Deltoid (Anterior)

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Other Names

  • Shoulder (Front)
  • Front Delts

Heads

  • Anterior Deltoid (1 of 3)

Also see

Movement

Shoulder

Attachments

Origin

  • Clavicle (Anterior Lateral Third)

Insertion

  • Humerus (Lateral)
    • Deltoid Tuberosity
Anterior Deltoid

Comments

The anterior deltoid is involved in shoulder abducted when the shoulder is externally rotated. The anterior deltoid is weak in strict transverse flexion but assists the pectoralis major during shoulder transverse flexion / shoulder flexion (elbow slightly inferior to shoulders).

Due to increasing moment arm with abduction, anterior deltoid is more effective at shoulder abductor in higher abduction angles in contrast to supraspinatus which more effective shoulder abductor at lower abduction angles.

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