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Anatomy
Anatomy

Subscapularis

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

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In one line

The "S" of SITS; the internal rotator of the shoulder, also involved in extension and adduction.

Detail

The subscapularis is one of the four rotator cuff (SITS) muscles. Its functions are internal rotation and involvement in extension and adduction of the shoulder.

Key facts

  • Function 1: internal rotation.
  • Function 2: also involved in extension and adduction.

Connections

  • rotator-cuff — the SITS group.
  • internal-rotation — primary function.
  • adduction — also involved.
  • extension — also involved.
SourceReference manual
p.84p.232
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

Adduction
Movement of a body part toward the midline (axis) of the trunk.
Extension
Straightening a joint so the bones move apart.
Internal Rotation
Rotation with the axis of the bone turning toward the body (e.g., the humerus turned inward).
Rotator Cuff (SITS)Closely related
The four rotator cuff muscles — Supraspinatus, Infraspinatus, Teres minor, Subscapularis (SITS) — that rotate and stabilize the shoulder joint.