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The Flexor Digitorum Profundus is in the Deep Layer of the Anterior Forearm Compartment.
- Medial and anterior ulna to the anterior surfaces of fingers #2-5 (index, middle, ring, little).
- The proximal attachment is onto the proximal 1/2 of the anterior ulna.
- The distal tendons attach onto the anterior surfaces of the distal phalanges.
- Flexes fingers #2-5 at the metacarpophalangeal and proximal and distal interphalangeal joints.
- Flexes the hand at the wrist joint.
NOTE: The distal tendons of the flexor digitorum profundus run through the carpal tunnel and can be involved with carpal tunnel syndrome.