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Category: Volume 07 Issue 05 May 2019
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Title: Study of Morphological and Morphometric Features of Suprascapular Notch in Human Dry Scapulae at S.M.S. Medical College Jaipur

Authors: Rajoria Sushil Raj, Agarwal Chandra Kala, Chauhan Sangita, Yadav Vishva Deepak

 DOI: https://dx.doi.org/10.18535/jmscr/v7i5.132

Abstract

Introduction: Suprascapular notch (SSN) is a depression present on the superior border of scapula just medial to root of coracoid process. This notch is an important landmark in arthroscopic shoulder operations for the suprascapular nerve. The aim of present study was to classify the suprascapular notch in various types and to study morphological variations of it.

Materials and Methods: The study was conducted on dried, unbroken and completely ossified human scapulae obtained from Department of Anatomy, SMS Medical College and RUHS Medical College, Jaipur (Rajasthan) from February 2017 to January 2018. The suprascapular notch was classified on the basis of two classifications proposed by Natsis et al and Iqbal et al. Percentage of each type, the vertical depth, the maximum transverse diameter of the suprascapular notchand distance from supraglenoid tubercle to the base of the notchwere measured and compared with the previous studies.

Results: The suprascapular notch was present in 98% bones. The mean vertical depth was 11.54 mm (1.02-13.0 mm), transverse diameter was 14.04 mm (0.86-21.26 mm) and distance from supraglenoid tubercle to the base of the notch was 29.12 mm (25.46-38.70 mm). It was classified according to Natsis et al classification into type-I (2%), type-II (76%) type-III (20.4%) type-IV (1.6%) and type-V (0%).

Conclusion: The present study provided the data related to various types and anatomical variations of suprascapular notch which may be useful for clinicians to associate them with suprascapular nerve entrapment.

Keywords: Scapula, Scapular notch, Vertical diameter, Transverse diameter.

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Corresponding Author

Chauhan Sangita

Sr. Professor, Department of Anatomy, S.M.S. Medical College, Jaipur, Rajasthan, India