Anterior Deltoid Shoulder Flexion
at the Glenohumeral Joint

Anterior Deltoid Shoulder Flexion

Action Review for the Anterior Deltoid  Shoulder Flexion

Anterior Deltoid Prime Mover of flexion of the glenohumeral joint is its action described as:

  • flexion of the shoulder at the joint as in raising a glass to drink and medial rotation of the shoulder as in pouring a glass of water from a pitcher. 

SYNERGISTS: assist in performing the action of shoulder flexion

  • Pectoralis Major (Clavicular Head)
  • Coracobracialis
  • Biceps Brachii (Short Head)

SABILIZERS: Allow for dynamic control of the shoulder at the glenohumeral joint

  • S.I.t.S. muscles which include supraspinatus, infraspinatus, teres minor and subscapularis

FIXATORS: Allow for dynamic control and fluid motion during full body movements

  • Scapular Muscles and rectus abdominis, obliques, quadratus lumborum, erector spinae

Antagonists: perform the opposite motion from the agonist in this case anterior deltoid

  • Latissimus dorsi,
  • Posterior Deltoid,
  • Teres major 
  • Triceps Brachii (long head)

See Flexion of the Shoulder at the Glenohumeral Joint

Return to Muscles of the Upper Extremity

Get Massage Smart offers the above anatomical information for its  educational value and dose not validate its accuracy. Please refer to the following texts and resources. 

References & Resources for the muscle anatomy information are:

Sieg and Adams: "Illustrated Essentials of Musculoskeletal Anatomy", 4th edition, 2002, Megabooks Inc,

Muscolino J E: The Muscular System Manual, The Skeletal Muscles of the Human Body, ed 3, 2009,

University of Michigan Medical School: Muscle Tables & Illustrations

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