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Muscles / Forearms

Flexor carpi ulnaris

Also called FCU.

Anatomy

Origin
Humeral head: medial epicondyle; ulnar head: olecranon and posterior border of the ulna
Insertion
Pisiform, hook of the hamate and base of the 5th metacarpal
Nerve
Ulnar nerve (C7-C8)

Actions

  • Flexes the wrist
  • Adducts (ulnar deviates) the wrist

Exercises that train it most

Notes

References (4)
  1. Standring S, ed. Elsevier. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed.
  2. Dalley AF, Agur AMR. Wolters Kluwer. Moore's Clinically Oriented Anatomy. 9th ed.
  3. Neumann DA. Elsevier. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed.
  4. Betts JG, Young KA, Wise JA, et al. OpenStax (free, openly licensed textbook). Anatomy and Physiology 2e