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Anatomy Atlases: Illustrated Encyclopedia of Human Anatomic Variation: Opus III: Nervous System: Plexuses: Suprascapular Nerve

Illustrated Encyclopedia of Human Anatomic Variation: Opus III: Nervous System: Plexuses

Suprascapular Nerve

Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD

Peer Review Status: Internally Peer Reviewed


Several variations in the formation, course, and distribution of this nerve have been reported. It may receive fibers from the fourth cervical nerve (50% of cases), in addition to those usually supplied by the fifth and sixth cervical nerves.

The suprascapular nerve may arise entirely from the fifth cervical nerve.

In some cases, it divides into two parts, an upper and a lower; the upper passes through or above the suprascapular notch (transverse ligament) and the lower passes through a foramen below the notch. The entire nerve may also pass over the transverse scapular ligament.

The suprascapular may give branches to the following structures: teres minor and the upper part of the subscapular muscle, the scapula and its periosteum, and the acromioclavicular articulation.

Image 31A Image 31B Image 31C Image 31D Image 31E Image 31F

Image 31G Image 31H Image 31I Image 31J


References

Anson, B.J., Ed.(1966) Morris' Human Anatomy, 12th ed., The Blakiston Division, McGraw Hill Book Company, New York.

Bergman, R.A., Thompson, S.A., Afifi, A.K. and F.A. Saadeh. (1988) Compendium of Human Anatomic Variation., Urban & Schwarzenberg, Munich and Baltimore.

Latarjet, A. (1948) Testut's Traité d'Anatomie Humaine, 9th ed., G. Doin & Cie., Paris.

Kopsch, F. (1908) Rauber's Lehrbuch der Anatomie des Menschen. Georg Thieme, Leipzig.

Schaefer, E.A., Symington, J. and T.H. Bryce., Eds. (1915) Quain's Anatomy, 11th ed. Longmans, Green, and Co., London.

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