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Anatomy Atlases: Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: S: Supraspinatus

Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: S

Supraspinatus

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

Peer Review Status: Internally Peer Reviewed


The supraspinatus is very constant in form and attachments. Macalister called the muscle singularly invariable. However, very rare variations include the following:

a) the division of its belly into two parts,
b) an additional slip that arises from the suprascapular ligament,
c) a connection between its tendon and that of pectoralis minor,
d) a slip passing from its tendon to that of pectoralis major or to the pectoral ridge of the humerus, and
e) attachment to a tendinous lamella below the insertion of pectoralis major on the humerus.

Syn.: m. Obergrätenmuskel, Sus-épineux.


References

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

Henle, J. (1871) Handbuch der Muskellehre des Menschen, in Handbuch der systematischen Anatomie des Menschen. Verlag von Friedrich Vieweg und Sohn, Braunschweig. 1-130.

Latarjet, A. Testut's Traitéd'Anatomie Humaine,9th ed. G. Doin & Cie., Paris.

LeDouble, A.F. (1897) Traité des Variations du Système Musculaire de l'Homme et leur Significance au Point de Vue de l'Anthropologie Zoologique. Libraire C. Reinwald, Schleicher Freres, Paris.

Macalister, A. (1875) Observations on the muscular anomalies in the human anatomy. Third serries with a catalogue of the principal muscular variations hitherto published. Trans. Roy. Irish Acad. Sci. 25:1-130.

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