The Morphologicaland Morphometric Study of Suprascapular Notch and Its Variations

Abstract

The Suprascapular notch is situated in the lateral part of the superior border of the scapula, just adjacent to the base of Coracoid process. The notch is bridged by the superior transverse scapular ligament (STSL) which some time ossifies and is attached laterally to the root of the coracoid process and medially to the limit of the notch. A number of variations occur in the shape of suprascapular notch, from a discrete notch to "J" shaped, "V" shaped, "U" shaped or "O" shaped (i.e. as a complete foramen). To study morphological and morphometric variations of suprascapular notch of Indian population. We studied 140 dried scapula bone and measurements of SSN were done using digital vernier calipers. We used the Rengachary classification for this study. The following measurements were The superior transverse diameter-maximum distance between superior most edges of suprascapular notch (SSN). The inferior transverse diameter-maximum distance between the edges of the curved arch at the base of the SSN. The results of our study were: J-shaped-28%, U-shaped-26%, V-shaped-15%, Partial-ossification-7%, Indentation-10%, Absent-9%, Complete ossification-2%. Type IV supra scapular notch was found to be the most prevalent type amongst all shapes. We also found that the characteristics of the scapula (dimensions) are related to the characteristics of the supra scapular notch (type and dimensions) and there is a distinct difference between right and left side scapula.

Frequency of Complete Absence of Suprascapular Notch in Dry Scapulae - An Osteological Study with Clinical Significance

“…The incidence of complete absence of suprascapular notch in our study is almost similar studies performed by Kour et al, Varghese et al, Mahato et al, Vaidya et al among Indian population though sample size as well as regional variation still present. (15,31,32,33) Apart from this, our observation for the incidence was almost similar with work done by Albino et al in Italian population but the sample size was very high in their case. (30) Similar results for the incidence were seen in studied performed by Natsis et al & Polgus et al among population of Greek & Poland.…”

“…Soni et al (36) 2012 Agroha 100 2% Rekha et al (18) 2013 Karnataka Single Case Report Vasudha et al (37) 2013 Karnataka 115 6% Reddy et al (38) 2013 Andhra Pradesh 104 21.15% Pragna et al (34) 2013 Gujarat 80 6.25% Jawed et al (35) 2014 Patna 220 34(15.46%) Kannan et al (39) 2014 Pondicherry 415 80(20%) Desai et al (40) 2014 Gujarat 200 16% Kour et al (15) 2016 Jammu 60 8(13.3%) Rubi et al (17) 2016 Assam 236 42(17.79%) Varghese et al (32) 2017 Kerala 50 7(14%) Mahato et al (31) 2017 Tamil Nadu 250 23(9.2%) Vaidya et al (33) 2018 Table 4.…”

Morphometric Study of Scapula and Related Surgical Importance of Suprascapular Notch among West Coastal Population of South India

“…The study of dimensions of the suprascapular notch can provide with a guide way for landmark for suprascapular nerve block and to correlate suprascapular nerve entrapment syndrome [10,11]. Variations in the morphology of suprascapular notch have been identified as one of the causes of suprascapular nerve neuropathy by suprascapular nerve entrapment [2, 6,11,14,16]. Morphometric measurements of suprascapular notch give us a better understanding of predisposing factors which cause compression of the suprascapular nerve.…”