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Ulnar nerve

Origin, regional course, terminal branches, motor and sensory territories, and the main compression sites of the ulnar nerve.

  • 33 explained questions
  • 21 flashcards
  • 72 estimated course minutes

Updated

What you will learn

  • Locate the ulnar nerve's origin and reconstruct its course from the axilla to Guyon's canal.
  • Describe its regional relationships in the arm, elbow, forearm, and wrist.
  • Distinguish its superficial and deep terminal branches.
  • Relate each motor and sensory territory to the ulnar nerve.
  • Recognize frequent injuries and the three ulnar-nerve compression zones.

Course outline

  1. Orientation: a medial nerve from axilla to hand

    A global map of the ulnar nerve before following its detailed anatomy.

    5 min

  2. Origin and regional course

    Reconstruct the ulnar nerve's path from the axilla to the wrist, region by region.

    12 min

  3. Distal relationships and termination

    Understand the elbow, forearm, and wrist passage before the terminal split.

    10 min

  4. Terminal branches

    Follow the superficial and deep divisions and each of their destinations in the hand.

    12 min

  5. Motor territory

    Link the ulnar nerve to the forearm muscles and intrinsic hand groups.

    14 min

  6. Sensory territory

    Map the ulnar cutaneous territory on the palm and dorsum of the hand.

    9 min

  7. Injuries and compression sites

    Connect frequent injuries to the anatomical landmarks where the ulnar nerve is exposed.

    10 min

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