The Burden and Determinants of Neck Pain in the General Population: Results of the Bone and Joint Decade 2000–2010 Task Force on Neck Pain and Its Associated Disorders

The impact of subclinical neck pain and laterality on vertical goal directed upper limb movements

Subclinical neck pain (SCNP) is a subset of the recurrent neck pain population for which individuals have not received treatment. Individuals with SCNP have been shown to have altered cerebellar processing. The cerebellum integrates sensorimotor information to refine and update internal models necessary for reaching movements. The impact of SCNP on sensorimotor integration and motor behavior has not been fully elucidated in the context of goal-directed reaching movements. Therefore, our study investigated the role of SCNP on these processes by comparing upper limb reaching movements to controls with the dominant and non-dominant hands using light and heavy styli in the vertical plane. The results show that those with SCNP have quicker reaction times and end their primary movement closer to the target compared to controls. This is likely to allow for greater central visual processing, thus illustrating the tendency for those with SCNP to rely more on visual feedback in order to compensate for an altered body schema.

Epidemiology of Work-Related Neck Pain Among Spine Surgeons

STUDY DESIGN

Cross-sectional survey.

OBJECTIVES

This study aimed to investigate work-related neck pain among AO spine surgeons in different regions by estimating its prevalence, predictors, consequences, and management methods.

METHODS

A cross-sectional survey of 411 spine surgeon members of AO spine was conducted during March-May 2021, using the Modified Nordic Questionnaire and the Neck Disability Index. Data on neck pain experience during the last 12 months and its consequences and risk factors were collected. Logistic regression analysis was done to identify significant predictors of neck pain. Significance was set at P < .05.

RESULTS

The 1-year neck pain was experienced by 66.7% of surgeons. According to the Neck Disability Index, more than one-half (52.8%) experienced disability due to neck pain of mild (45.5%), moderate (6.5%), and severe (.8%) grades. Neck pain was responsible for stopping work in 17.5% of surgeons, with a median of 3.5 (IQR, 2-7.8) days off work. One-half of the participants (56.3%) were treated by medical care, 31.5% by physiotherapy, and 16.5% requested rest days and sick leave. Physical stress (P < .001) and non-exercising (P = .04) were the significant predictors of neck pain.

CONCLUSION

The 12-month prevalence of neck pain was high among spine surgeons, with an impact on activities of daily living, mainly of a mild degree, reported by one-half of surgeons. Physical stress was the only significant predictor, while sports practice was a protective factor against neck pain. Medication was the primary management adopted-an increased focus on pain prevention through improved workplace ergonomics and sports activity programs is recommended.

Occupational exposure to whole-body vibration and neck pain in the Swedish general population

The primary aim of this study was to determine if occupational exposure to whole-body vibration (WBV) was associated with reporting neck pain. A cross-sectional study was conducted on a sample of the general population living in northern Sweden, aged 24-76 years. Data was retrieved through a digital survey that collected subjectively reported information on exposure to WBV and biomechanical exposures as well as neck pain. The study included 5,017 participants (response rate 44%). Neck pain was reported by 269 men (11.8%) and 536 women (20.2%). There was a statistically significant association between reporting occupational exposure to WBV half the time or more (adjusted OR 1.91; 95% CI 1.22-3.00) and reporting neck pain. In gender-stratified analyses, the same pattern was observed in men, while there were too few women to determine any association. We conclude that occupational exposure to whole-body vibration was associated with neck pain in men.Practitioner summary: This cross-sectional, survey-based study investigated associations between self-reported occupational whole-body vibration and neck pain. It showed significant associations between frequent exposure to whole-body vibration and neck pain among men but not women. In occupational health care settings, whole-body vibration could be considered as a possible risk factor for neck pain.

Comparison of head posture and neck proprioceptive sense of individuals with chronic neck pain and healthy controls: A cross-sectional study

BACKGROUND

Chronic pain can affect body perception at the central level by causing the somatosensory cortex to rearrange. Additionally, cervical afferent abnormalities in individuals with neck pain can impair proprioceptive sensitivity, potentially leading to alterations in body alignment and biomechanics. Nevertheless, there are insufficient studies exploring these notions.

OBJECTIVE

The main objective of this study was to compare the head posture and neck proprioceptive sense of individuals with chronic neck pain and healthy controls.

METHODS

Utilizing a cross-sectional study, a total of 76 volunteers comprising 38 individuals with neck pain and 38 matched healthy controls participated in the study. Head posture and cervical joint position sense were measured using a Cervical Range of Motion Deluxe (CROM) device. Firstly, the deviation angles of the head in three planes were evaluated, then the Head Repositioning Accuracy (HRA) test was performed to determine the joint position error. Visual Analogue Scale (VAS) was used to determine the severity of pain in individuals with neck pain.

RESULTS

The deviation angles of the head in all three planes were significantly lower in the healthy control group (p< 0.05). Joint position error values were significantly higher in all directions (flexion-extension, right-left lateral flexion, and rotation) in the neck pain group (p< 0.001).

CONCLUSION

The findings show that the proprioceptive sensation of the cervical region in individuals with neck pain was adversely affected, with changes were observed in the head posture.

NOTE

The abstract of this study was presented as a verbal declaration at the International Congress of Health Sciences-ICHES-IDU 2020 that was held in İzmir on 20-21 June 2020.

The effect of exercise and education combination via telerehabilitation in patients with chronic neck pain: A randomized controlled trial

BACKGROUND

A limited number of studies have investigated the effect of telerehabilitation in individuals with chronic neck pain (CNP).

OBJECTIVE

The study aimed to evaluate the effectiveness of holistic exercise and education combination via telerehabilitation on pain, disability, kinesiophobia, exercise adherence, quality of life and patient satisfaction in individuals with CNP.

METHODS

A two-armed, randomized controlled study was conducted with 40 participants with CNP. Patients were randomized into two groups: Telerehabilitation (TR) (n = 20) and Standard Rehabilitation (SR) (n = 20). The TR group was provided with exercise and education videos online. The same protocol was given to the SR group in the clinical setting. Patients were evaluated at baseline and after eight weeks of intervention. Satisfaction and usability levels of the TR group were assessed at week 8.

RESULTS

TR group demonstrated better improvement in function, quality of life (including bodily pain, general health, social function), kinesiophobia and exercise adherence. The TR group was not superior to the SR group in pain and other quality-of-life subscores. A vast majority of the TR group had high satisfaction and usability.

