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Anatomy
Anatomy

Supraspinatus

Evidence-grounded — sourced from Fysiqal's fitness knowledge graph· 1 min read
rotator-cuffsitsshouldersupraspinatusabduction

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In one line

The "S" of SITS; it abducts the humerus and does not rotate it.

Detail

The supraspinatus is one of the four rotator cuff (SITS) muscles. Its function is to abduct the humerus; it does not rotate the humerus. It is also involved (along with the deltoid heads) in the true abduction movement of the medial deltoid.

Key facts

  • Function: abducts the humerus; does NOT rotate the humerus.
  • Participates in true abduction together with the medial deltoid.

Connections

  • rotator-cuff — the SITS group.
  • abduction — the movement it produces.
  • medial-deltoid — true abduction involves the supraspinatus.
SourceReference manual
p.84p.380
Cited authorities in source: Ellison (1991).
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Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.

Explore related topics

Atlas Connections

Abduction
Movement of a body part away from the midline (axis) of the trunk.
Medial DeltoidClosely related
The middle deltoid head; the primary muscle of true shoulder abduction (90°), involving all three heads plus the supraspinatus.
Rotator Cuff (SITS)Closely related
The four rotator cuff muscles — Supraspinatus, Infraspinatus, Teres minor, Subscapularis (SITS) — that rotate and stabilize the shoulder joint.