Hand Exam: Motor 2/13 – Flexor Digitorum Profundus (FDP)

Flexor Digitorum Profundus (FDP)

  • Instruct the patient “Bend the tip of your finger” while stabilizing their PIP joint
  • Insertion: distal phalanxes of fingers
  • Action: flexion of distal interphalangeal joints
  • Innervation: Median nerve (radial half), Ulnar nerve (ulnar half)

The 13 muscle groups you need to test in the hand exam:

  1. FPL
  2. FDP
  3. FDS
  4. Thenar muscles
  5. Interosseous
  6. Hypothenar muscles
  7. EPB and APL
  8. EPL
  9. EDC
  10. EIP and EDM
  11. ECRL and ECRB
  12. ECU
  13. Adductor Pollicis
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