Effectiveness of dry needling for chronic nonspecific neck pain: a randomized, single-blinded, clinical trial

Criteria Used for the Diagnosis of Myofascial Trigger Points in Clinical Trials on Physical Therapy: Updated Systematic Review

OBJECTIVE

The objective of this study was to conduct an updated systematic review of diagnostic criteria for myofascial trigger points (MTrPs) used in clinical trials of physical therapy interventions from 2007 to 2019.

METHODS

MEDLINE and Physiotherapy Evidence Database (PEDro) were searched using the following MeSH keywords: "trigger points," "trigger point," "myofascial trigger point," "myofascial trigger points," "myofascial pain," and "myofascial pain syndrome." The MeSH keywords were combined by using Boolean operators "OR"/"AND." All physiotherapy clinical trials including patients with musculoskeletal conditions characterized by at least 1 active MTrP or latent MTrP in any body area were selected. We pooled data from an individual criterion and criteria combinations used to diagnose MTrPs. The protocol was developed in accordance with the PRISMA-P guidelines.

RESULTS

Of 478 possibly relevant publications, 198 met the inclusion criteria. Of these 198 studies, 129 studies (65.1%) stated specifically the diagnostic criteria used for MTrPs in the main text, 56 studies (28.3%) failed to report any method whereby MTrP was diagnosed, and 13 studies (6.6%) adopted expert-based definitions for MTrPs without specification. Of 129 studies, the 6 criteria applied most commonly were: "spot tenderness" (n=125, 96.9%), "referred pain" (95, 73.6%), "local twitch response" (63, 48.8%), pain recognition (59, 45.7%), limited range of motion" (29, 22.5%), and "jump sign" (10, 7.8%). Twenty-three combinations of diagnostic criteria were identified. The most frequently used combination was "spot tenderness," "referred pain," and "local twitch response" (n=28 studies, 22%).

CONCLUSIONS

A number of the included studies failed in properly reporting the MTrP diagnostic criteria. Moreover, high variability in the use of MTrP diagnostic was also observed. Spot tenderness, referred pain, and local twitch response were the 3 most popular criteria (and the most frequently used combination). A lack of transparency in the reporting of MTrP diagnostic criteria is present in the literature.

REGISTRY

This systematic review was registered under the Centre for Reviews and Dissemination, PROSPERO number: CRD42018087420.

Benefits of Adding Gluteal Dry Needling to a Four-Week Physical Exercise Program in a Chronic Low Back Pain Population. A Randomized Clinical Trial

OBJECTIVE

To determine if adding dry needling to a four-week exercise program has an additional benefit compared with adding sham dry needling to the same exercise program in subjects with chronic low back pain.

DESIGN

Randomized clinical trial.

SETTING

Physiotherapy and Pain Clinic of Alcala University.

SUBJECTS

Forty-six patients with chronic low back pain.

METHODS

Subjects were randomized to two groups: the dry needling group (N = 23) or sham dry needling group (N = 23). Both groups received a four-week exercise program and before the exercise started a session of dry needling or sham dry needling. Pain (visual analog scale), disability (Roland-Morris Questionnaire), and fear avoidance beliefs (Fear Avoidance Beliefs Questionnaire) were assessed at baseline, after treatment, and at three-month follow-up. Pressure pain thresholds (algometer) were measured at baseline, after the dry needling or the sham dry needling, and after treatment.

RESULTS

Both groups showed significant improvements for all variables. In the between-group comparison, the dry needling group improved significantly in pain at three-month follow-up and pressure pain thresholds at the end of treatment for all measures, and at three-month follow-up there was no improvement in gluteus medium.

CONCLUSIONS

In chronic low back patients, adding dry needling to a four-week exercise program has an additional benefit in pain and sensitivity compared with adding sham dry needling to the same exercise program.

Thermotherapy Plus Neck Stabilization Exercise for Chronic Nonspecific Neck Pain in Elderly: A Single-Blinded Randomized Controlled Trial

Neck pain is a serious problem for public health. This study aimed to compare the effects of thermotherapy plus neck stabilization exercise versus neck stabilization exercise alone on pain, neck disability, muscle properties, and alignment of the neck and shoulder in the elderly with chronic nonspecific neck pain. This study is a single-blinded randomized controlled trial. Thirty-five individuals with chronic nonspecific neck pain were randomly allocated to intervention (n = 18) or control (n = 17) groups. The intervention group received thermotherapy with a salt-pack for 30 min and performed a neck stabilization exercise for 40 min twice a day for 5 days (10 sessions). The control group performed a neck stabilization exercise at the same time points. Pain intensity, pain pressure threshold (PPT), neck disability index, muscle properties, and alignment of the neck and shoulder were evaluated before and after the intervention. Significant time and group interactions were observed for pain at rest (p < 0.001) and during movement (p < 0.001), and for PPT at the upper-trapezius (p < 0.001), levator-scapula (p = 0.003), and splenius-capitis (p = 0.001). The disability caused by neck pain also significantly changed between groups over time (p = 0.005). In comparison with the control group, the intervention group showed significant improvements in muscle properties for the upper-trapezius (tone, p = 0.021; stiffness, p = 0.017), levator-scapula (stiffness, p = 0.025; elasticity, p = 0.035), and splenius-capitis (stiffness, p = 0.012), and alignment of the neck (p = 0.016) and shoulder (p < 0.001) over time. These results recommend the clinical use of salt pack thermotherapy in addition to neck stabilization exercise as a complementary intervention for chronic nonspecific neck pain control.

Dry Needling Combined With Guideline-Based Physical Therapy Provides No Added Benefit in the Management of Chronic Neck Pain: A Randomized Controlled Trial

OBJECTIVE

To determine the added benefit of combining dry needling with a guideline-based physical therapy treatment program consisting of exercise and manual therapy on pain and disability in people with chronic neck pain.

DESIGN

Randomized controlled trial.

METHODS

Participants were randomized to receive either guideline-based physical therapy or guideline-based physical therapy plus dry needling. The primary outcomes, measured at 1 month post randomization, were average pain intensity in the previous 24 hours and previous week, measured with a numeric pain-rating scale (0-10), and disability, measured with the Neck Disability Index (0-100). The secondary outcomes were pain and disability measured at 3 and 6 months post randomization and global perceived effect, quality of sleep, pain catastrophizing, and self-efficacy measured at 1, 3, and 6 months post randomization.

