What is the role of imaging studies in the evaluation of deep peroneal nerve entrapment?

Updated: Oct 15, 2019
  • Author: Minoo Hadjari Hollis, MD; Chief Editor: Thomas M DeBerardino, MD  more...
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Answer

Bony impingement can usually be seen on conventional lateral ankle or foot radiographs. Oblique radiographs taken from different angles are necessary for better definition of smaller osteophytes, exostosis, or other bony masses about the anterior ankle or the dorsomedial midfoot. Knee radiographs are needed for suspected proximal involvement. If necessary, a CT scan will provide more detailed information on the bony anatomy of the area.

Ultrasonography has been useful for diagnosis and localization of cystic masses impinging on the nerve. Occasionally, MRI is necessary to obtain additional information about soft-tissue masses, synovial reaction, adjacent bone, and chondral and soft-tissue involvement.


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