Suprascapular notch

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Suprascapular notch
Suprascapular notch of left scapula03.png
Costal surface of left scapula. Suprascapular notch shown in red.
Scapula ant - Suprascapular notch.png
Costal surface of left scapula. Suprascapular notch visible in the red square.
Details
Identifiers
Latin incisura scapulae
TA98 A02.4.01.015
TA2 1158
FMA 23236
Anatomical terms of bone

The suprascapular notch (or scapular notch) is a notch in the superior border of the scapula, just medial to the base of the coracoid process. [1] It is converted into the suprascapular canal by the suprascapular ligament. [2]

Contents

Structure

This notch is converted into a foramen by the suprascapular ligament, and serves for the passage of the suprascapular nerve. [2] The suprascapular vessels vary in number as well as in their course as they run at the suprascapular notch site. The suprascapular artery pass above the suprascapular ligament in most cases. The suprascapular vein may pass through the suprascapular notch or it may instead pass superior to the suprascapular ligament. [3] [1]

Types

Two main classification systems exist; others are modified approaches of the same principle.

Typing based on subjective observation of the suprascapular notch shape.

Introduced by Hrdicka 1942 and modified by Rengachary et al. 1979 There are six basic types of scapular notch:

Typing based on parametric measurements of depth to upper width ratio of the suprascapular notch

Introduced by Natsis et al. 2007 and modified by Polguj et al. 2011 There are five basic types of scapular notch:

The second method of suprascapular notch typing yields more practical approach in clinical diagnosis of the suprascapular nerve entrapment. [5]

Clinical significance

As the suprascapular nerve passes through the suprascapular notch, it is a common site of entrapment for the nerve. [1] [6] [7]

Suprascapular notch stenosis is a narrowing of the notch internal space that can potentially compress the suprascapular nerve leading to suprascapular nerve entrapment. Al-Redouan et al. 2020 predicted the morphological pattern of the suprascapular notch stenosis revealing higher incidence in the discrete notch (Type V according to the parametric measurements typing system). There are two main suprascapular stenosis patterns: [5]

The suprascapular nerve predictably passes through the suprascapular notch, so it is a good place for a local nerve block of the entire nerve. [8] [9]

Additional images

See also

References

  1. 1 2 3 Al-Redouan, Azzat; Holding, Keiv; Kachlik, David (2021). ""Suprascapular canal": Anatomical and topographical description and its clinical implication in entrapment syndrome". Annals of Anatomy. 233: 151593. doi: 10.1016/j.aanat.2020.151593 . PMID   32898658.
  2. 1 2 Nathan, Jay K.; McGillicuddy, John E. (2015-01-01), Tubbs, R. Shane; Rizk, Elias; Shoja, Mohammadali M.; Loukas, Marios (eds.), "Chapter 38 - Anatomy of the Ventral Rami, Upper Trunk, and Its Divisions and Branches" , Nerves and Nerve Injuries, San Diego: Academic Press, pp. 527–535, doi:10.1016/b978-0-12-410390-0.00040-8, ISBN   978-0-12-410390-0 , retrieved 2020-10-19
  3. ↑ Polguj, Michał; Rożniecki, Jacek; Sibiński, Marcin; Grzegorzewski, Andrzej; Majos, Agata; Topol, Mirosław (2015). "The variable morphology of suprascapular nerve and vessels at suprascapular notch: a proposal for classification and its potential clinical implications". Knee Surg Sports Traumatol Arthrosc. 23 (5): 1542–1548. doi: 10.1007/s00167-014-2937-1 . PMC   4555201 . PMID   24633009.
  4. ↑ White, Tim D.; Black, Michael T.; Folkens, Pieter A. (2012-01-01), White, Tim D.; Black, Michael T.; Folkens, Pieter A. (eds.), "Chapter 8 - Shoulder Girdle: Clavicle and Scapula" , Human Osteology (Third Edition), San Diego: Academic Press, pp. 161–174, doi:10.1016/b978-0-12-374134-9.50008-8, ISBN   978-0-12-374134-9 , retrieved 2020-10-19
  5. 1 2 Al-Redouan, Azzat; Hudak, Radovan; Nanka, Ondrej; Kachlik, David (2020). "The morphological stenosis pattern of the suprascapular notch is revealed yielding higher incidence in the discrete type and elucidating the inevitability of osteoplasty in horizontally oriented stenosis" . Knee Surg Sports Traumatol Arthrosc. 29 (7): 2272–2280. doi:10.1007/s00167-020-06168-1. PMID   32712687. S2CID   220797681.
  6. ↑ Preston, David C.; Shapiro, Barbara E. (2013-01-01), Preston, David C.; Shapiro, Barbara E. (eds.), "31 - Proximal Neuropathies of the Shoulder and Arm" , Electromyography and Neuromuscular Disorders (Third Edition), London: W.B. Saunders, pp. 487–500, doi:10.1016/b978-1-4557-2672-1.00031-3, ISBN   978-1-4557-2672-1 , retrieved 2020-10-19
  7. ↑ Bouche, P. (2013-01-01), Said, Gérard; Krarup, Christian (eds.), "Chapter 19 - Compression and entrapment neuropathies" , Handbook of Clinical Neurology, Peripheral Nerve Disorders, 115, Elsevier: 311–366, doi:10.1016/b978-0-444-52902-2.00019-9, ISBN   9780444529022, PMID   23931789 , retrieved 2020-10-19
  8. ↑ Wilkinson, Laura J. "Defunct DOI" . Crossref. doi: 10.1016/b978-032304184-3.50050-9 . Retrieved 2020-10-19.
  9. ↑ Molloy, Robert E. (2005-01-01), Benzon, Honorio T.; Raja, Srinivasa N.; Molloy, Robert E.; Liu, Spencer S. (eds.), "Chapter 75 - Truncal Blocks: Intercostal, Paravertebral, Interpleural, Suprascapular, Ilioinguinal, and Iliohypogastric Nerve Blocks" , Essentials of Pain Medicine and Regional Anesthesia (Second Edition), Philadelphia: Churchill Livingstone, pp. 636–644, doi:10.1016/b978-0-443-06651-1.50079-4, ISBN   978-0-443-06651-1 , retrieved 2020-10-19

PD-icon.svgThis article incorporates text in the public domain from page 204 of the 20th edition of Gray's Anatomy (1918)

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