RESULTS

One hundred sixteen participants were recruited. At 1 month post randomization, people who received guideline-based physical therapy plus dry needling had a small reduction in average pain intensity in the previous 24 hours (mean difference, 1.56 points; 95% confidence interval [CI]: 1.11, 2.36) and in the previous week (mean difference, 1.20 points; 95% CI: 1.02, 2.21). There was no effect of adding dry needling to guideline-based physical therapy on disability at 1 month post randomization (mean difference, -2.08 points; 95% CI: -3.01, 5.07). There was no effect for any of the secondary outcomes.

CONCLUSION

When combined with guideline-based physical therapy for neck pain, dry needling resulted in small improvements in pain only at 1 month post randomization. There was no effect on disability. J Orthop Sports Phys Ther 2020;50(8):447-454. Epub 9 Apr 2020. doi:10.2519/jospt.2020.9389.

Myofascial pain syndrome and trigger points: evaluation and treatment in patients with musculoskeletal pain

PURPOSE OF REVIEW

Myofascial pain syndrome is a chronic pain condition characterized by the presence of myofascial trigger point, a hyperirritable painful spot involving a limited number of muscle fibers. The literature suggest that myofascial trigger points should be considered peripheral pain generators and this critical review will summarize recent findings concerning the clinical evaluation and the treatment of myofascial trigger points.

RECENT FINDINGS

The clinical features of myofascial trigger points and their contribution to the patient pain and disability have been detailed in several recent studies, which support the clinical relevance of the condition. Recent studies reported that manual palpation to identify MTrPs has good reliability, although some limitations are intrinsic to the diagnostic criteria. During the last decade, a plethora of treatments have been proposed and positive effects on pain and function demonstrated.

SUMMARY

The myofascial trigger point phenomenon has good face validity and is clinically relevant. Clinicians are encouraged to consider the contribution of myofascial trigger points to the patient's pain and disability through a careful medical history and a specific manual examination. Patients with myofascial trigger points will benefit from a multimodal treatment plan including dry needling and manual therapy techniques. Internal and external validity of research within the field must be improved.

Short-Term Effects of PENS versus Dry Needling in Subjects with Unilateral Mechanical Neck Pain and Active Myofascial Trigger Points in Levator Scapulae Muscle: A Randomized Controlled Trial

Procedures such as dry needling (DN) or percutaneous electrical nerve stimulation (PENS) are commonly proposed for the treatment of myofascial trigger points (MTrP). The aim of the present study is to investigate if PENS is more effective than DN in the short term in subjects with mechanical neck pain. This was an evaluator-blinded randomized controlled trial. Subjects were recruited through announcements and randomly allocated into DN or PENS groups. Pain intensity, disability, pressure pain threshold (PPT), range of motion (ROM), and side-bending strength were measured. The analyses included mixed-model analyses of variance and pairwise comparisons with Bonferroni correction. The final sample was composed of 44 subjects (22 per group). Both groups showed improvements in pain intensity (ηp2 = 0.62; p < 0.01), disability (ηp2 = 0.74; p < 0.01), PPT (ηp2 = 0.79; p < 0.01), and strength (ηp2 = 0.37; p < 0.01). The PENS group showed greater improvements in disability (mean difference, 3.27; 95% CI, 0.27-6.27) and PPT (mean difference, 0.88-1.35; p < 0.01). Mixed results were obtained for ROM. PENS seems to produce greater improvements in PPT and disability in the short term.

Dry needling for spine related disorders: a scoping review

INTRODUCTION/BACKGROUND

The depth and breadth of research on dry needling (DN) has not been evaluated specifically for symptomatic spine related disorders (SRD) from myofascial trigger points (TrP), disc, nerve and articular structures not due to serious pathologies. Current literature appears to support DN for treatment of TrP. Goals of this review include identifying research published on DN treatment for SRD, sites of treatment and outcomes studied.

METHODS

A scoping review was conducted following Levac et al.'s five part methodological framework to determine the current state of the literature regarding DN for patients with SRD.

RESULTS

Initial and secondary search strategies yielded 55 studies in the cervical (C) region (71.43%) and 22 in the thoracolumbar-pelvic (TLP) region (28.57%). Most were randomized controlled trials (60% in C, 45.45% in TLP) and clinical trials (18.18% in C, 22.78% in TLP). The most commonly treated condition was TrP for both the C and TLP regions. In the C region, DN was provided to 23 different muscles, with the trapezius as treatment site in 41.88% of studies. DN was applied to 31 different structures in the TLP region. In the C region, there was one treatment session in 23 studies (41.82%) and 2-6 treatments in 25 (45.45%%). For the TLP region, one DN treatment was provided in 8 of the 22 total studies (36.36%) and 2-6 in 9 (40.9%). The majority of experimental designs had DN as the sole intervention. For both C and TLP regions, visual analogue scale, pressure pain threshold and range of motion were the most common outcomes.

CONCLUSION

For SRD, DN was primarily applied to myofascial structures for pain or TrP diagnoses. Many outcomes were improved regardless of diagnosis or treatment parameters. Most studies applied just one treatment which may not reflect common clinical practice. Further research is warranted to determine optimal treatment duration and frequency. Most studies looked at DN as the sole intervention. It is unclear whether DN alone or in addition to other treatment procedures would provide superior outcomes. Functional outcome tools best suited to tracking the outcomes of DN for SRD should be explored.

Effects of pain neuroscience education and dry needling for the management of patients with chronic myofascial neck pain: a randomized clinical trial

OBJECTIVES

The aim of this study was to observe the medium-term effects on pain, disability, and psychological factors of a combination of myofascial trigger point (MTrP) dry needling (DN) with pain neuroscience education (PNE) versus DN alone versus control care as usual (CUC) in patients with chronic neck pain.

METHODS

A total of 60 patients were randomly selected in a Spanish National Health Service Public Hospital and divided into three groups: 6 sessions of DN with 3 sessions of PNE (TrPDN + PNE group, n = 21), 6 sessions of DN alone (TrPDN group, n = 20), or 10 sessions of usual care (CUC group, n = 19). The primary outcome was neck pain intensity, while neck disability, medication intake, and psychological factors were secondary outcomes. These variables were measured at baseline, post-treatment, and at 1 month and 3 months after treatment.