CONCLUSION

Comprehensive rehabilitation via TR increases satisfaction and participation in patients with CNP. Besides, TR provides more positive effects on function and kinesiophobia. Further studies should focus on the impact of telerehabilitation on pain and quality of life in CNP with a long-term follow-up.

The burden of neck pain in the Middle East and North Africa region, 1990-2019

Background

Neck pain is a common cause of disability across the world. The objective of the present study was to present a thorough investigation of the burden caused by neck pain in the Middle East and North Africa (MENA) region, by country, sex, age group and socio-demographic index (SDI).

Methods

The data on the burden of neck pain, encompassing its prevalence, incidence and years lived with disability (YLDs), were extracted from the Global Burden of Disease (GBD) 2019 study. These findings are reported as age-standardised numbers and rates (per 100,000), accompanied by 95 % uncertainty intervals (UIs).

Results

The age-standardised point prevalence of neck pain in 2019 was 3066.7 (95 % UI: 2407.8 to 3894.3) per 100,000, with an age-standardised incidence rate of 649.2 (509.2-829.2) in the MENA region, neither of which have changed since 1990. The age-standardised YLD rate of neck pain was 303.0 (201.5-438.8) per 100,000 population in 2019. The highest YLD rate of neck pain was found in Iran [423.5 (280.3-609.8)] and the lowest in Kuwait [215.0 (141.0-314.1)]. The highest number of prevalent cases were seen in the 45-49 age-group for both sexes in 2019, but overall females had a higher point prevalence than males. Furthermore, over the study period (1990-2019) there was no clear and consistent relationship between the SDI and the burden of neck pain.

Conclusion

Although the burden of neck pain has largely remained stable over the past three decades, the prevalence and morbidity in the MENA region remains high. Preventive and rehabilitative programs should be implemented that firstly target middle-aged females and males.

Breastfeeding-related neck pain: prevalence and correlates among Nigerian lactating mothers

BACKGROUND

Breastfeeding (BF) is a physically demanding task and is predominantly performed in a head-down position as the mother attempts to maintain eye contact with the infant. There are possibilities of BF-related neck pain (BFRNP) that have not been widely studied. This study investigated the prevalence and correlates of BFRNP in Nigerian lactating mothers.

METHODS

A cross-sectional descriptive survey was conducted among 310 lactating mothers selected from post-natal clinics in Enugu, Nigeria. Information on their BF profile was sought as well as the prevalence and characteristics of BFRNP using a self-structured questionnaire.

RESULTS

It was found that cradle hold was the commonly adopted BF position (94.0%) and the majority breastfed ≥10 times daily (55.2%) for <30 min per session (49.1%). BFRNP was seen in 51.7% of women, of which 55.0% reported moderate pain intensity and 60.0% experienced this pain during BF. None of the maternal characteristics and breastfeeding profiles were significantly associated with the prevalence of BFRNP (p>0.05).

CONCLUSIONS

There is a high prevalence of BFRNP among nursing mothers. Although maternal characteristics and BF positions were not associated with reported BFRNP, the results suggest that changing BF positions reduces neck pain during nursing sessions. Therefore this study recommends that nursing mothers should regularly change their BF positions to increase relaxation and comfort.

The efficacy of sling exercise combined with extracorporeal shock wave on office workers with chronic neck pain

This study aimed to investigate the effect of extracorporeal shockwave therapy on the anterior surface line of the fascia meridian, including the oblique muscle, combined with sling exercise, on the stability of the spine in the neck disability index (NDI), neck joint range of motion (ROM), craniovertebral angle, neck alignment, and posture control. A total of 20 office workers with chronic neck pain were randomly assigned to an experimental group that combined extracorporeal shock wave therapy and sling exercise (n = 10) and a control group (CG) consisting of sling exercise (n = 10) performed twice weekly for 4 weeks. All subjects were evaluated using the NDI, ROM, neck alignment, and spine stability tests. Following the intervention, there were significant differences in the For example, NDI, craniovertebral angle, Cobb's angle, Centaur data, and ROM. Except for Cobb's angle and Centaur data (-90 degrees), all variables showed significant differences in the CG. Comparing changes before and after the intervention, The For example, showed significantly more significant changes in all variables than the CG. The combination of extracorporeal shockwave therapy and sling exercises improved NDI, ROM, and neck and spine alignment in office workers with chronic neck pain more effectively than the sling exercise alone. This study could be recommended as a new approach to enable individuals with chronic neck pain to perform better.

Improving Adherence to a Home Rehabilitation Plan for Chronic Neck Pain through Immersive Virtual Reality: A Case Report

Idiopathic chronic neck pain is a highly disabling musculoskeletal condition. Immersive virtual reality shows a promising efficacy in the treatment of chronic cervical pain through the mechanism of distraction from the pain. This case report describes the management of C.F., a fifty-seven-year-old woman, who suffered from neck pain for fifteen months. She had already undergone a cycle of physiotherapy treatments including education, manual therapy, and exercises, following international guidelines. The patient's poor compliance did not allow adherence to the exercise's prescription. Home exercise training through virtual reality was therefore proposed to the patient to improve her adherence to the treatment plan. The personalization of the treatment allowed the patient to resolve in a short time period her problem and return to live with her family peacefully.

High-dose cervical mobilization to improve central sensitization for a patient with post-fusion neck pain

BACKGROUND

Few studies have addressed the appropriate joint mobilization dosage for neck pain. Furthermore, the efficacy of manual therapy in patients with post-spinal fusion neck pain is unreported.

CASE DESCRIPTION

A 63-year-old man with a 2-year history of unresolved neck pain post-cervical fusion presented to therapy with an exacerbation of neck and left-shoulder pain. The patient presented with cervical impairments of intervertebral hypo-mobility above and below the fusion site. He exhibited a high Numeric Pain Rating Scale (NPRS) score of 8/10 related to his neck pain. Additionally, he demonstrated marked loss of cervical mobility. Indicators of central sensitization were present, including both hyperalgesia and allodynia. High-dose cervical joint mobilization was applied for durations of up to 10 minutes. Corrective exercises were added to improve muscle strength and endurance. Treatment was applied for 12 sessions over 4 months.

OUTCOMES

At the time of discharge, this patient reported a full recovery of neck function. This treatment reduced pain, improved passive joint accessory motion, and restored upper quarter function. The patient demonstrated a 33-point improvement in his Neck Disability Index (NDI) score and his pain was reduced to 0-1/10 on the NPRS. Markers of central sensitization were resolved. Intervertebral passive accessory joint mobility was pain free in addition to concurrent restoration of functional mobility.

