flexor digitorum profundus muscle

Flexor digitorum profundus (FDP) muscle makes up the thirdlayer of the anterior compartment of the forearm along with flexor pollicis longus muscle. It passes through the carpal tunnel. It is one of the extrinsic muscles of the hand.

Summary

• origin: 
  • medial olecranon, upper three-quarters of the anterior and medial surface of ulna, adjacent interosseous membrane
  • shares aponeurotic attachment to the posterior border of the ulna with flexor & extensor carpi ulnaris
• insertion: volar surface of distal phalanges 2-5
• innervation
  • medial half (third, fourth and fifth digits): ulnar nerve
  • lateral half (second and third digits): anterior interosseous nerve
  • the third digit typically receives dual innervation
• action: flexion at the distal interphalangeal, proximal interphalangeal and wrist joints

Siehe auch:

• Beugesehnenverletzungen
• avulsion of the flexor digitorum profundus from the volar base of the distal phalanx

und weiter:

• Fingermuskulatur
• jersey finger
• Handgelenksmuskulatur
• lange Beugesehne