RESULTS

TrPDN + PNE and DN alone were associated with greater reductions in pain intensity and disability compared to CUC (p < 0.01). TrPDN + PNE resulted in greater improvements in kinesiophobia, pain anxiety, and pain-related beliefs than DN alone and CUC (p < 0.01). No differences between groups were observed in medication intake, quality of life, catastrophizing, depression, or fear of pain (p > 0.05).

DISCUSSION

Provision of PNE and DN in the management of chronic neck pain in a Spanish National Health Service Public Hospital was associated with greater improvements in psychological factors than DN therapy only.

CONCLUSION

DN alone was more effective at reducing chronic non-specific neck pain and disability than CUC at 3-month follow-up. However, the inclusion of PNE combined with DN resulted in greater improvements in kinesiophobia, pain anxiety, and pain-related beliefs.

TRIAL REGISTRATION NUMBER

NCT03095365 (ClinicalTrials.gov).

Is Cervical Traction Effective in Chronic Nonspecific Neck Pain Patients With Unsatisfactory NSAID Control? A Nomogram to Predict Effectiveness

OBJECTIVE

In this retrospective study, our objective was to establish a nomogram to predict the effectiveness of cervical traction in young and middle-aged chronic nonspecific neck pain (CNNP) patients with unsatisfactory nonsteroidal anti-inflammatory drug (NSAID) control. For CNNP patients with unsatisfactory NSAID control, the effectiveness of cervical traction varies. Neck muscle fat infiltration and clinical features may associate with the effectiveness.

METHODS

A total of 186 suitable patients were classified into a training data set (from August 2015 to July 2018, n = 118) and a validation data set (from August 2018 to June 2019, n = 68) with time sequence. All patients were included to receive magnetic resonance imaging scan to calculate posterior cervical fat and muscle features, then undergoing unified cervical traction in an outpatient clinic. The least absolute shrinkage and selection operator (LASSO) regression model was used to select potentially relevant features to predict effectiveness possibility of cervical traction. Multivariable logistic regression analysis was used to develop the predicting model, presenting with a nomogram. The performance of the nomogram was assessed based on its calibration, discrimination, and clinical utility.

RESULTS

Through the LASSO regression model, we identified 4 predictors including sex, good exercise compliance, the ratio of the cross-sectional area (CSA) between fat and muscle on C5 level (C5 fat CSA/muscle CSA), the ratio of CSA between fat and centrum on C5 level (C5 fat CSA/centrum muscle CSA). The nomogram provided good calibration and discrimination in the training cohort, showing an area under the curve (AUC) of 0.704 (95% CI, 0.608-0.799) and good concordance between the predicted and actual probabilities with Spiegelhalter's Z-test (P = 0.835). Discrimination of the model in the validation data set was acceptable, with AUC of 0.691 (95% CI, 0.564-0.817). Decision curve analysis revealed the nomogram to be clinically useful.

CONCLUSIONS

Male sex, good exercise compliance, lower C5 fat CSA/centrum CSA, and and lower C5 fat CSA/muscle CSA could be favorable features to predict the effectiveness of cervical traction in CNNP patients with unsatisfactory NSAID control.

Effects of dry needling of active trigger points in the scalene muscles in individuals with mechanical neck pain: a randomized clinical trial

OBJECTIVE

The aim of this study was to compare the effects of dry needling (DN) versus pressure release over scalene muscle trigger points (TrPs) on pain, related disability, and inspiratory vital capacity in individuals with neck pain.

METHODS

In this randomized, single-blind trial, 30 patients with mechanical neck pain and active TrPs in the scalene musculature were randomly allocated to trigger point dry needling (TrP-DN; n = 15) or pressure release (n = 15) groups. The DN group received a single session of DN of active TrPs in the anterior scalene muscles, and the pressure release group received a single session of TrP pressure release over the same muscle lasting 30 s. The primary outcome was pain intensity as assessed by a numerical pain rate scale (NPRS, 0-10). Secondary outcomes included disability (neck disability index, NDI) and inspiratory vital capacity. Outcomes were assessed at baseline and 1 day (immediately post), 1 week, and 1 month after the treatment session. Data were expressed as mean score difference (Δ) and standardized mean difference (SMD).

RESULTS

Patients receiving DN exhibited a greater decrease in pain intensity than those receiving TrP pressure release at 1 month (Δ 1.2 (95% CI-1.8, -0.6), p = 0.01), but not immediately (1 day) or 1 week after. Patients in the DN group exhibited a greater increase in inspiratory vital capacity at all follow-up time points (Δ 281 mm (95% CI 130, 432) immediately after, Δ 358 mm (95% CI 227, 489) 1 week after, and Δ 310 mm (95% CI 180, 440) 1 month after treatment) than those in the pressure release group (p = 0.006). Between-group effect sizes were large at all follow-up time points (1.1 > SMD > 1.3) in favor of DN.

CONCLUSION

This trial suggests that a single session of DN over active TrPs in the scalene muscles could be effective at reducing pain and increasing inspiratory vital capacity in individuals with mechanical neck pain. Future studies are needed to further confirm these results.

Efficacy of dry needling as an adjunct to manual therapy for patients with chronic mechanical neck pain: a randomised clinical trial

OBJECTIVE

Chronic mechanical neck pain is associated with musculoskeletal tissue alterations. Active trigger points in the trapezius and levator scapulae muscles are common in patients with chronic mechanical neck pain. In this study, we compared the effect of dry needling (DN) combined with manual therapy (MT) to sham dry needling (SDN) combined with MT on pain, pain pressure threshold, cervical range of motion and neck disability in patients with chronic mechanical neck pain.

METHODS

A randomised, single-blind clinical trial was carried out involving 101 participants with chronic mechanical neck pain, divided into an intervention group (DN+MT, n=47) and a control group (SDN+MT, n=54). Participants received two treatment sessions. The intervention group received MT in conjunction with DN of the most mechano-sensitive myofascial trigger point (MTrP). The control group received MT plus SDN. Outcomes measures were: pain intensity (numeric pain rating scale, NPRS), pressure pain threshold (PPT), cervical range of motion (ROM) and neck disability (neck disability index, NDI).