CONCLUSION

A paucity of evidence exists for appropriate dosage with manual therapy interventions. This case report demonstrates marked improvement of pain and function with the use of high-dose joint mobilization. Improved cervical accessory joint mobility and central pain modulation were achieved with high-dose joint mobilization.

Virtual reality and motor control exercises to treat chronic neck pain: A randomized controlled trial

AIM

To compare the effects of virtual reality (VR) and motor control (MC) exercises.

METHODS

Forty-one participants with chronic neck pain (CNP) were randomized into the VR or MC group. Both groups performed 18 sessions over 6 weeks. The primary outcomes were pain intensity (visual analogue scale), pain pressure thresholds (PPTs), joint position sense error (JPSE), and muscle performance. The secondary outcomes were the Profile Fitness Mapping Questionnaire (ProFitMap-Neck), Hospital Anxiety-Depression Scale (HADS), and quality of life (SF-36). Data were analysed using T-Tests, and Fisher's Exact Test. Mean (standard deviation), median (interquartile range), effect size and %95 confidence interval (CI) were reported.

RESULTS

The results of Independent T-Tests showed that VR was advantageous in terms of PPTs of the C1/C2 and C5/C6 articular pillar bilaterally and large effect size (Cohen's d > 0.8, p < 0.05). Moreover, VR was more effective in decreasing JPSE (Cohen's d > 0.08; mean difference changes between -2.91 and -1.24, %95 CI -4.47 to 0.80) and functional limitation (ProFitMap-Neck) (Cohen's d = 0.7, mean difference 8.27, %95 CI 0.20 to 16.35). The results of T-Tests demonstrated that neither intervention was superior in terms of pain intensity, muscle performance, symptoms (ProFitMap-Neck), HADS, or SF-36 (Cohen's d < 0.5).

CONCLUSIONS

VR can be applied for improving proprioception and for decreasing cervical articular pain in CNP patients. In addition, VR may be more effective for decreasing functional limitations in patients. Clinicians can choose MC exercises with or without VR for improving pain, muscle performance, symptoms, anxiety/depression, and quality of life.

Differences in upper body posture between individuals with and without chronic idiopathic neck pain during computerised device use: A 3D motion analysis study

BACKGROUND

Computer use is associated with poor postures and increased risk of developing neck pain. Evaluating differences in working posture of individuals with and without chronic neck pain may assist the development of strategies to lessen or prevent pain.

OBJECTIVE

To identify if upper body kinematics differs between individuals with and without chronic idiopathic neck pain during four conditions (tablet, laptop, and desktop computer sitting and standing).

METHODS

Three-dimensional (3D) motion capture measured upper body kinematics in 44 individuals with chronic idiopathic neck pain > 90 days (Cases n = 22) and without pain (Control n = 22), during a typing task under four conditions: tablet, laptop, desktop computer (sitting and standing). Differences between groups were evaluated using generalised linear mixed models.

RESULTS

Across all conditions and compared to controls, cases had significantly less flexion between their head-neck and upper trunk segments (between group mean difference 7.15°, 2.1, 12.2, p = .006), greater upper trunk flexion relative to the laboratory (-6.15°, -10.9, -1.3, p = .012), greater shoulder flexion bilaterally (left 12.35°, 6.7, 17.9, p < .001; right 13.49°, 7.9, 19.1, p < .001) and less right elbow flexion (-6.87°, -12.1, -1.7, p = .010). Approaching significance, the case group had less left elbow flexion (between group mean difference -5.36°, -10.9, 0.1, p = .056) and a smaller mean craniocervical angle for the seated desktop condition (group x condition interaction -6.37°; 95% CI -12.7, -0.1, p = .052).

SIGNIFICANCE

Individuals with neck pain consistently used different upper body postures compared to individuals without pain when working on computerised devices under varying workstation conditions. This finding suggests that people with neck pain work in potentially aggravating postures that may be associated with their pain.

The impact of subclinical neck pain on goal-directed upper limb movement in the horizontal plane

Subclinical neck pain (SCNP) refers to recurrent neck pain and/or stiffness for which individuals have not yet sought treatment. Prior studies have shown that individuals with SCNP have altered cerebellar processing that exhibits an altered body schema. The cerebellum also plays a vital role in upper limb reaching movements through refining internal models and integrating sensorimotor information. However, the impact of SCNP on these processes has yet to be examined in the context of a rapid goal-directed aiming response that relies on feedforward and feedback processes to guide the limb to the target. To address this, SCNP and control participants performed goal-directed upper limb movements with the dominant and non-dominant hands using light and heavy styli in the horizontal plane. The results show greater peak accelerations in SCNP participants using the heavy stylus. However, there were no other group differences seen, possibly due to the fact that reaching behavior predominantly relies on vision such that any proprioceptive deficits seen in those with SCNP can be compensated. This study illustrates the robust compensatory nature of the CNS when performing end-effector reaching tasks, suggesting studies altering visual feedback may be needed to see the full impact of SCNP on upper limb aiming.

A Survey of Musculoskeletal Disorders in the Orthopaedic Surgeon: Identifying Injuries, Exacerbating Workplace Factors, and Treatment Patterns in the Orthopaedic Community

Introduction:

As demand for orthopaedic care increases, the orthopaedic community must preserve access to skilled physicians. Workplace hazards and related injuries or conditions contribute to musculoskeletal (MSK) stress on orthopaedic surgeons, which can lead to undesirable medical leaves of absence or early retirement. The purpose of this study was to identify and characterize work-related and non–work-related MSK conditions that affect orthopaedic surgeons and differential injury patterns among male and female surgeons. This study hypothesized that MSK conditions would be exacerbated by work, correlate with age, and show gender-based disparities. Identifying MSK conditions and associated workplace hazards may ultimately help guide preventive or protective efforts.

Methods:

Following IRB and society approvals, a modified 15-question physical discomfort survey was emailed to a randomized selection of American Academy of Orthopaedic Surgeons (AAOS) members and all Ruth Jackson Orthopaedic Society members. Data were deidentified and merged by AAOS; analyses were performed by the authors.

