Deltoid (Anterior)

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Other Names Shoulder (Front) Front Delts Heads Anterior Deltoid (1 of 3) Also see Lateral Deltoid Posterior Deltoid Movement Shoulder Abduction Flexion Transverse Flexion Internal Rotation Attachments Origin Clavicle (Anterior Lateral Third) Insertion Humerous (Lateral) Deltoid Tuberosity 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).