RESULTS

This study found that between-group differences in pain intensity were statistically significant (P<0.01). Pain decreased after the first intervention in the DN+MT group (3.47±0.25 points on the NPRS) and even more so after the second intervention (4.76±0.24 points on the NPRS). After 4 weeks, pain intensity differed from baseline by 4.89±0.27 points on the NPRS. Statistically significant differences (P<0.001) in PPT were also found between the intervention group and the control group. After the first intervention, a significant increase in PPT within the DN+MT group (3.09±0.8 kg/cm²) was observed. Cervical ROM also showed highly statistically significant differences. After 4 weeks, a statistically significant reduction (P<0.001) in NDI was observed between the two groups.

CONCLUSION

Our results show that DN+MT is efficacious and significantly better than SDN+MT at reducing pain intensity, PPT, neck disability and cervical ROM in patients with chronic mechanical neck pain.

LEVEL OF EVIDENCE

1b.

Kinesio taping versus dry needling in the treatment of myofascial pain of the upper trapezius muscle: A randomized, single blind (evaluator), prospective study

BACKGROUND

Although a number of therapeutic interventions for trigger-point inactivation have been studied, it remains controversial which intervention is better.

OBJECTIVE

To compare the effectiveness of the kinesio taping and dry needling methods in patients with trigger-point related myofascial pain syndrome of the upper trapezius muscle.

METHODS

A total of 42 patients were randomly allocated to the kinesio taping group (n= 23) and dry needling group (n= 19). The patients were assessed for pain, pressure pain threshold (PPT), cervical range of motion (CROM), and function at baseline, at short- and medium-term stages after treatment. To investigate the effects of the interventions over time, two-way repeated measures analysis of variance (ANOVA) was used.

RESULTS

There was a significant improvement in pain intensity at rest and cervical motion, in the PPT readings (p< 0.05), in CROM (p< 0.05), and in function (p< 0.05) in both groups, with no superiority either (p> 0.05).

CONCLUSIONS

Kinesio taping may be a choice of trigger point inactivation in patients who do not want to be needled or who show contraindication(s) to treatments other than kinesio taping.

The effects of shock wave and dry needling on active trigger points of upper trapezius muscle in patients with non-specific neck pain: A randomized clinical trial

BACKGROUND

Chronic neck pain is associated with various myofascial trigger points (MTrPs).

OBJECTIVE

A single-blind randomized clinical trial was designed to compare the effects of extracorporeal shock wave therapy (ESWT) with dry needling (DN) techniques on the upper trapezius muscle trigger point in patients with non-specific neck pain (NSNP).

METHODS

Seventy patients with NSNP and active MTrPs of the upper trapezius muscle were randomly divided into two groups: an ESWT group (n= 35) and a DN group (n= 35). Treatment sessions were performed for three weeks and all participants received related intervention once a week. The outcome measures were pain intensity, measured by a numeric pain rating scale (NPRS), pain pressure threshold (PPT), measured with a digital algometer, and functional disability, evaluated by using the neck disability index (NDI).

RESULTS

NPRS and NDI were significantly decreased in the DN group and ESWT group (P< 0.05). Also, the PPT was significantly increased in the DN group and ESWT. However, there was no significant difference in pain intensity, NDI, and the PPT between the two groups (P⩾ 0.05).

CONCLUSION

Both ESWT and DN can be employed to treat MTrPs of the upper trapezius muscle in patients with NSNP.

Visceral Origin: An Underestimated Source of Neck Pain. A Systematic Scoping Review

The diagnosis of neck pain is challenging. Many visceral disorders are known to cause it, and clinical practice guidelines recommend to rule them out during neck pain diagnosis. However, the absence of suspicion of any cause impedes one from establishing that specific aetiology as the final diagnosis. To investigate the degree of consideration given to visceral aetiology, a systematic search of trials about neck pain was carried out to evaluate their selection criteria. The search yielded 309 eligible articles, which were screened by two independent reviewers. The PEDro scale score was used to assess the methodological quality of the studies. The following information was retrieved: number of authors affiliated to a clinical or non-clinical institution, number of citations in the Web of Science, study aims, characteristics of participants, and eligibility criteria. The top 15 most cited trials, and the 15 most recent studies about treatment efficacy in neck pain, published in first quartile journals of the Journal Citation Reports, were selected. Females represented 67.5% of participants. A single study was of poor methodological quality (4/10). Based on the eligibility criteria of the articles that were systematically reviewed, it would appear that visceral aetiology was not considered in eighty percent of the trials on neck pain, showing a low level of suspicion both in research and clinical settings.

Inhibition of chemokine CX3CL1 in spinal cord mediates the electroacupuncture-induced suppression of inflammatory pain

Purpose

Chemokine CX3CL1 and its receptor CX3CR1 in the lumbar spinal cord play crucial roles in pain processing. Electroacupuncture (EA) is recognized as an alternative therapy in pain treatment due to its efficacy and safety. However, the analgesic mechanism of EA remains unclear. The aim of this study was to investigate whether EA suppressed complete Freund’s adjuvant (CFA)-induced pain via modulating CX3CL1-CX3CR1 pathway.

Materials and methods

Inflammatory pain was induced by intraplantar injection of CFA to the left hind paw of Sprague-Dawley rats. EA with 2 Hz for 30 mins was given to bilateral Zusanli acupoints (ST36) on the first and third day after CFA injection. Mechanical allodynia and thermal hyperalgesia were tested with von Frey tests and Hargreaves tests, respectively. The expressions of CX3CL1, CX3CR1 and p38 mitogen-activated protein kinase (MAPK) were quantified with Western blots. The release of IL-1β, IL-6 and TNF-α were evaluated with ELISA. Recombinant CX3CL1 or control IgG were then injected through intrathecal catheters in the EA-treated CFA model rats. The behavioral tests, p38 MAPK activation and cytokine release were then evaluated.

Results

EA significantly inhibited inflammatory pain induced by CFA for 3 days. Meanwhile, EA downregulated the expression of CX3CL1 but not CX3CR1 in the lumbar spinal cord of the CFA rats. Besides, activation of p38 MAPK and the release of pain-related cytokines (IL-1β, IL-6 and TNF-α) were inhibited by EA. Intrathecal injection of CX3CL1 largely reversed the analgesic effect of EA treatment and re-activated p38 MAPK signaling, and resulted in pro-inflammatory cytokines increase in acupuncture-treated rats.

