What are the cardinal symptoms of a spinal accessory nerve (SAN) injury?

Updated: Mar 04, 2020
  • Author: Rohan R Walvekar, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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See the list below:

  • Pain over the muscle

  • Heaviness of the arm

  • Depressed motor functions that consist of an inability to lift the shoulder girdle and abduct the arm [14]

  • Late sequelae - Shoulder syndrome that consists of shoulder droop, atrophic trapezius, loss of abduction, paresthesias, and adhesive capsulitis resulting in a frozen shoulder (See the image below.)

    Eden-Lange procedure. Eden-Lange procedure.

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