Muscles / Forearms
Flexor digitorum superficialis
- Forearms
- Forearm & wrist
- Intermediate layer
Also called FDS.
Anatomy
- Origin
- Humero-ulnar head: medial epicondyle, ulnar collateral ligament, coronoid process; radial head: superior anterior border of the radius
- Insertion
- Shafts of the middle phalanges of digits 2-5
- Nerve
- Median nerve (C8-T1 (C7))
Actions
- Flexes the PIP joints of digits 2-5
- Assists MCP and wrist flexion
Also trained by
Notes
- Tested by flexing one PIP joint while the other fingers are held extended (blocks FDP).
References (5)
- Wehbé MA, Hunter JM. J Hand Surg Am. 1985;10(4):575-579. Flexor tendon gliding in the hand. Part II. Differential gliding
- Standring S, ed. Elsevier. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed.
- Dalley AF, Agur AMR. Wolters Kluwer. Moore's Clinically Oriented Anatomy. 9th ed.
- Neumann DA. Elsevier. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed.
- Betts JG, Young KA, Wise JA, et al. OpenStax (free, openly licensed textbook). Anatomy and Physiology 2e