Conclusion

Our findings indicate that EA alleviates inflammatory pain via modulating CX3CL1 signaling in lumbar spinal cord, revealing a potential mechanism of anti-nociception of EA in inflammatory pain.

[Efficacy of dry needling in neck pain compared with other physiotherapy techniques: A systematic review]

OBJECTIVE

To determine the efficacy of dry needling (DN) in the treatment of myofascial trigger points (MTrP) compared to other methods of physical therapy in the treatment of neck pain.

METHOD

A systematic search was carried out in the MEDLINE Complete (EBSCO), Pubmed, PEDro and Scopus databases. The quality of the studies was assessed using the standard of biases of the Cochrane Collaboration.

RESULTS

Eleven articles met the eligibility criteria. The characteristics of the participants and the results of the comparison of the application of DN with ultrasound, TENS, manual therapy techniques (passive stretching, strain-counterstrain, ischaemic pressure) and kinesiotape bandage are described.

CONCLUSION

DN was a useful technique in reducing neck pain. However, its efficacy in the treatment of cervicalgia could not be determined in comparison with other physiotherapy approaches.

Comparison of radial shockwave and dry needling therapies in the treatment of myofascial pain syndrome

Background/Aims

Myofascial pain syndrome is a frequent problem in the musculoskeletal system. As a method of treatment for myofascial pain syndrome, dry needling therapy is an effective and convenient treatment for patients because they do not need to be treated every day. However, as patients often have post-needle soreness or some patients are afraid of needles, there are limitations to this treatment. The purpose of this study is to compare the effectiveness of radial shockwave therapy with dry needling therapy to treat myofascial pain.

Methods

A total of 42 patients attending the rehabilitation department with at least one myofascial pain trigger point in their upper back muscles, were randomly assigned to receive radial shockwave therapy or dry needling therapy. Treatment was performed once a week for 3 weeks in both groups. Participants' pain pressure threshold, measured using an algometer, and pain levels, measured using a numeric pain scale, were assessed before the designated treatment was applied each week. Each patient also performed upper trapezius, rhomboid and infraspinatus muscle stretches twice a day throughout the study period.

Results

There was no difference in pain pressure threshold at the three trigger points before treatment with the different modalities commenced. At the end of the study, the radial shockwave therapy group had a significant improvement in trapezius pain pressure threshold, increasing from 11.7 at baseline to 14.8 at the end of study. There was no significant between-group difference in pain level (P=3.4 vs P=2.6) at the end of the study. Both treatments significantly reduced pain levels: from 7.2 to 3.4 in the radial shockwave group (P<0.001) and from 6.8 to 2.6 in the dry needling therapy group (P<0.001).

Conclusions

Dry needling and radial shock wave therapies are effective in reducing myofascial pain syndrome originating in the upper back muscles. Participants' pain pressure threshold increased after 3 weeks of treatment with both therapies. Radial shock therapy can be used as an alternative to dry needling in the treatment of myofascial pain syndrome in patients who have trouble attending daily physical therapy or in whom dry needling therapy is contraindicated.

Acupuncture for chronic neck pain with sensitive points: study protocol for a multicentre randomised controlled trial

INTRODUCTION

Chronic neck pain is a challenging condition to treat in clinical practice and has a considerable impact on quality of life and disability. According to the theory of traditional Chinese medicine, acupoints and tender points may become sensitised when the body is in a diseased state. Stimulation of such sensitive points may lead to disease improvement and improved clinical efficacy. This study aims to evaluate the efficacy and safety of needling at sensitive acupoints in providing pain relief, improvement of cervical vertebral function and quality of life in patients with chronic neck pain.

METHODS AND ANALYSIS

This multicentre, randomised controlled, explanatory and parallel clinical trial will include 716 patients with chronic neck pain. Study participants will be randomly assigned in a 1:1:1:1 ratio to four treatment groups: the highly sensitive acupoints group, low/non-sensitive acupoints group, sham acupuncture group and waiting-list control group. The primary outcome will be the change in the visual analogue scale score for neck pain from baseline to 4 weeks. Secondary outcomes will be the Northwick Park Neck Pain Questionnaire and McGill pain questionnaire, 12-item Short-Form health survey, Neck Disability Index, changes in the pressure pain threshold, range of cervical motion, Self-Rating Anxiety Scale, Self-Rating Depression Scale and adverse events before treatment, post-treatment, and at 4, 8, 12, 16 and 20 weeks post-treatment. The intention-to-treat approach will be used in the statistical analysis. Group comparisons will be undertaken using χ2 tests for categorical characteristics, and analysis of variance for continuous variables to analyse whether acupuncture in the highly sensitive acupoints group achieves better treatment outcomes than in each of the other three groups.

ETHICS AND DISSEMINATION

Ethical approval of this study has been granted by the local Institutional Review Board (ID: 2017 KL-038). The outcomes of the trial will be disseminated through peer-reviewed publications.

TRIAL REGISTRATION NUMBER

ChiCTR1800016371; Pre-results.

The Effects of Needling Therapies on Muscle Force Production: A Systematic Review and Meta-analysis

BACKGROUND

Needling has been shown to decrease pain in the short term; however, its effects on muscle force production are unclear.

OBJECTIVE

To evaluate the evidence regarding the comparative effects of needling on muscle force production.

METHODS

In this systematic review, an electronic search was performed using key words related to needling. Methodological quality of articles was appraised and effect sizes were calculated. The strength of evidence was determined, and meta-analysis was performed when similar methods were used in studies for similar conditions.

RESULTS

Twenty-one studies were included in this review, of which 9 were deemed to be of high quality (greater than 6/10 on the Physiotherapy Evidence Database [PEDro] scale), 11 of fair quality (5 to 6/10), and 1 of poor quality (less than 5/10). Three meta-analyses were performed. There was moderate strength of evidence and medium effect sizes for needling therapy to enhance force production in those with neck pain, and very low strength of evidence of no effect for individuals with nonspecific and postoperative shoulder pain and those with lateral epicondylalgia. Other studies not included in the 3 meta-analyses demonstrated no significant effect of needling on force production. These studies included individuals with carpal tunnel syndrome, knee osteoarthritis, ankle sprains, knee arthroscopy, or delayed-onset muscle soreness.

