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Assessment of the utility of ultrasonography with high-frequency transducers in
the diagnosis of entrapment neuropathies
#MMPMID26674099
Kowalska B
J Ultrason
2014[Dec]; 14
(59
): 371-92
PMID26674099
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The primary aim of this paper was to assess the relevance of high-frequency
ultra-sound examination in qualifying patients for either surgical or
conservative treatment of peripheral entrapment neuropathies. The study was
conducted in a group of 55 patients aged 7-83 (mean age 43.6), including 28 males
and 27 females, who in 2009-2011 were referred to an ultrasound examination due
to a clinical suspicion of entrapment neuropathies. For the purposes of the
analysis, the patients were divided into four groups: carpal tunnel syndrome (1),
ulnar nerve entrapment (2) (cubital tunnel syndrome and Guyon's canal syndrome),
posterior interosseous nerve syndrome (3) and other entrapment neuropathies (4).
The cases of isolated idiopathic carpal tunnel syndrome were excluded from the
analysis. All patients underwent the interview, physical examination and
ultrasound examination. Ultrasound examinations were performed with Esaote MyLab
50 and MyLab 60 systems using high-frequency broadband linear transducers: 6-18
MHz. Sixty-seven percent of patients (37 persons) underwent a neurophysiological
test. Nerve echostructure, its hyperemia as well as nerve cross-sectional area
or, in the case of small nerves, diameter were assessed in all patients.
Furthermore, the following were assessed in individual groups: notch sign in
group 1, nerve instability in a dynamic ultrasound examination in group 2, nerve
angulation in a dynamic ultrasound examination and tenderness on nerve
compression at the site of the visualized pathology in group 3. The analyses of
the collected material were performed by means of descriptive statistics. The
results of clinical and surgical verification were consistent with ultrasound
findings in 96.4%. The results indicate that high-frequency ultrasonography is a
valuable method in qualifying patients for various types of treatment of
peripheral neuropathies resulting from compression.
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