Variations in the Shape of the Suprascapular Notch in Dry Human Scapula: An Anatomical Study
Journal Title: INTERNATIONAL JOURNAL OF SCIENTIFIC STUDY - Year 2017, Vol 5, Issue 1
Abstract
Introduction: The suprascapular notch is a regular feature of the superior border of the scapula, medial to the root of the coracoid process. Usually, this notch is converted into a foramen by the attachment of the superior transverse scapular ligament to its edges. The suprascapular nerve passes through this foramen while the suprascapular vessels pass above the ligament. Materials and Methods: The study was conducted on 258 dry human scapula (131 right and 127 left) obtained from the Department of Anatomy, Jorhat Medical College, Jorhat and Department of Anatomy, Assam Medical College, Dibrugarh, Assam. The scapulae were examined macroscopically for their shape and data recorded. Result: It was found that the suprascapular notch presents with various shapes such as U, V, J, and slight indentation. Even it could be absent in a scapula and this could be a reason behind the suprascapular nerve entrapment syndrome. In this study, we found U-shaped notch in 104 (40.31%) scapulae, V-shaped notch in 20 (7.75%), and J-shaped notch in 55 (21.31%) scapulae. 45 (17.44%) scapulae were without any notch. In 26 (10.07%) scapula there was only a slight indentation at the site of the suprascapular notch. In 8 (3.1%) scapula, the superior transverse scapular ligament was completely ossified, and the notch was converted into a foramen. Conclusion: Knowledge about various shapes of the suprascapular notch will definitely help the clinicians while dealing with patients coming with signs and symptoms of suprascapular nerve entrapment syndrome. The suprascapular nerve is commonly compressed when the notch is V-shaped or is absent in a scapula.
Authors and Affiliations
Rubi Saikia
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