CONCLUSION

The majority of studies suggest no effect of dry needling on force production. High-quality studies with adequate power that control for the placebo effect and follow accepted reporting standards could make valuable contributions to the literature. This study was registered with the International Prospective Register of Systematic Reviews (PROSPERO, CRD42017080318).

LEVEL OF EVIDENCE

Therapy, level 1a. J Orthop Sports Phys Ther 2019;49(3):154-170. Epub 30 Nov 2018. doi:10.2519/jospt.2019.8270.

Proteins and Signaling Pathways Response to Dry Needling Combined with Static Stretching Treatment for Chronic Myofascial Pain in a RAT Model: An Explorative Proteomic Study

A quantitative proteomic analysis of the response to dry needling combined with static stretching treatment was performed in a rat model of active myofascial trigger points (MTrPs). 36 rats were divided into a model group (MG), a stretching group (SG) and a dry needling combined with stretching group (SDG). We performed three biological replicates to compare large-scale differential protein expression between groups by tandem mass tag (TMT) labeling technology based on nanoscale liquid chromatography mass spectrometry analysis (LC–MS/MS). Hierarchical clustering, Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment and protein-protein interaction network analyses were performed for the general characterization of overall enriched proteins. For validation of the results of TMT, the candidate proteins were verified by parallel reaction monitoring (PRM) analysis. 285 differentially expressed proteins between groups were identified and quantified. Tight junction pathway played a dominant role in dry needling combined with static stretching treatment for the rat model of active MTrPs. Three candidate proteins, namely actinin alpha 3, calsequestrin-1 and parvalbumin alpha, were further validated, consistent with the results of LC–MS/MS. This is the first proteomics-based study to report the therapeutic mechanism underlying dry needling and static stretching treatment for MTrPs. Further functional verification of the potential signaling pathways and the enriched proteins is warranted.

Health related quality of life improvement in chronic non-specific neck pain: secondary analysis from a single blinded, randomized clinical trial

BACKGROUND

Chronic non-specific neck pain is related to limited cervical mobility, impaired function, neck muscles myofascial pain syndrome, and stress at work. The aforementioned factors are strongly related and may lead to a negative impact on health-related quality of life. There are some effective conservative Physical therapy interventions for treating chronic non-specific neck pain. Currently, Deep Dry Needling is emerging as an alternative for improving symptoms and consequently, the quality of life in patients with chronic non-specific neck pain. The purpose of the study was to examine the effectiveness of Deep Dry Needling of myofascial trigger points on health-related quality of life improvement, as a secondary analysis, in people with chronic non-specific neck pain.

METHODS

A randomized parallel-group blinded controlled clinical trial was conducted at a public Primary Health Care Centre in Madrid, Spain, from January 2011 to September 2014. One hundred thirty subjects with chronic non-specific neck pain and active myofascial trigger points in neck muscles were randomly allocated into two groups. Subjects in the intervention group (n = 65) were treated with Deep Dry Needling in active myofascial trigger points plus stretching in neck muscles; Control group (n = 65) received only stretching. Both interventions lasted 2 weeks, 2 sessions per week. Health-related quality of life was measured with Short Form-36 (SF-36), in 5 assessments: at baseline, after intervention period; and at 1, 3 and 6 months after intervention.

RESULTS

For both groups, SF-36 mean values increased in all dimensions in every assessment. Significant differences (p < 0.05) were found in favor of the intervention group for all dimensions at the last assessment. For some dimensions (physical function, physical role, social function and vitality), the evidence was more consistent from the beginning.

CONCLUSIONS

Deep Dry Needling plus stretching is more effective than stretching alone for Health-related quality of life improvement, especially for physical function, physical role, social function and vitality dimensions, in people with non-specific neck pain.

TRIAL REGISTRATION

Current Controlled Trials ISRCTN22726482 . Registered 9 October 2011.

Higher Incidence of Sleep Disturbance among Survivors with Musculoskeletal Pain after the Great East Japan Earthquake: A Prospective Study

Sleep disturbance is a common symptom after natural disasters. Although musculoskeletal pain also increases after natural disasters, its relation to sleep disturbance is not clear. The purpose of this study was to determine the influence of musculoskeletal pain on new-onset sleep disturbance among survivors after the Great East Japan Earthquake (GEJE). A prospective cohort study was conducted with the survivors of the GEJE at two and three years after the earthquake. New-onset sleep disturbance was defined as sleep disturbance absent at two years and present at three years after the earthquake. The sites of musculoskeletal pain included low back, shoulder, knee, and hand or foot. The number of musculoskeletal pain sites at two years after the earthquake was divided into three categories (0, 1, and 2 or more). Univariate and multivariate logistic regression models were used to calculate the odds ratio (OR) and 95% confidence interval (95%CI) for new-onset sleep disturbance according to the number of musculoskeletal pain sites. A total of 1,102 survivors were included in this study and 14.6% of the participants reported new-onset sleep disturbance. Using "0" as a reference, the adjusted ORs (95% CI) for new-onset sleep disturbance were 2.43 (1.55-3.80) in "1" and 2.96 (1.88-4.64) in "2 or more", respectively (P for trends < 0.001). In conclusion, this is the first study showing higher incidence of sleep disturbance among survivors with musculoskeletal pain after the GEJE. Care for musculoskeletal pain is important to prevent sleep disturbance after natural disasters.

Musculoskeletal Pain is Associated With New-Onset Psychological Distress in Survivors of the Great East Japan Earthquake

OBJECTIVE

Psychological distress is a common symptom after natural disasters. Although musculoskeletal pain also increases after natural disasters, its relation to psychological distress is not known. This study aimed to examine the association of musculoskeletal pain with new-onset psychological distress among survivors of the Great East Japan Earthquake.

METHODS

A panel study was conducted with survivors at 2 and 3 years after the Great East Japan Earthquake. New-onset psychological distress was defined as psychological distress absent at 2 years and present at 3 years after the disaster. The number of musculoskeletal pain sites at 2 years after the disaster was divided into 3 categories (0, 1, and ≥2). Multivariate logistic regression models were used to calculate the odds ratio and 95% confidence interval for new-onset psychological distress according to the number of musculoskeletal pain sites.

