The effect of dry needling on the radiating pain in subjects with discogenic low-back pain: A randomized control trial

Ashraf Mahmoudzadeh, Zahra Sadat Rezaeian, Abdolkarim Karimi, Jan Dommerholt, Ashraf Mahmoudzadeh, Zahra Sadat Rezaeian, Abdolkarim Karimi, Jan Dommerholt

Abstract

Background: Disk herniation is the most common cause of radiating low back pain (LBP) in subjects under 60 years of age. The present study aims to compare the effect of dry needling (DN) and a standard conservative approach on the pain and function in subjects with discogenic radiating LBP.

Materials and methods: Fifty-eight subjects with discogenic radicular LBP were screened and randomized into control (Standard physical therapy, n = 29) and experimental group (Standard physical therapy and DN, n = 29). Radiating pain intensity and disability were measured using visual analog scale (VAS) and Oswestry Disability indices at baseline, at the end of treatment and 2 months after the last intervention session. The changes in pain intensity and disability were studied using a 3 × 2 repeated measures analysis of variance considering time as the within-subject factor and group as the between-subject.

Results: Pain intensity and disability scores decreased significantly in both experimental and control groups (experimental group: VAS = 37.24, Oswestry Disability Index [ODI] =28.48, control group: VAS = 45.5, ODI = 32.96), following the intervention. The change continued during the follow-up period (P < 0.001 for all comparisons). Pain and disability improvement, however, were more significant in experimental group, both in post intervention (experimental group: VAS = 25.17, ODI = 22.17, control group: VAS = 42.4, ODI = 30.27) (P = 0.05 and P = 0.03, respectively) and follow-up measures (P = 0.006 and P = 0.002, respectively).

Conclusion: Both intervention strategies seem to significantly improve pain and disability immediately following intervention, where the improvement continued during 2 months after the last active intervention. Therefore, supplementary DN application may enhance the effect of the standard intervention considerably.

Keywords: Discogenic; dry needling; low back pain.

Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
The CONSORT 2010 diagram for attrition of subjects in the study
Figure 2
Figure 2
Comparing pain intensity among surveyed groups before, after, and 2 months after intervention. The asterisk represents a significant difference (α = 0.05). The standard deviations are presented as error bars
Figure 3
Figure 3
A comparison of pain intensity among surveyed groups before, after, and 2 months after interventions. The asterisk represents a significant difference (α = 0.05). The standard deviations are presented as error bars
Figure 4
Figure 4
Comparison of disability score between study groups before, after, and 2 months after interventions. Asterisk represents significant difference (α = 0.05)

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