Flexor digitorum profundus

Dr Henry Knipe et al.

Flexor digitorum profundus (FDP) makes up the third layer of the anterior compartment of the forearm along with flexor pollicis longus. It passes through the carpal tunnel.

Summary

  • origin: proximal, anterior surface of ulna and adjacent interosseous membrane
  • insertion: volar surface of distal phalanges 2-5
  • innervation
  • action: flexion at the distal interphalangeal, proximal interphalangeal and wrist joints
Upper limb anatomy
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Article information

rID: 23265
Section: Anatomy
Synonyms or Alternate Spellings:
  • Flexor digitorum profundus
  • FDP

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Cases and figures

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    Figure 1: carpal tunnel diagram
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