Results:

Most surgeons reported at least one MSK condition (86%; 95% male versus 82% female, P = 0.317), with an average of two conditions per surgeon. Low back pain (56%) and neck pain (42%) were the two most common conditions reported. Male surgeons were more likely to report medial epicondylitis (P = 0.040), lateral epicondylitis (P ≤ 0.001), low back pain (P = 0.001), and lumbar radiculopathy (P = 0.001); however, male respondents were significantly older than female respondents (57 versus 43 years, P ≤ 0.0001), and some conditions were age-correlated. Most respondents reported at least one work-attributed MSK condition (64%; 68% male versus 62% female, P = 0.806). Caseload was not associated with an increased number of work-related MSK conditions; yet, 60% of surgeons reported that work worsened symptoms. Surgical treatment was sought most often for lumbar radiculopathy (6%) and carpal tunnel syndrome (6%). Sixty-nine leaves of absence were reported; most less than 1 month (55%). Exacerbating workplace factors included positioning (patient/surgeon), instruments, and personal protective equipment.

Discussion:

Work-related MSK conditions are common among orthopaedic surgeons. Greater awareness of potential workplace-related hazards and conditions is needed to address and mitigate negative MSK health effects on orthopaedic surgeons.

Assessment of Neuromuscular and Psychological Function in People with Recurrent Neck Pain during a Period of Remission: Cross-Sectional and Longitudinal Analyses

The aim of this study was to examine for the presence of differences in neuromuscular and psychological function in individuals with recurrent neck pain (RNP) or chronic neck pain (CNP) following a whiplash trauma compared to healthy controls. A secondary aim was to examine whether neuromuscular characteristics together with psychological features in people with RNP were predictive of future painful episodes. Multiple features were assessed including neck disability, kinesiophobia, quality of life, cervical kinematics, proprioception, activity of superficial neck flexor muscles, maximum neck flexion and extension strength, and perceived exertion during submaximal contractions. Overall, those with RNP (n = 22) and CNP (n = 8) presented with higher neck disability, greater kinesiophobia, lower quality of life, slower and irregular neck movements, and less neck strength compared to controls (n = 15). Prediction analysis in the RNP group revealed that a higher number of previous pain episodes within the last 12 months along with lower neck flexion strength were predictors of higher neck disability at a 6-month follow-up. This preliminary study shows that participants with RNP presented with some degree of altered neuromuscular features and poorer psychological function with respect to healthy controls and these features were similar to those with CNP. Neck flexor weakness was predictive of future neck disability.

Is Injury an Occupational Hazard for Horseracing Staff?

Occupational health is a key priority for the horseracing industry, yet little research on occupational injuries exists. This study investigated the prevalence and the effect of injury in British horseracing staff during a 12-month period. An online retrospective survey was answered by 352 participants, identifying self-reported injury prevalence, injury management practices and attitudes towards workplace injury reporting. Chi Squared tests for independence were undertaken. A total of 310 (88.1%) staff reported injuries; risk factors for injury type included self-perceived job security, working hours, and perceived job control. Physical limitations, loss of confidence, workplace changes, and lifestyle implications were reported as consequences of injury. A total of 75.3% (n = 134) of staff were likely to seek time-off following fractures, but only 48.6% (n = 86) would take time-off for concussion. Attitudes towards injury management were influenced by financial circumstances, perceived staff shortages, previous injury experiences, and perceived employer expectations. The high self-reported injury prevalence could result in decreased workforce efficiency, poor physical health, and negative implications on retention and career longevity. The perception of invisible injuries, i.e., concussion, and subsequent management, should be of immediate concern to racing organizations. This paper identifies recommendations to enhance the safety and wellbeing of horseracing staff.

Neck pain: global epidemiology, trends and risk factors

BACKGROUND

Neck pain is one of the most common musculoskeletal disorders, having an age-standardised prevalence rate of 27.0 per 1000 population in 2019. This literature review describes the global epidemiology and trends associated with neck pain, before exploring the psychological and biological risk factors associated with the initiation and progression of neck pain.

METHODS

The PubMed database and Google Scholar search engine were searched up to May 21, 2021. Studies were included that used human subjects and evaluated the effects of biological or psychological factors on the occurrence or progression of neck pain, or reported its epidemiology.

RESULTS

Psychological risk factors, such as long-term stress, lack of social support, anxiety, and depression are important risk factors for neck pain. In terms of the biological risks, neck pain might occur as a consequence of certain diseases, such as neuromusculoskeletal disorders or autoimmune diseases. There is also evidence that demographic characteristics, such as age and sex, can influence the prevalence and development of neck pain, although further research is needed.

CONCLUSIONS

The findings of the present study provide a comprehensive and informative overview that should be useful for the prevention, diagnosis, and management of neck pain.

The Heteronormativity Theory of Low Sexual Desire in Women Partnered with Men

Low sexual desire in women partnered with men is typically presumed to be a problem-one that exists in women and encourages a research agenda on causation and treatment targeting women. In this paper, we present a distinct way forward for research on low sexual desire in women partnered with men that attends to a more structural explanation: heteronormativity. A heteronormative worldview assumes that relationships and structures are heterosexual, gender (usually conflated with sex) is binary and complementary, and gender roles fit within narrow bounds including nurturant labor for women. We propose the heteronormativity theory of low sexual desire in women partnered with men, arguing that heteronormative gender inequities are contributing factors. We outline four hypotheses and their predictions related to: inequitable divisions of household labor, blurring of partner and mother roles, objectification of women, and gender norms surrounding sexual initiation. We discuss some mechanisms-social, physiological, and otherwise-for the heteronormativity theory, especially related to stress, objectification, and nurturance. We close by noting some limitations of our paper and the ways that the heteronormativity theory of low sexual desire in women partnered with men provides a rigorous, generative, and empirical way forward.

Examining relationships between sleep posture, waking spinal symptoms and quality of sleep: A cross sectional study

INTRODUCTION

Research with a focus on sleep posture has been conducted in association with sleep pathologies such as insomnia and positional obstructive sleep apnoea. Research examining the potential role sleep posture may have on waking spinal symptoms and quality of sleep is however limited. The aims of this research were to compare sleep posture and sleep quality in participants with and without waking spinal symptoms.

METHODS

Fifty-three participants (36 female) were, based on symptoms, allocated to one of three groups; Control (n = 20, 16 female), Cervical (n = 13, 10 female) and Lumbar (n = 20, 10 female). Participants completed an online survey to collect general information and patient reported outcomes and were videoed over two consecutive nights to determine sleep posture using a validated classification system including intermediate sleep postures.

