What are the advantages of MRI for the evaluation of ulnar neuropathy?

Updated: Jun 08, 2018
  • Author: Charles F Guardia, III, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
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Answer

Neurogenic muscle edema can be seen as early as 24-48 hours after denervation, and short T1 inversion recovery (STIR) sequences are particularly sensitive for that. This is to be contrasted with EP testing, in which changes after denervation are not seen for 1-3 weeks. After months of denervation, fatty muscle atrophy is seen. Changes in the surrounding structures that may be related to the neuropathy in question, such as osteoarthritis, synovitis, or tumors, can be seen with MRI as well. [125]


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