SSN), a variable depression on the superior border of scapula, near the root of coracoid process. The SSN is converted into a foramen by the superior transverse scapular (suprascapular) ligament, it is sometimes ossified. The suprascapular nerve traverses the foramen and is the main site for injury and entrapment of the nerve. Anatomical variations of the SSN are a possible cause of nerve entrapment. So the objective of the present study was to see variations in the shape of Suprascapular notch on gross examination. Materials and Methods: 150 dried human scapulae were studied in the department of Anatomy of Govt. Medical College. The Scapulae were examined for different shapes of SSN including absence of notch. Results: Out of total 150 scapulae 28% scapulae had indentation at the site of Suprascapular notch most common variation. 25.33% had U shaped notch, 20% had J shaped notch, 8% had V shaped notch. Absence of notch was also noted. Conclusion: In our study indented notch is most common, which has a lower chance of nerve entrapment as compared to V shaped notch, which is least common in our study. Detail knowledge of SSN variations may be essential for surgeons performing suprascapular nerve decompression.

 

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Cite this article

Kumari Suman, Anjali Prasad, Binod Kumar. Study of Anatomical Variations in Suprascapular Notch and Its Clinical Importance in Nerve Entrapment. Indian J Anat. 2020;9(4):251–254.
 

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DOI: http://dx.doi.org/10.21088/ija.2320.0022.9420.3

Keywords

Scapula; Supra scapular notch; Suprascapular nerve; Nerve entrapment

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