flexor digitorum profundus

Origin: anterior surface of the upper 1/3 of the ulna Insertion: -> bases of distal phalanges of 4 fingers, by tendons perforating those of the flexor digitorum superficialis Action: flexes distal interphalangeal joint of fingers Innervation: ulnar nerve & median nerve

References

Stedman's Medical Dictionary 26th ed, Williams & Wilkins, Baltimore, 1995