Suprascapular Notch: A Morphometric and Morphologic Study in North Indian Population.
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Date
2015-07
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Abstract
Background: The suprascapular notch is a semicircular notch located at the superior border of the scapula,
just medial to the base of the coracoid process which constitutes the main site of compression of the
suprascapular nerve. The aim of present study is to study morphological variations of the suprascapular notch
in the North Indian population, classify the suprascapular notch into various types and to correlate the type of
notch to the incidence of suprascapular nerve entrapment syndrome.
Materials and Methods: Material for the present study comprised of 100 adult scapulae (Right : Left :: 50:50) of
unknown age and sex, obtained from Department of Anatomy, Govt. Medical College, Amritsar, Punjab, India.
Results: Suprascapular notch was present in 95% bones, was transversely oval in 66%, vertical diameter =
5.9mm (3.29-16.80mm), transverse diameter = 5.96mm(2.93-13.70mm), distance from the base of suprascapular
notch to the superior rim of glenoid = 29.98mm (21.7-39.25mm). It was classified as per Natsis et al classification
into type I (20%), type II (39%), type III (34%), type IV (5%) and type V (2%). Our results were compared with the
studies of other authors.
Conclusions: The knowledge of classification and the anatomical variations of suprascapular notch helps the
clinician to define easily and quickly the type of notch and be able to correlate suprascapular nerve entrapment
with a specific type of notch.
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Keywords
Suprascapular Notch, Superior Transverse Ligament, Vertical Diameter,, Transverse Diameter
Citation
Sharma Ritika, Sharma Rajan, Singla Rajan Kumar, Kullar Jagdev Singh, Sharma Tripta. Suprascapular Notch: A Morphometric and Morphologic Study in North Indian Population. International Journal of Anatomy and Research. 2015 Jul-Sep; 3(3): 1306-1311.