RESULTS

The rate of new-onset psychological distress was 6.7%. Musculoskeletal pain was associated with new-onset psychological distress. Using "0" as a reference, the adjusted odds ratios (95% confidence interval) were 1.65 (0.92-2.95) in "1" and 2.12 (1.24-3.64) in "≥2" (P for trend=.02).

CONCLUSIONS

Musculoskeletal pain is associated with new-onset psychological distress among survivors of the Great East Japan Earthquake. (Disaster Med Public Health Preparedness. 2019;13:295-300).

Postneedling Soreness and Tenderness After Different Dosages of Dry Needling of an Active Myofascial Trigger Point in Patients With Neck Pain: A Randomized Controlled Trial

BACKGROUND

Previous studies in asymptomatic subjects have demonstrated that myofascial trigger point (MTrP) dry needling frequently is associated with postneedling soreness. However, to the authors' knowledge, there is not any study that performs a detailed description of postneedling soreness characteristics in patients with myofascial pain. This information could help clinicians to make evidence-informed decisions considering the benefits and negative effects of different dry needling dosages.

OBJECTIVE

To (1) compare the prevalence, intensity, and duration of postneedling soreness and tenderness after different dosages of deep dry needling (DDN) and (2) analyze the influence on postneedling soreness of psychological factors and other factors involved in the DDN process DESIGN: 1-week follow-up, double-blind randomized controlled trial.

SETTING

University community.

PARTICIPANTS

Patients (n = 120: 34 male; 86 female) aged 18-53 years (median ± interquartile range, 21.0 ± 7.0 years) with active MTrPs in the upper trapezius.

INTERVENTION

All patients received DDN in an active MTrP. They were randomly divided into 4 groups: no local twitch responses (LTRs) elicited (control group), 4 LTRs elicited, 6 LTRs elicited, and DDN until no more LTRs were elicited.

MAIN OUTCOME MEASURES

Postneedling soreness and pressure pain threshold were assessed before treatment, during DDN procedure, and every 24 hours during 1 week.

RESULTS

Postneedling soreness showed a significant effect for time (F_2,006 = 173.603; P < .001, η_p² = 0.659) and a significant interaction between group and time (F_6,017 = 3.763; P = .001; η_p² = 0.111). Pressure pain threshold showed a significant effect for time (F_2,377 = 16.833; P < .001; η_p² = 0.127) and a significant interaction between group and time (F_7,130 = 2.100; P = .04; η_p² = 0.052). Psychological factors did not show relevant correlations with the intensity of postneedling soreness.

CONCLUSIONS

Postneedling soreness is present in most of subjects after DDN of active MTrPs. The groups in which DDN was performed eliciting LTRs exhibited greater post-needling soreness. The number of needle insertions was associated with postneedling soreness but psychological factors did not seem to play a relevant role on its perception.

CLINICAL TRIAL REGISTRATION NUMBER

NCT02190890 LEVEL OF EVIDENCE: I.

Acupuncture for chronic pain: an update and critical overview

PURPOSE OF REVIEW

Acupuncture is now recommended for several chronic pain conditions. Despite supportive evidence of its effectiveness, this ancient approach is often misunderstood, and may still be underused in mainstream practice. A critical review on its effectiveness and practice integration, and mechanisms of action is essential to the medical community that is continuing to seek nonopioid therapies for chronic pain.

RECENT FINDINGS

Mounting evidence supports the effectiveness of acupuncture to treat chronic low back, neck, shoulder, and knee pain, as well as headaches. Additional data are emerging that support the use of acupuncture as an adjunct or alternative to opioids, and in perioperative settings. Findings related to its mechanisms of action include transient receptor potential cation channel vanilloid 1 activation in the periphery, microglial suppression in the cerebral cortex and spinal cord, and regulation of cytokines and other key inflammatory factors in the spinal cord. Incremental integration of acupuncture into pain medicine practices and training programmes continues to grow.

SUMMARY

Acupuncture is effective, safe, and cost-effective for treating several chronic pain conditions when performed by well-trained healthcare professionals. Further studies on its use as an adjunct or alternative to opioids, and in perioperative settings are needed.

The role of nonpharmacologic therapies in management of chronic pelvic pain: what to do when surgery fails

PURPOSE OF REVIEW

To provide an update on nonsurgical and nonpharmacologic strategies for the management of chronic pelvic pain (CPP).

RECENT FINDINGS

Effective treatment of patients with CPP requires a multifaceted approach, with thoughtful consideration of surgical, pharmacologic, and nonpharmacologic strategies. Evidence for physical therapy and trigger point injections for treatment of myofascial components of CPP is increasing. Neuromodulation techniques, such as percutaneous tibial nerve stimulation and transcutaneous electrical stimulation, have limited but favorable preliminary data in patients with CPP. Behavioral strategies, such as exercise, cognitive behavioral therapy, and mindfulness, have demonstrated significant improvements in pain, function and quality of life in patients with a variety of chronic pain conditions and are promising avenues for future research in CPP.

SUMMARY

Nonpharmacologic therapies are important adjuncts to surgical and pharmacologic treatment for CPP and should be considered integral to a comprehensive treatment approach.

The effects of dry needling and radial extracorporeal shockwave therapy on latent trigger point sensitivity in the quadriceps: A randomised control pilot study

OBJECTIVES

Latent myofascial trigger points (TrP) can alter joint kinematics, reduce strength and alter activation patterns, affecting athletic performance. TrP sensitivity can be measured with the pressure pain threshold (PPT). Dry needling (DN) has been used to treat latent TrPs, but may cause post-needling soreness. Radial extracorporeal shockwave therapy (rESWT) could be used as an alternative to DN during heavy training or competition.

METHODS

After baseline measures, 21 recreational athletes were split into three groups: DN, rESWT or control group, and were treated for three sessions in one week. Follow-up outcome sessions were conducted two to four and seven days after the last treatment. TrP sensitivity was measured using the PPT.

RESULTS

There was a groupXtime interaction for the PPT (p < 0.05). After a decrease in PPT during treating, there was a significant increase (p < 0.05) in PPT for the DN group (12.92%). The rESWT group also significantly (p < 0.05) increased (13.26%), but did not show any post-treatment soreness during the treatment phase. There was no difference in the PPT in the control group during any session.

