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Scandinavian Journal of Pain

Official Journal of the Scandinavian Association for the Study of Pain

Editor-in-Chief: Werner, Mads


CiteScore 2018: 0.85

SCImago Journal Rank (SJR) 2018: 0.494
Source Normalized Impact per Paper (SNIP) 2018: 0.427

Online
ISSN
1877-8879
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Volume 16, Issue 1

Issues

Experimental neck muscle pain increase pressure pain threshold over cervical facet joints

Ning Qu
  • SMI, Department of Health and Science Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ René Lindstrøm
  • SMI, Department of Health and Science Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Rogerio Pessoto Hirata
  • SMI, Department of Health and Science Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Thomas Graven-Nielsen
  • Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health and Science Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2017-07-01 | DOI: https://doi.org/10.1016/j.sjpain.2017.04.052

Abstract

Aims

Evaluate pressure pain threshold (PPT) over cervical facet joints before and after injection of experimental pain in the trapezius and multifidus muscles.

Methods

Fourteen healthy subjects (6 women) received randomized ultrasound-guided injections of hypertonic saline (5.8%), in the right multifidus muscle medial to C4/C5 facet joint and in the right trapezius muscle at the midpoint between C7 spinous process and acromion. The saline-induced pain intensity was assessed on a VAS scale. Before and during saline-induced pain PPTs were assessed by pressure algometry bilaterally over C2/C3 and C5/C6 facet joints. Three-way repeated-measures ANOVA with factors PPT location, injection site, and time was used for analysis. Post-hoc analysis was done by Bonferroni.

Results

Saline-induced trapezius muscle pain increased PPTs over all facet joints (P < 0.05) compared with before pain. Saline-induced multifidus muscle pain increased PPTs bilaterally over C2/C3 facet joints and over the left C5/C6 facet joint (P < 0.05) compared with before pain.

Conclusions

Trapezius muscle pain increased PPT over assessed facet joints. Similar results were found for multifidus muscle pain except for the right C5/C6 facet joint, which was close to the injection site. Such findings may reflect descending inhibitory control acting on structures furthest away from the painful structure.

About the article

Published Online: 2017-07-01

Published in Print: 2017-07-01


Citation Information: Scandinavian Journal of Pain, Volume 16, Issue 1, Pages 182–183, ISSN (Online) 1877-8879, ISSN (Print) 1877-8860, DOI: https://doi.org/10.1016/j.sjpain.2017.04.052.

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