Type of Article:  Original Research

Volume 5; Issue 1 (January 2017)

Page No.: 3430-3434

DOI: https://dx.doi.org/10.16965/ijar.2016.496


Sumathi Shanmugam*1, Muthuprasad Puthuraj 2, Gayathri Jayamurugavel 3, Sivakami Thiagarajan 4.

*1 Senior Assistant Professor, Department of Anatomy, Thanjavur Medical College, Thanjavur, India.

2 Senior Assistant Professor, Department of Anatomy, Government Thiruvarur Medical College, Thiruvarur, India.

3 Assistant Professor, Department  of Anatomy, Thanjavur Medical College, Thanjavur, India.

4 Professor & HOD, Department of Anatomy, Thanjavur Medical College, Thanjavur, India.

Address for Correspondence: Dr.Sumathi Shanmugam, 59, First Street, North Natarajapuram, Thanjavur-613004. E-Mail: tnj_muthu@yahoo.com


Background: The etiology in 1-2% of patients with shoulder pain is suprascapular nerve entrapment. The suprascapular notch transmits the surascapular nerve and is bridged by the superior transverse scapular ligament. The size and shape of the suprascapular notch plays a significant role in the impingement of the suprascapular nerve in the notch. The variations in the morphology of suprascapular notch can be correlated to the individuals’ predisposition to suprascapular nerve entrapment

Materials and Methods: A total of 176 dried human scapulae irrespective of age and sex were obtained from the Department of Anatomy and were morphologically analysed for the type of suprascapular notch based on the Rengachary et al classification.

Results: Suprascapular notch was absent in four scapulae. Type III was the commonest type with seventy four scapulae[43.03%] and type IV was the least observed with six scapulae[3.48%].The prevalence of Type-I was 11.63%,Type-II was 23.26%,Type-V was 5.81% and Type-VI was 12.79%.

Conclusions: The higher incidence of suprascapular foramen in these studies stresses the need to have a knowledge of the morphology of suprascapular notch.. The determination of the type of notch helps in clinical screening of high risk population while evaluating the patients with shoulder pain.

KEY WORDS: Suprascapular Notch, Morphological types, Suprascapular Nerve Entrapment.


  1. Standring Susan. Suprascapular notch. In: Gray’s Anatomy. The anatomical basis of clinical practise.40th edition, London, Churchill livingstone; 2008:794-795.
  2. Callahan JD, Scully TB, Shapiro SA. Suprascapular nerve entrapment- a series of twenty seven cases. J Neurosurg 1991;74:893-896.
  3. Sinkeet SR, Awori KO, Odula PO, Ogeng`o JA, Mwachaka,PM. The suprascapular notch: its morphology and distance from the glenoid cavity in a Kenyan population. Folia Morphol, 2010;69(4):241-245.
  4. Polguj M, Sibinski M, Grzegorzewski A, Grzelak P, Majos A, Topol M. Variation in morphology of suprascapular notch as a factor of suprascapular nerve Int Orthop, 2013;37(11):2185-2192.
  5. Cummins CA, Messer TM Nuber GW. Suprascapular nerve entrapment. J Bone joint surg, 2000;82:415-424.
  6. Natsis K, Totlis T, Tsikaras P, Appell HJ, Skandalakis K. Proposal for classification of the suprascapular notch: a study on 423 dried scapulas. Clin Anat, 2007;20:135-139.
  7. Rengachary SS, Burr D,Lucas S, Khatab HM, Mohn MP,Matzke H. Suprascapular entrapment, neuropathy: a clinical, anatomical and comparative study,Part 2: anatomical study. Neurosurg, 1979;5:447-451.
  8. Hrdicka A. The adult scapula: additional observations and measurements. Am J Physiol Anthropol, 1942;29:363-415.
  9. Sangam Muralidhar Reddy. A study on the morphology of the suprascapular notch and its distance from the glenoid cavity. J Clin Diagn Res, 2013;7(2):189-192.
  10. Bayramoglu A, Demiryurek D, Tuccar E, Erbil M, Aldur MM,Tetik O,Dorai MN.. Variations in anatomy at the suprascapular notch possibly causing suprascapular nerve entrapment: an anatomical study. Knee Surg Sports Traumatol Arthroscopy, 2003;11:393-398.
  11. Albino P, Carbone S, Candela V, Arceri V, Vestri AR, Gumina S. Morphometry of the suprascapular notch correlation with scapular dimensions and clinical relevance.BMC Musculoskel disord,2013;14:172.
  12. Ushakannan NS, Kannan J, Anbalagan, Sudha Rao. Morphometric study of suprascapular notch in Indian dry scapulae with specific reference to the incidence of completely ossified superior transverse scapular ligament. J clin Diagn Res, 2014;8(3):7-10.
  13. Gray DJ. Variations in human scapulae. American Journal of Physical Anthropology, 2013;29(1):57-72.
  14. Moriggl B, Jax P, Miltz S, Buttner A, Benjamin M. Fibrocartilage at the entheses of the suprascapular ligament of man – a ligament spanning two regions of a single bone. J Anat, 2001;199:539-545.
  15. Avery BW, Pilon FM,Barclay JK. Anterior coracoscapular ligament and suprascapular nerve entrapment. Clin Anat, 2002;15:383-386.
  16. Polguj M, Jedrzejewski K, majos A, Topol M. Coexistance of the suprascapular notch and the suprascapular foramen- a rare anatomical variation and a new hypothesis on its formation based on anatomical and radiological studies. Anat Sci Int, 2013; 88:156-162.
  17. Polguj M, Jdrzejewski KS, Podgorski M, Topo M. Morphometric study of suprascapular notch- proposal of classification. Surg Radiol Anat, 2011;33:781-787.
  18. Ferretti A, Cerullo G, Russo G. Suprascapular neuropathy in volleyball players. The Journal of Bone Joint Surg AM, 1987;69:260-263.
  19. Barwood SA, Burkhart SS, Lo IK. Arthroscopic suprascapular nerve release at the suprascapular notch in a cadaveric model: an anatomic approach.Arthroscopy, 2007;23:221-225.

Cite this article: Sumathi Shanmugam, Muthuprasad Puthuraj, Gayathri Jayamurugavel, Sivakami Thiagarajan. A STUDY ON THE MORPHOLOGICAL VARIATIONS OF THE SUPRASCAPULAR NOTCH IN THE POPULATION OF EASTERN DELTA REGION OF TAMIL NADU. Int J Anat Res 2017;5(1):3430-3434. DOI: 10.16965/ijar.2016.496