CONCLUSION

DN is effective for increasing PPT of latent TrPs, but can be associated with post-treatment soreness. rESWT is as effective, but without the post-treatment soreness. Future studies should include treating multiple TrPs in the lower kinetic chain as well as measuring muscle activation and joint function. Furthermore, consideration for the current training load and up-coming competition is needed. Optimum timing and longer follow-up periods of such interventions should be explored.

LEVEL OF EVIDENCE

2b.

SUMMARY

Treating latent TrPs in the lower kinetic chain may improve muscle activation. Unlike DN, rESWT does not cause post- treatment soreness. Consideration of training load and up-coming competition is needed to deliver the optimum treatment strategy for athletes with latent TrPs.

Post-needling soreness after myofascial trigger point dry needling: Current status and future research

Post-dry needling soreness is a common complication of myofascial trigger point (MTrP) dry needling treatment. The prevention, management and relevance of this complication remain uncertain. This paper examines the current state of knowledge and suggests directions for further studies in this area. MTrPs are hypersensitive nodules in skeletal muscles' taut bands, present in several pain conditions. Dry needling has been recommended for relieving MTrP pain. MTrP dry needling procedures have shown to be associated with post-needling soreness, which is thought to be a consequence of the neuromuscular damage, and hemorrhagic and inflammatory reaction generated by the needle. Postneedling soreness is a very frequent effect after deep dry needling, usually lasting less than 72 h. It may not be especially distressing for most patients. However, patients presenting with higher levels of post-needling soreness, not perceiving dry needling effectiveness in the first session, or not having high myofascial pain intensity before treatment, could be the most likely to find post-needling soreness more distressing, functionally limiting and to abandon treatment. Future research should assess the clinical relevance of post-needling soreness. Post-needling soreness should be considered when investigating dry needling effectiveness since it could overlie the original myofascial pain and influence the patients' pain ratings.

Dry Needling for Patients With Neck Pain: Protocol of a Randomized Clinical Trial

BACKGROUND

Neck pain is a costly and common problem. Current treatments are not adequately effective for a large proportion of patients who continue to experience recurrent pain. Therefore, new treatment strategies should be investigated in an attempt to reduce the disability and high costs associated with neck pain. Dry needling is a technique in which a fine needle is used to penetrate the skin, subcutaneous tissues, and muscle with the intent to mechanically disrupt tissue without the use of an anesthetic. Dry needling is emerging as a treatment modality that is widely used clinically to address a variety of musculoskeletal conditions. Recent studies of dry needling in mechanical neck pain suggest potential benefits, but do not utilize methods typical to clinical practice and lack long-term follow-up. Therefore, a clinical trial with realistic treatment time frames and methods consistent with clinical practice is needed to examine the effectiveness of dry needling on reducing pain and enhancing function in patients presenting to physical therapy with mechanical neck pain.

OBJECTIVE

The aim of this trial will be to examine the short- and long-term effectiveness of dry needling delivered by a physical therapist on pain, disability, and patient-perceived improvements in patients with mechanical neck pain.

METHODS

We will conduct a randomized, double-blind, placebo-controlled trial in accordance with the CONSORT guidelines. A total of 76 patients over the age of 18 with acute or chronic mechanical neck pain resulting from postural dysfunction, trauma, or insidious onset who are referred to physical therapy will be enrolled after meeting the eligibility criteria. Subjects will be excluded if they have previous history of surgery, whiplash in the last 6 weeks, nerve root compression, red flags, or contraindications to dry needling or manual therapy. Participants will be randomized to receive (1) dry needling, manual therapy, and exercise or (2) sham dry needling, manual therapy, and exercise. Participants will receive seven physical therapy treatments lasting 45 minutes each over a maximum of 4 weeks. The primary outcome will be disability as measured by the Neck Disability Index. Secondary outcomes include the following: pain, patient-perceived improvement, patient expectations, and successful blinding to the needling intervention. Outcome measures will be assessed at 4 weeks, 6 months, and 12 months by an assessor who is blind to the group allocation of the participants to determine the short- and long-term treatment effects. We will examine the primary aim with a two-way, repeated-measures analysis of variance with treatment group as the between-subjects variable and time as the within-subjects variable. The hypothesis of interest will be the two-way group by time interaction. An a priori alpha level of .05 will be used for all analyses.

RESULTS

Recruitment is currently underway and is expected to be completed by the end of 2017. Data collection for long-term outcomes will occur throughout 2017 and 2018. Data analysis, preparation, and publication submission is expected to occur throughout the final three quarters of 2018.

CONCLUSIONS

The successful completion of this trial will provide evidence to demonstrate whether dry needling is effective for the management of mechanical neck pain when used in a combined treatment approach, as is the common clinical practice.

TRIAL REGISTRATION

ClinicalTrials.gov NCT02731014; https://clinicaltrials.gov/ct2/show/NCT02731014 (Archived by WebCite at http://www.webcitation.org/6ujZgbhsq).

The local twitch response during trigger point dry needling: Is it necessary for successful outcomes?

BACKGROUND

Myofascial trigger point (MTrP) injection and trigger point dry needling (TrPDN) are widely accepted therapies for myofascial pain syndrome (MPS). Empirical evidence suggests eliciting a local twitch response (LTR) during needling is essential.

OBJECTIVE

This is the first review exploring the available literature, regardless of study design, on the neurophysiological effects and clinical significance of the LTR as it relates to reductions in pain and disability secondary to MTrP needling.

METHODS

PubMed, MEDLINE, Science Direct and Google Scholar were searched up until October 2016 using terms related to trigger point needling and the LTR.

RESULTS

and Discussion: Several studies show that eliciting a LTR does not correlate with changes in pain and disability, and multiple systematic reviews have failed to conclude whether the LTR is relevant to the outcome of TrPDN. Post needling soreness is consistently reported in studies using repeated in and out needling to elicit LTRs and increases in proportion to the number of needle insertions. In contrast, needle winding without LTRs to MTrPs and connective tissue is well supported in the literature, as it is linked to anti-nociception and factors related to tissue repair and remodeling. Additionally, the positive biochemical changes in the MTrP after needling may simply be a wash out effect related to local vasodilation. While the LTR during TrPDN appears unnecessary for managing myofascial pain and unrelated to many of the positive effects of TrPDN, further investigation is required.