Effect of Neural Mobilization Exercises in Patients With Low Back-Related Leg Pain With Peripheral Nerve Sensitization: A Prospective, Controlled Trial

Efficacy of neuromobilization in the treatment of low back pain: Systematic review and meta-analysis

BACKGROUND

Low back pain (LBP) is a leading cause of disability. Neuromobilization (NM) as a physical therapy technique, offers some degree of symptom improvement. However, some studies have shown that NM can significantly reduce the symptoms of LBP, while others have failed to find similar positive effects.

OBJECTIVE

This study aims to investigate the effectiveness of NM for LBP.

DATA SOURCES

A literature search was conducted across five databases (MEDLINE, Embase, Cochrane Library, PubMed, and Web of Science) from their inception to December 2023. Study main measures assessed pain, disability, and straight leg raise angle to determine the degree of improvement in patients.

RESULTS

Seven randomized controlled trials were included in the analysis. The findings indicated that NM interventions in patients with LBP were more effective than control groups in improving Visual Analog Scale scores (mean difference = 0.62, 95% CI (0.03, 1.21)) and Oswestry Disability Index scores (mean difference = 7.54, 95% CI (4.98, 10.10)). There was no significant difference in straight leg raise results (mean difference = 0.18, 95% CI (-0.08, 0.44)).

CONCLUSIONS

NM demonstrated effectiveness in improving Visual Analog Scale and Oswestry Disability Index outcomes in patients with LBP, but straight leg raise outcomes are still uncertain and until more high-quality studies are included, the effectiveness of NM for SLR remains unknown.

Effectiveness of Neural Mobilisation on Pain Intensity, Functional Status, and Physical Performance in Adults with Musculoskeletal Pain - A Systematic Review with Meta-Analysis

OBJECTIVE

To investigate up-to-date evidence of the effectiveness of neural mobilisation techniques compared with any type of comparator in improving pain, function, and physical performance in people with musculoskeletal pain.

DATA SOURCES

The following sources were consulted: PubMed, Web of Science, CENTRAL, CINAHL, Scopus, and PEDro databases; scientific repositories; and clinical trial registers. The last search was performed on 01/06/2023.

METHODS

Two reviewers independently assessed the studies for inclusion. We included randomised, quasi-randomised, and crossover trials on musculoskeletal pain in which at least one group received neural mobilisation (alone or as part of multimodal interventions). Meta-analyses were performed where possible. The RoB 2 and the Grading of Recommendations Assessment, Development and Evaluation tools were used to assess risk of bias and to rate the certainty of evidence, respectively.

RESULTS

Thirty-nine trials were identified. There was a significant effect favouring neural mobilisation for pain and function in people with low back pain, but not for flexibility. For neck pain, there was a significant effect favouring neural mobilisation as part of multimodal interventions for pain, but not for function and range of motion. Regarding other musculoskeletal conditions, it was not possible to conclude whether neural mobilisation is effective in improving pain and function. There was very low confidence for all effect estimates.

CONCLUSIONS

Neural mobilisation as part of multimodal interventions appears to have a positive effect on pain for patients with low back pain and neck pain and on function in people with low back pain. For the other musculoskeletal conditions, results are inconclusive.

Peripheral and central changes induced by neural mobilization in animal models of neuropathic pain: a systematic review

Introduction

Neural mobilization (NM) is a physiotherapy technique involving the passive mobilization of limb nerve structures with the aim to attempt to restore normal movement and structural properties. In recent years, human studies have shown pain relief in various neuropathic diseases and other pathologies as a result of this technique. Improvement in the range of motion (ROM), muscle strength and endurance, limb function, and postural control were considered beneficial effects of NM. To determine which systems generate these effects, it is necessary to conduct studies using animal models. The objective of this study was to gather information on the physiological effects of NM on the peripheral and central nervous systems (PNS and CNS) in animal models.

Methods

The search was performed in Medline, Pubmed and Web of Science and included 8 studies according to the inclusion criteria.

Results

The physiological effects found in the nervous system included the analgesic, particularly the endogenous opioid pathway, the inflammatory, by modulation of cytokines, and the immune system.

Conclusion

On the basis of these results, we can conclude that NM physiologically modifies the peripheral and central nervous systems in animal models.

Effects of spinal manipulation or mobilization as an adjunct to neurodynamic mobilization for lumbar disc herniation with radiculopathy: a randomized clinical trial

OBJECTIVES

To determine the long-term clinical effects of spinal manipulative therapy (SMT) or mobilization (MOB) as an adjunct to neurodynamic mobilization (NM) in the management of individuals with Lumbar Disc Herniation with Radiculopathy (DHR).

DESIGN

Parallel group, single-blind randomized clinical trial.

SETTING

The study was conducted in a governmental tertiary hospital.

PARTICIPANTS

Forty (40) participants diagnosed as having a chronic DHR (≥3 months) were randomly allocated into two groups with 20 participants each in the SMT and MOB groups.

INTERVENTIONS

Participants in the SMT group received high-velocity, low-amplitude manipulation, while those in the MOB group received Mulligans' spinal mobilization with leg movement. Each treatment group also received NM as a co-intervention, administered immediately after the SMT and MOB treatment sessions. Each group received treatment twice a week for 12 weeks.

OUTCOME MEASURES

The following outcomes were measured at baseline, 6, 12, 26, and 52 weeks post-randomization; back pain, leg pain, activity limitation, sciatica bothersomeness, sciatica frequency, functional mobility, quality of life, and global effect. The primary outcomes were pain and activity limitation at 12 weeks post-randomization.

RESULTS

The results indicate that the MOB group improved significantly better than the SMT group in all outcomes (p < 0.05), and at all timelines (6, 12, 26, and 52 weeks post-randomization), except for sensory deficit at 52 weeks, and reflex and motor deficits at 12 and 52 weeks. These improvements were also clinically meaningful for neurodynamic testing and sensory deficits at 12 weeks, back pain intensity at 6 weeks, and for activity limitation, functional mobility, and quality of life outcomes at 6, 12, 26, and 52 weeks of follow-ups. The risk of being improved at 12 weeks post-randomization was 40% lower (RR = 0.6, CI = 0.4 to 0.9, p = 0.007) in the SMT group compared to the MOB group.

CONCLUSION

This study found that individuals with DHR demonstrated better improvements when treated with MOB plus NM than when treated with SMT plus NM. These improvements were also clinically meaningful for activity limitation, functional mobility, and quality of life outcomes at long-term follow-up.

TRIAL REGISTRATION

Pan-African Clinical Trial Registry: PACTR201812840142310.

Mechanism, application and effect evaluation of nerve mobilization in the treatment of low back pain: A narrative review

Lower back pain is a prevalent condition affecting people across all age groups and causing significant personal and societal burdens. While numerous treatments exist, nerve mobilization has emerged as a promising approach for managing lower back pain. Nerve mobilization involves applying gentle and rhythmic movements to the affected nerves, promoting normal nerve function and releasing tension. It has been well documented that nerve mobilization can be effective in reducing pain and improving function in patients with lower back pain, but the underlying mechanisms have not been clarified. This study aims to review the mechanisms of nerve mobilization in the management of lower back pain, its application, and effectiveness evaluation, and provide a potential solution for managing lower back pain.