RESULTS

Participants in the symptomatic groups also reported a lower sleep quality than the Control group. Compared to Control group participants, those in the Cervical group had more frequent posture changes (mean (SD); 18.3(6.5) versus 23.6(6.6)), spent more time in undesirable/provocative sleep postures (median IQR; 83.8(16.4,105.2) versus 185.1(118.0,251.8)) minutes and had more long periods of immobility in a provocative posture, (median IQR: 0.5(0.0,1.5) versus 2.0 (1.5,4.0)). There were no significant differences between the Control and Lumbar groups in the number of posture changes (18.3(6.5) versus 22.9(9.1)) or the time spent in provocative sleep postures (0.5(0.0,1.5) versus 1.5(1.5,3.4)) minutes.

DISCUSSION

This is the first study using a validated objective measure of sleep posture to compare symptomatic and Control group participants sleeping in their home environment. In general, participants with waking spinal symptoms spent more time in provocative sleep postures, and experienced poorer sleep quality.

Normative cervical spine kinematics of a circumduction task

Neck pain is a prevalent condition and clinical examination techniques are limited and unable to assess out-of-plane motion. Recent works investigating cervical kinematics during neck circumduction (NC), a dynamic 3D task, has shown the ability to discern those with and without neck pain. The purposes of this study were to establish 1) confidence and prediction intervals of head-to-torso kinematics during NC in a healthy cohort, 2) a baseline summative metric to quantify the duration and magnitude of deviations outside the prediction interval, and 3) the reliability of NC. Thirty-nine participants (25.6 ± 6.3 years, 19F/20M) without neck pain completed left and right NC. A two-way smoothing spline analysis of variance was utilized to determine the mean-fitted values and 90% confidence and prediction intervals for NC. A standardized effect size was calculated and aggregated across all axes (Delta RMSD aggregate), as a summative metric of motion quality. Confidence and prediction intervals were comparable for left and right NC and demonstrated excellent reliability. The average sum of the Delta RMSD aggregate was 2.76 ± 0.55 for left NC and 2.74 ± 0.63 for right NC. The results of this study demonstrate the feasibility of utilizing normative intervals of a NC task to assess head-to-torso kinematics.

Additive effect of "Brahma Mudra" on pain, proprioception and functional abilities in non-specific mechanical neck pain

OBJECTIVE

Being the second highest musculoskeletal problem irrespective of age, gender and occupation, the etiology of neck pain is predominantly mechanical in nature. This can lead to dysfunction with time and recurrence. Altered joint position sense (JPS) from soft tissues can alter the cervical biomechanics by compromising the cephalo spatial orientation, which depends on the visual, vestibular and proprioceptive cues. This study was done to observe the additive effect of "Brahma mudra" (BM) a yogic tool on non-specific mechanical neck pain and its clinical implication on pain, proprioception and functional abilities.

METHODS

It was a quasi-experimental pre -post study design involving 30 individuals from a software firm between the age group of 18-45 years. The conventional treatment group received standard physiotherapy regime and in the BM group BM was incorporated in addition to standard physiotherapy regime. Independent sample student t-test/Mann Whitney test were used to compare continuous variables between two groups. Paired sample test/Wilcoxon signed rank test were used for within groups.

RESULTS

There was a significant reduction in pain, improved functional abilities and proprioception in BM group when compared to conventional treatment group with 0.01 level of statistical significance.

CONCLUSION

It may be concluded that practice of BM had an added effect to conventional standard physiotherapy regime in reduction of pain, improvement of proprioception and functional abilities among individuals with chronic non-specific mechanical neck pain.

A Novel Biopsychosocial Approach to Neck Pain in Military Helicopter Aircrew

INTRODUCTION: Flight-related neck pain (FRNP) is a frequently reported musculoskeletal complaint among military helicopter aircrew. However, despite its prevalence and suspected causes, little is known of the underpinning pain mechanisms or the impact of neck pain on aircrews in-flight task performance. The biopsychosocial (BPS) approach to health, combined with the contemporary conceptualization of musculoskeletal pain, in which injury and pain are not necessarily synonymous, provides a relatively new holistic framework within which to consider the problem of FRNP in military helicopter aircrew. Combining these concepts, a new conceptual model is proposed to illustrate how biopsychosocial factors may influence pain perception, potentially affecting aircrews capacity to process information and, therefore, threatening in-flight task performance. Recommendations are made for considering the underlying pain mechanisms of FRNP to aid prognoses and guide the development of holistic evidence-based countermeasures for FRNP in military helicopter aircrew. Development of instruments able to measure psychosocial factors, such as self-efficacy and functional ability, validated in the military helicopter aircrew population, would assist this task.Vail RE, Harridge SDR, Hodkinson PD, Green NDC, Pavlou M. A novel biopsychosocial approach to neck pain in military helicopter aircrew. Aerosp Med Hum Perform. 2021; 92(5):333341.

Self-efficacy beliefs mediate the association between pain intensity and pain interference in acute/subacute whiplash-associated disorders

PURPOSE

To evaluate whether a set of pre-accident demographic, accident-related, post-accident treatment and psychosocial factors assessed in people with acute/subacute whiplash-associated disorders (WAD) mediate the association between pain intensity and: (1) pain interference and (2) expectations of recovery, using Bayesian networks (BNs) analyses. This study also explored the potential mediating pathways (if any) between different psychosocial factors.

METHODS

This was a cross-sectional study conducted on a sample of 173 participants with acute/subacute WAD. Pain intensity, pain interference, pessimism, expectations of recovery, pain catastrophizing, and self-efficacy beliefs were assessed. BN analyses were conducted to analyse the mediating effects of psychological factors on the association between pain intensity and pain-related outcomes.

RESULTS

The results revealed that self-efficacy beliefs partially mediated the association between pain intensity and pain interference. Kinesiophobia partially mediated the association between self-efficacy and pain catastrophizing. Psychological factors did not mediate the association between pain intensity and expectations of recovery.

CONCLUSION

These results indicate that individuals with acute/subacute WAD may present with lesser pain interference associated with a determined pain intensity value when they show greater self-efficacy beliefs. As the cross-sectional nature of this study limits firm conclusions on the causal impact, researchers are encouraged to investigate the role that patient's self-efficacy beliefs play in the transition to chronic WAD via longitudinal study designs.

Posture during the use of electronic devices in people with chronic neck pain: A 3D motion analysis project

BACKGROUND

Non-neutral postures during computerised device use coupled with increased usage may increase the risk of neck pain. Greater knowledge of postures that individuals with neck pain adopt during computerised device use is warranted.

OBJECTIVE

To evaluate neck and upper limb posture while using a tablet, laptop and desktop computer (sitting and standing) in individuals with chronic neck pain.

