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Coracobrachialis

Contents

Anatomy pictures

Coracobrachialis - anterior
Coracobrachialis - anterolateral
Coracobrachialis - anterior closeup

Referred pain pattern

  • Lateral aspect of shoulder
  • Central part of posterior upper arm (central 1/3)
  • Central part of posterior lower arm
  • Central part of dorsal side of wrist radiating into the middle finger
Coracobrachialis back
Coracobrachialis front

Muscle type

  • Postural
    • Shortens when overactivated

Symptoms

  • Difficulties adducting the arm on the posterior side of the body

Muscle attachment zones

Videoes

Short version

 

Detailed version

Anatomy

Position

  • Deep

Origin

  • Processus coracoideus scapula

Insertion

  • Along the medial aspect of the humerus (middle 1/3)

Main function

  • Shoulder:
    • Flexion
    • Adduction

Nerve innervation

  • Segmental
    • C5-C7
  • Peripheral:
    • Musculocutaneous

Arterial supply

  • Brachial artery
  • Anterior circumflex humeral artery