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Case Reports
. 2022 Jun;50(5):719-720.
doi: 10.1002/jcu.23222. Epub 2022 May 11.

Median nerve instability in the wrist: Ultrasound diagnosis

Ferdinando Draghi  1   2 , Guia Ferrozzi  3   4 , Mara Bonardi  5 , Matteo Precerutti  1
Affiliations
Case Reports

Median nerve instability in the wrist: Ultrasound diagnosis

Ferdinando Draghi et al. J Clin Ultrasound. 2022 Jun.

Abstract

Instability of the nerves, which does not follow traumatic injury, is relatively rare. The ulnare nerve is most typically involved. Median nerve instability is far less common. The identification of instability of the median nerve in the wrist is definitely an indication for ultrasound examination before carpal tunnel release.

Keywords: carpal tunnel; median nerve; nerve instability.

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Conflict of interest statement

No conflict of interest to be disclosed.

Figures

FIGURE 1
FIGURE 1
Axial sonograms show, during wrist flexion, the median nerve (arrow) dislocates, radial to ulnar, with respect to the flexor digitorum superficialis muscle and tendons (FDS) (A–C). FCR, flexor carpi radialis; RA, radial artery
FIGURE 2
FIGURE 2
Axial sonograms show, during wrist extension, the median nerve (arrow) returns to its natural location (A–C). FCR, flexor carpi radialis; FDS, flexor digitorum superficialis; RA: radial artery
See this image and copyright information in PMC

References

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    1. Cobb TK, Dalley BK, Posteraro RH, Lewis RC. Anatomy of the flexor retinaculum. J Hand Surg Am. 1993. Jan;18(1):91‐99. - PubMed
    1. Draghi F, Ferrozzi G, Bortolotto C, Ballerini D, Fiorina I, Preda L. Sonography before and after carpal tunnel release: video article. J Ultrasound. 2020. Sep;23(3):363‐364. - PMC - PubMed

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