METHODS

Differences in three-dimensional kinematic variables were assessed during four conditions: tablet, laptop, desktop computer (sitting and standing) in 22 individuals with chronic neck pain >3 months. Differences between kinematic variables were determined using one-way repeated measures ANOVA with Bonferroni post-hoc tests.

RESULTS

Compared to the desktop (sitting), tablet and laptop use resulted in increased neck flexion (mean difference tablet - 14.42°, 95% CI - 19.88, -8.96, P < 0.001; laptop -7.19°, -12.08, -2.31, P = .020); upper trunk flexion (tablet -14.89°, -20.22, -9.56, P < 0.001; laptop -5.56°, -10.02, -1.09, P = .009) and tablet bilateral shoulder elevation (left 11.01 mm, 2.01, 20.04, P < .016; right 13.08 mm, 3.09, 23.11, P < .006).

CONCLUSIONS

Tablet and laptop use resulted in greater neck flexion, bilateral shoulder elevation and upper trunk flexion compared to a standard desktop computer, suggesting individuals with chronic neck pain should be mindful of their posture when using these smaller devices. Future research should explore how differences in posture may influence neck pain.

Is There an Association between Diabetes and Neck and Back Pain? Results of a Case-Control Study

We aimed to assess if subjects with diabetes exhibit higher prevalence of chronic back pain than age-sex-province of residence-matched non-diabetic controls. We also aimed to identify predictors for chronic neck pain (CNP) or chronic low back pain (CLBP) among subjects with diabetes. A case control study was conducted using data obtained from the Spanish National Health Survey 2017. Multivariable conditional and unconditional logistic regression models were constructed. A total of 2095 diabetes sufferers and 2095 non-diabetic matched controls were analyzed. The prevalence of CNP and CLBP was 27.3% and 34.8%, respectively, in diabetes sufferers and 22.1% and 29.0% in non-diabetes controls (both, p < 0.001). After multivariable analysis, the ORs showed significantly higher adjusted risk of CNP (OR 1.34; 95% CI 1.19–1.51) and CLBP (OR 1.19, 95% CI 1.09–1.31) in diabetes cases. Diabetes sufferers with CNP or CLBP showed higher use of pain medication and higher prevalence of migraine/frequent headache than controls. Female sex, worse self-rated health and use of pain medication were predictors for CNP and CLBP in subjects with diabetes. CNP and CLBP are significantly more prevalent in diabetes sufferers than in controls. Current results can help to design better preventive and educational strategies for these highly prevalent and burdensome pains among diabetic patients.

Effectiveness of extracorporeal shock wave therapy versus standard care in the treatment of neck and upper back myofascial pain: a single blinded randomised clinical trial

OBJECTIVES

To compare the efficacy of extracorporeal shock wave therapy versus standard care (ultrasound + hot pack + self-stretch-exercises) in treatment of neck and upper back myofascial pain syndrome.

DESIGN

Single-blind randomised clinical trial.

SETTING

Outpatients setting.

SUBJECTS

Patients with neck and upper back myofascial pain.

INTERVENTION

Participants were randomly allocated into shock wave group (n = 24), standard care (ultrasound + hot pack + self-stretch-exercises) group (n = 24) and control (self-stretch-exercises) group (n = 24) for four weeks.

MAIN MEASURES

The primary outcomes were pain intensity (visual analogue scale), pain pressure threshold (algometer) and disability (neck disability index). Measures were performed at baseline (week 0), week 1 and post-intervention (week 4).

RESULTS

Shock wave and ultrasound improved visual analogue scale (7.50 ± 1.71 to 5.72 ± 2.20 and 6.22 ± 2.54 to 4.95 ± 2.86, respectively, P = 0.083) and disability index (54.24 ± 15.53 to 39.04 ± 19.58 50.23 ± 19.57 to 32.10 ± 18.34, respectively, P = 0.495) similarly at first week examinations that were significantly higher than control (P < 0.05). In week 4 measurements, additional improvements were achieved concerning visual analogue scale and disability index in the shock wave (-4.00 ± 2.22 and -20.24 ± 16.56, respectively) and ultrasound (-2.18 ± 2.71 and -21.79 ± 10.56, respectively) groups. However, visual analogue scale improved more significantly in shock wave group than ultrasound group in fourth week measurements (P = 0.012).

CONCLUSION

Extracorporeal shock wave therapy was more effective in controlling of the pain intensity compared to ultrasound one month after treatment. However it had no superiority over ultrasound in improving neck disability index at this time point.Trial registrationwww.irct.ir, IRCT201608154104N5, registered 2016-09-25.

One-Year Follow-Up after Multimodal Rehabilitation for Patients with Whiplash-Associated Disorders

Long-term symptoms after whiplash injury often comprise neck pain, headache, anxiety, depression, functional impairment and low quality of life. In an observational cohort study, we examined physical and mental health effects in patients with subacute to chronic whiplash-associated disorders (WAD) after participation in a multimodal rehabilitation (MMR) program. MMR is a team-based multi-professional method based on a bio-psycho-social model with a cognitive focus to reach an individualized and common goal for the team and patient together. Standardized self-report questionnaires were filled in three times: before MMR, after MMR, and one year after MMR. A total of 322 participants completed the program, 161 of whom responded in full and were further analyzed. At one-year follow-up after MMR, a significant improvement was seen in the evaluation of the primary outcomes (physical and mental health) and secondary outcomes (anxiety, depression, pain intensity and interference with life). Women improved on all outcomes while men did not improve on the psychological measures (mental health, depression and anxiety). This study indicates that a MMR program could be beneficial for patients with subacute to chronic WAD, at least for women, since the outcomes at one-year follow-up were positive.

Intensive Motion Style Acupuncture Treatment (MSAT) Is Effective for Patients with Acute Whiplash Injury: A Randomized Controlled Trial

In this single-center, parallel, randomized controlled trial, we aim to examine the effects and safety of motion style acupuncture treatment (MSAT; a combination of acupuncture and Doin therapy) on pain reduction and functional improvement in patients with whiplash-associated disorders (WADs). Ninety-seven patients with cervical pain admitted to the Bucheon Jaseng Hospital of Korean Medicine, South Korea, due to acute whiplash injury were treated with integrative Korean medicine (IKM) with (MSAT group, 48 patients) or without (control group, 49 patients) an additional 3-day MSAT during hospitalization (5-14 days) and followed-up for 90 days. The mean numeric rating scale (NRS) scores of the MSAT and control groups at baseline were 5.67 (95% confidence interval (CI), 5.33, 6.01) and 5.44 (95% CI, 5.06, 5.82), respectively, and on day 5, 3.55 (95% CI, 3.04, 4.06) and 4.59 (95% CI, 4.10-5.07), respectively. The NRS change difference between the groups was -1.07 (95% CI, -1.76, -0.37). The rate of recovery of neck pain (NRS score change ≥ 2 points) was significantly faster in the MSAT than in the control group (log-rank test p = 0.0055). IKM treatment combined with MSAT may be effective in reducing the pain and improving the range of motion in patients with WADs.

