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Medial cutaneous nerves of the arm and forearm

Origins, courses, branches and sensory territories of the medial cutaneous nerves of the arm and forearm, with key clinical landmarks.

  • 16 explained questions
  • 15 flashcards
  • 39 estimated course minutes

Updated

What you will learn

  • Identify the C8–T1 origin of these two sensory branches of the medial cord of the brachial plexus.
  • Describe the axillary and brachial course of the medial cutaneous nerve of the arm separately.
  • Describe the course, fascial crossing and terminal division of the medial cutaneous nerve of the forearm.
  • Delimit the medial cutaneous territories of the arm and forearm.
  • Relate the nerve courses to elbow and forearm blocks and to common injury settings.

Course outline

  1. Two nerves, one medial surface

    The distinction between the medial cutaneous nerve of the arm and the one serving the forearm.

    5 min

  2. Medial cutaneous nerve of the arm

    Follow the arm’s sensory branch from the medial cord to the medial epicondyle.

    9 min

  3. Medial cutaneous nerve of the forearm

    Describe the forearm branch, its fascial crossing and its division near the medial epicondyle.

    10 min

  4. Comparing the two courses and territories

    Match each nerve to its vascular relation, point of superficialization and cutaneous map.

    8 min

  5. Blocks and injuries to remember

    Connect both nerves’ landmarks to regional blocks and to operative or traumatic settings.

    7 min

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