Advanced

Vibration thresholds in carpal tunnel syndrome assessed by multiple frequency vibrometry : a case-control study

Flondell, Magnus LU ; Rosén, Birgitta LU ; Andersson, Gert LU ; Schyman, Tommy; Dahlin, Lars B LU and Björkman, Anders LU (2017) In Journal of Occupational Medicine and Toxicology 12(34). p.34-34
Abstract

Background: Carpal tunnel syndrome (CTS) is the most common compression neuropathy, but there is no gold standard for establishing the diagnosis. The ability to feel vibrations in the fingertips is dependent on the function in cutaneous receptors and afferent nerves. Our aim was to investigate vibration perception thresholds (VPTs) in patients with CTS using multi-frequency vibrometry.

Methods: Sixty-six patients (16 men and 50 women) with CTS, diagnosed from clinical signs and by electroneurography, and 66 matched healthy controls were investigated with multi-frequency vibrometry. The VPTs were assessed at seven frequencies (8, 16, 32, 64, 125, 250, and 500 Hz) in the index finger and little finger bilaterally. The severity of... (More)

Background: Carpal tunnel syndrome (CTS) is the most common compression neuropathy, but there is no gold standard for establishing the diagnosis. The ability to feel vibrations in the fingertips is dependent on the function in cutaneous receptors and afferent nerves. Our aim was to investigate vibration perception thresholds (VPTs) in patients with CTS using multi-frequency vibrometry.

Methods: Sixty-six patients (16 men and 50 women) with CTS, diagnosed from clinical signs and by electroneurography, and 66 matched healthy controls were investigated with multi-frequency vibrometry. The VPTs were assessed at seven frequencies (8, 16, 32, 64, 125, 250, and 500 Hz) in the index finger and little finger bilaterally. The severity of the CTS was graded according to Padua and the patient's subjective symptoms were graded according to the Boston carpal tunnel questionnaire. Touch thresholds were assessed using the Semmes-Weinstein monofilaments.

Results: Patients with CTS had significantly higher VPTs at all frequencies in the index finger and in 6 out of 7 frequencies in the little finger compared to the controls. However, the VPT was not worse in patients with more severe CTS. Patients with unilateral CTS showed significantly higher VPTs in the affected hand. There were no correlations between VPTs and electrophysiological parameters, subjective symptoms, or touch threshold.

Conclusions: Patients with CTS had impaired VPTs at all frequencies compared to the controls. Since the VPTs are dependent on function in peripheral receptors and their afferent nerves, multi-frequency vibrometry could possibly lead to diagnosis of CTS.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Occupational Medicine and Toxicology
volume
12
issue
34
pages
34 - 34
publisher
BioMed Central
ISSN
1745-6673
DOI
10.1186/s12995-017-0181-6
language
English
LU publication?
yes
id
37472939-4c52-422d-ae36-d99ed1087d67
date added to LUP
2019-04-21 14:18:32
date last changed
2019-04-24 09:38:06
@article{37472939-4c52-422d-ae36-d99ed1087d67,
  abstract     = {<p>Background: Carpal tunnel syndrome (CTS) is the most common compression neuropathy, but there is no gold standard for establishing the diagnosis. The ability to feel vibrations in the fingertips is dependent on the function in cutaneous receptors and afferent nerves. Our aim was to investigate vibration perception thresholds (VPTs) in patients with CTS using multi-frequency vibrometry.</p><p>Methods: Sixty-six patients (16 men and 50 women) with CTS, diagnosed from clinical signs and by electroneurography, and 66 matched healthy controls were investigated with multi-frequency vibrometry. The VPTs were assessed at seven frequencies (8, 16, 32, 64, 125, 250, and 500 Hz) in the index finger and little finger bilaterally. The severity of the CTS was graded according to Padua and the patient's subjective symptoms were graded according to the Boston carpal tunnel questionnaire. Touch thresholds were assessed using the Semmes-Weinstein monofilaments.</p><p>Results: Patients with CTS had significantly higher VPTs at all frequencies in the index finger and in 6 out of 7 frequencies in the little finger compared to the controls. However, the VPT was not worse in patients with more severe CTS. Patients with unilateral CTS showed significantly higher VPTs in the affected hand. There were no correlations between VPTs and electrophysiological parameters, subjective symptoms, or touch threshold.</p><p>Conclusions: Patients with CTS had impaired VPTs at all frequencies compared to the controls. Since the VPTs are dependent on function in peripheral receptors and their afferent nerves, multi-frequency vibrometry could possibly lead to diagnosis of CTS.</p>},
  author       = {Flondell, Magnus and Rosén, Birgitta and Andersson, Gert and Schyman, Tommy and Dahlin, Lars B and Björkman, Anders},
  issn         = {1745-6673},
  language     = {eng},
  number       = {34},
  pages        = {34--34},
  publisher    = {BioMed Central},
  series       = {Journal of Occupational Medicine and Toxicology},
  title        = {Vibration thresholds in carpal tunnel syndrome assessed by multiple frequency vibrometry : a case-control study},
  url          = {http://dx.doi.org/10.1186/s12995-017-0181-6},
  volume       = {12},
  year         = {2017},
}