Estimating the number of traffic crash-related cervical spine injuries in the United States; An analysis and comparison of national crash and hospital data

BACKGROUND

Cervical spine injury is a common result of traffic crashes, and such injuries range in severity from minor (i.e. sprain/strain) to moderate (intervertebral disk derangement) to serious and greater (fractures, dislocations, and spinal cord injuries). There are currently no reliable estimates of the number of crash-related spine injuries occurring in the US annually, although several publications have used national crash injury samples as a basis for estimating the frequency of both cervical and lumbar spinal disk injuries occurring in lower speed rear impact crashes.

PURPOSE

To develop a reliable estimate of the number of various types of cervical spine injuries occurring in the US by comparing data from national crash injury to national hospital ED and inpatient samples.

STUDY DESIGN

Comparative cross-sectional METHODS: Cervical spine injury data were accessed, analyzed, and compared from 3 national databases; the National Automotive Sampling System-Crashworthiness Data System (NASS-CDS), Nationwide Emergency Department Sample (NEDS), and the Nationwide Inpatient Sample (NIS).

RESULTS

It is estimated that there are approximately 869,000 traffic crash-related cervical spine injuries seen in hospitals in the US annually, including around 841,000 sprain/strain (whiplash) injuries, 2800 spinal disk injuries, 23,500 fractures, 2800 spinal cord injuries, and 1500 dislocations. Because of a highly restrictive inclusion criteria for both crash and injury types, as well as a very small sample size, the NASS-CDS underestimated all types of crash-related cervical spine injuries seen in US hospital emergency departments by 84 %. The injury type with the largest degree of underestimation in the NASS-CDS was cervical disk injuries, which were estimated at an 88 % lower frequency than in the NEDS. National insurance claim data, which include cases of cervical disk injury diagnosed both in and outside of the ED, indicate that the NEDS likely undercounts cervical disk injuries by 92 %, and thus the NASS-CDS correspondingly undercounts such injuries by 99 % or more.

CONCLUSIONS

Because of a limited sample size and restrictive criteria for both crash and injury inclusion, the NASS-CDS cannot be used to estimate the number of crash-related spinal injuries of any type or severity in the US. The most inappropriate use of the database is for estimating the number of spinal injuries resulting from low speed rear impact collisions, as the NASS-CDS samples fewer than 1 in 100,000 of the cervical spine injuries of any type occurring in low speed rear impact collisions.

Exposure to a motor vehicle collision and the risk of future back pain: A systematic review and meta-analysis

OBJECTIVE

The purpose of this study is to summarize the evidence for the association between exposure to a motor vehicle collision (MVC) and future low back pain (LBP).

LITERATURE SURVEY

Persistent low back pain (LBP) is a relatively common complaint after acute injury in a MVC, with a reported 1 year post-crash prevalence of at least 31 % of exposed individuals. Interpretation of this finding is challenging given the high incidence of LBP in the general population that is not exposed to a MVC. Risk studies with comparison control groups need to be examined in a systematic review.

METHODOLOGY

A systematic search of five electronic databases from 1998 to 2019 was performed. Eligible studies describing exposure to a MVC and risk of future non-specific LBP were critically appraised using the Quality in Prognosis Studies (QUIPS) instrument. The results were summarized using best-evidence synthesis principles, a random effects meta-analysis and testing for publication bias.

SYNTHESIS

The search strategy yielded 1136 articles, three of which were found to be at low to medium risk of bias after critical appraisal. All three studies reported a positive association between an acute injury in a MVC and future LBP. Pooled analysis of the results resulted in an unadjusted relative risk of future LBP in the MVC-exposed and injured population versus the non-exposed population of 2.7 (95 % CI [1.9, 3.8]), which equates to a 63 % attributable risk under the exposed.

CONCLUSIONS

There was a consistent positive association in the critically reviewed literature that investigated the risk of future LBP following an acute MVC-related injury. For the patient with chronic low back pain who was initially injured in a MVC, more often than not (63 % of the time) the condition was caused by the MVC. These findings are likely to be of interest to clinicians, insurers, patients, governments and the courts. Future studies from both general and clinical populations would help strengthen these results.

Osteopathic manipulative treatment combined with exercise improves pain and disability in individuals with non-specific chronic neck pain: A pragmatic randomized controlled trial

PURPOSE

To determine effectiveness of osteopathic manipulative treatment combined with stretching and strengthening exercises in the cervical region on pain and disability in individuals with non-specific chronic neck pain.

METHODS

90 adults with non-specific chronic neck pain were randomized to either exercises group (EG, n = 45) or osteopathic manipulative treatment associated with exercises group (OMT/EG, n = 45). The primary outcomes were obtained by the use of Numeric Pain-Rating Scale (NPRS), Pressure Pain Threshold (PPT) and Neck Disability Index (NDI). Secondary outcomes included range of motion (ROM) for cervical spine rotation, Fear-Avoidance Beliefs Questionnaire Work/Physical Activity (FABQ-W/PA) and Pain-self efficacy at two different moments: baseline and 4 weeks after the first treatment. Techniques and dosages of OMT were selected pragmatically by a registered osteopath. Generalized Estimating Equations model (GEE), complemented by the Least Significant Difference (LSD) and the intention-to-treat analysis, was used to assess the clinical outcomes.

RESULTS

Analysis with GEE indicated that OMT/EG reduced pain and disability more than the EG alone after 4 weeks of treatment with statistically significant difference (p < 0,05), as well as cervical active rotation was significantly improved (p = 0.03). There were no between-group differences observed in Pressure Pain Threshold (PPT) measure, Fear-Avoidance Beliefs Questionnaire and Pain-self efficacy.

CONCLUSION

The association between OMT and exercises reduces pain and improves functional disability more than only exercise for individuals with non-specific chronic neck pain.

