Ultrasonography of ulnar neuropathy at the elbow: Axonal involvement leads to greater nerve swelling than demyelinating nerve lesion

Highlights ► High-resolution ultrasound shows pronounced focal morphological abnormalities of the ulnar nerve at the elbow in UNE, which may be of significant diagnostic help particularly in nerve lesions with non-localizing axonal loss. ► Nerve size parameters, such as the largest cross sectional a...

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Bibliographic Details
Published in:Clinical neurophysiology 2013-03, Vol.124 (3), p.619-625
Main Authors: Scheidl, Erika, Böhm, Josef, Farbaky, Zsófia, Simó, Magdolna, Bereczki, Dániel, Arányi, Zsuzsanna
Format: Article
Language:English
Subjects:
Adult
Aged
Axonal lesion
Axons - diagnostic imaging
Axons - pathology
Demyelinating Diseases - diagnostic imaging
Demyelinating Diseases - pathology
Demyelinating lesion
Edema - diagnostic imaging
Edema - pathology
Elbow - diagnostic imaging
Elbow - pathology
Female
High resolution ultrasonography
Humans
Male
Middle Aged
Neural Conduction - physiology
Neurology
Ulnar nerve
Ulnar Nerve - diagnostic imaging
Ulnar Nerve - pathology
Ulnar Neuropathies - diagnostic imaging
Ulnar Neuropathies - pathology
Ultrasonography
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Summary:Highlights ► High-resolution ultrasound shows pronounced focal morphological abnormalities of the ulnar nerve at the elbow in UNE, which may be of significant diagnostic help particularly in nerve lesions with non-localizing axonal loss. ► Nerve size parameters, such as the largest cross sectional area (CSAmax ) of the ulnar nerve around the elbow and the cubital-to-humeral nerve area ratio (CHR) show significantly larger nerve swelling in axonal lesions, as compared to predominantly demyelinating lesions. ► The subtype of axonal lesion also affects nerve size parameters: CSAmax values in patients with sensorimotor axonal lesion were significantly higher than in those with pure sensory axonal involvement.
ISSN:1388-2457
1872-8952
DOI:10.1016/j.clinph.2012.08.027