Suprascapular notch
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.
Suprascapular notch | |
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![]() 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 |
TA | A02.4.01.015 |
FMA | 23236 |
Anatomical terms of bone |
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); sometimes the ligament is ossified. The suprascapular artery travels superiorly to the superior transverse ligament.[1]
According to Rengachary et al. 1979, there are six basic types of scapular notch:[2]
- 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.
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.
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See also
Notes
- Gray's Anatomy (1918), see infobox
- Habermeyer, Magosch & Lichtenberg 2006, pp. 5–6
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.CS1 maint: ref=harv (link)
- 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.CS1 maint: ref=harv (link)
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