Suprascapular notch
| Suprascapular notch | |
|---|---|
 Costal surface of left scapula. Suprascapular notch shown in red. | |
 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.
This notch is converted into a foramen by the superior transverse scapular ligament, and serves for the passage of the suprascapular nerve (but not its corresponding artery);[1] sometimes the ligament is ossified. The suprascapular artery travels superiorly to the superior transverse ligament.[2]
Types
According to Rengachary et al. 1979, there are six basic types of scapular notch:[3]
- Type I (8%): Notch is absent. The superior border forms a wide depression from the medial angle to the coracoid process.
- Type II (31%): Notch is a blunted V-shape occupying the middle third of the superior border.
- Type III (48%): Notch is U-shaped with nearly parallel margins.
- Type IV (3%): Notch is V-shaped and very small. A shallow groove is frequently formed for the suprascapular nerve adjacent to the notch.
- Type V (6%): Notch is minimal and U-shaped with a partially ossified ligament.
- Type VI (4%): Notch is a foramen as the ligament is completely ossified.[4]
Clinical Relevance
As the suprascapular nerve passes through the suprascapular notch, it is a common site of entrapment for the nerve.[5][6]
The suprascapular nerve predictably passes through the suprascapular notch, so it is a good place for a local nerve block of the entire nerve.[7][8]
Additional images
-
Left scapula. Suprascapular notch shown in red. -
Animation. Suprascapular notch shown in red. -
Left scapula. Dorsal surface. (Sup. notch visible at top center.) -
Costal surface of left scapula. Suprascapular notch labeled at top center.
See also
Notes
- ^ 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
- ^ Gray's Anatomy (1918), see infobox
- ^ Habermeyer, Magosch & Lichtenberg 2006, pp. 5–6
- ^ 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
- ^ 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
- ^ Bouche, P. (2013-01-01), Said, Gérard; Krarup, Christian (eds.), "Chapter 19 - Compression and entrapment neuropathies", Handbook of Clinical Neurology, Peripheral Nerve Disorders, vol. 115, Elsevier, pp. 311–366, doi:10.1016/b978-0-444-52902-2.00019-9, retrieved 2020-10-19
- ^ Wilkinson, Laura J. "Defunct DOI". Crossref. doi:10.1016/b978-032304184-3.50050-9. Retrieved 2020-10-19.
- ^ 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
This article incorporates text in the public domain from page 204 of the 20th edition of Gray's Anatomy (1918)
References
- Habermeyer, Peter; Magosch, Petra; Lichtenberg, Sven (2006). Classifications and Scores of the Shoulder. Springer. ISBN 978-3-540-24350-2. LCCN 2005938553.
{{cite book}}: Invalid|ref=harv(help) - Rengachary, S. S.; Burr, D.; Lucas, S.; Hassanein, K. M.; Mohn, M. P.; Matzke, H. (1979). "Suprascapular entrapment neuropathy: a clinical, anatomical, and comparative study". Neurosurgery. 5 (4): 447–451. doi:10.1227/00006123-197910000-00007. PMID 534049.
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