Predictors of visit frequency for patients using ongoing chiropractic care for chronic low back and chronic neck pain; analysis of observational data

BACKGROUND

Chronic spinal pain is prevalent, expensive and long-lasting. Several provider-based nonpharmacologic therapies have now been recommended for chronic low-back pain (CLBP) and chronic neck pain (CNP). However, healthcare and coverage policies provide little guidance or evidence regarding the long-term use of this care. To provide one glimpse into the long-term use of nonpharmacologic provider-based care, this study examines the predictors of visit frequency in a large sample of patients with CLBP and CNP using ongoing chiropractic care.

METHODS

Observational data were collected from a large national sample of chiropractic patients in the US with non-specific CLBP and CNP. Visit frequency was defined as average number of chiropractic visits per month over the 3-month study period. Potential baseline predictor variables were entered into two sets of multi-level models according to a defined causal theory-in this case, Anderson's Behavioral Model of Health Services Use.

RESULTS

Our sample included 852 patients with CLBP and 705 with CNP. Visit frequency varied significantly by chiropractor/clinic, so our models controlled for this clustering. Patients with either condition used an average of 2.3 visits per month. In the final models visit frequency increased (0.44 visits per month, p = .008) for those with CLBP and some coverage for chiropractic, but coverage had little effect on visits for patients with CNP. Patients with worse function or just starting care also had more visits and those near to ending care had fewer visits. However, visit frequency was also determined by the chiropractor/clinic where treatment was received. Chiropractors who reported seeing more patients per day also had patients with higher visit frequency, and the patients of chiropractors with 20 to 30 years of experience had fewer visits per month. In addition, after controlling for both patient and chiropractor characteristics, the state in which care was received made a difference, likely through state-level policies and regulations.

CONCLUSIONS

Chiropractic patients with CLBP and CNP use a range of visit frequencies for their ongoing care. The predictors of these frequencies could be useful for understanding and developing policies for ongoing provider-based care.

A Pilot Study Evaluating the Prevalence of Cervical Spine Dysfunction Among Students of Dentistry at the Medical University

Introduction: Cervical pain affects most people at some stage, especially middle-aged. It is one of the symptoms of cervical spine dysfunction. The prevalence of neck pain varies and depends on the population studied.

Aim: The aim of the study was to assess the prevalence of cervical spine dysfunction among dentistry students from a medical university.

Materials and Methods: The study was conducted on a group of 112 randomly chosen, generally healthy students (73 women and 39 men) of the faculty of medicine, division of dentistry at a medical university, aged 20–32, average 22.88 ± 2.7. The survey was based on a questionnaire about possible symptoms and disorders of the cervical spine in the 6 preceeding months. A bodychart was used to visualize ailments in relation to the scheme of human body, and a Graded Chronic Pain Scale was applied to assess levels of pain. Additionally, the Perceived Stress Scale and Neck Disability Index were evaluated.

Results: With respect to the questionnaire about possible symptoms of cervical spine disorders in the 6 preceeding months, 22.32% of students declared headaches 2–3 times a week, and 45.53% 2–3 times a month. 42.85% of the participants reported difficulties with concentration, 56.25% showed attention issues, and 25% had problems with memory. Moreover, 9.82% of the subjects suffered from depression, and 27.67% declared mood disorders. The bodychart revealed the occurrence of pain within the cervical spine in 47.32% of the respondents. 31.25% of students declared discomfort in the suboccipital area. In 57.14% of people, low intensity of chronic pain without functional disorders was noted. A moderate level of stress was reported in 58.03% of students. Mild cervical spine disorders were found in 53.57% of cases.

Conclusion: The relatively high prevalence of symptoms of the cervical spine dysfunction, chronic pain, stress, and neck disability among young people may indicate that numerous spinal disorders identified in dentists result not only from their profession, in which spine is significantly overloaded, but also individual predispositions including biopsychosocial profile and the changing lifestyle habits of young people.

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.

Recurrent neck pain patients exhibit altered joint motion pattern during cervical flexion and extension movements

BACKGROUND

Impaired sensorimotor ability has been demonstrated in recurrent neck pain patients. It is however not clear if cervical joint motion and pressure pain sensitivity in recurrent neck pain patients are different from asymptomatic controls.

METHODS

Cervical flexion and extension motions were examined by video-fluoroscopy and pressure pain thresholds were assessed bilaterally over C2/C3, C5/C6 facet joints and right tibialis anterior in eighteen recurrent neck pain patients and eighteen healthy subjects. Individual joint motion was analyzed by dividing fluoroscopic videos into 10 epochs. The motion opposite to the primary direction (anti-directional motion) and motion along with the primary direction (pro-directional motion) of each joint were extracted across epochs. Total joint motion was the sum of anti-directional and pro-directional motions. Joint motion variability was represented by the variance of joint motions across epochs.

FINDINGS

Compared to controls, recurrent neck pain patients showed: 1) decreased anti-directional motion at C2/C3 and C3/C4 (P < 0.05) and increased anti-directional motion at C5/C6 and C6/C7 (P < 0.05) during extension motion. 2) Increased overall anti-direction motion during flexion motion (P < 0.05). 3) Lower joint motion variability at C3/C4 during extension motion (P < 0.05).

INTERPRETATION

Recurrent neck pain patients showed a redistribution of anti-directional motion between the middle cervical spine and the lower cervical spine during cervical extension and increased overall anti-directional motion during cervical flexion compared with healthy controls. The anti-directional motion was more sensitive to neck pain compared to other cervical joint motion parameters in the present study.

The Influence of Subclinical Neck Pain on Neurophysiological and Behavioral Measures of Multisensory Integration

Multisensory integration (MSI) is necessary for the efficient execution of many everyday tasks. Alterations in sensorimotor integration (SMI) have been observed in individuals with subclinical neck pain (SCNP). Altered audiovisual MSI has previously been demonstrated in this population using performance measures, such as reaction time. However, neurophysiological techniques have not been combined with performance measures in the SCNP population to determine differences in neural processing that may contribute to these behavioral characteristics. Electroencephalography (EEG) event-related potentials (ERPs) have been successfully used in recent MSI studies to show differences in neural processing between different clinical populations. This study combined behavioral and ERP measures to characterize MSI differences between healthy and SCNP groups. EEG was recorded as 24 participants performed 8 blocks of a simple reaction time (RT) MSI task, with each block consisting of 34 auditory (A), visual (V), and audiovisual (AV) trials. Participants responded to the stimuli by pressing a response key. Both groups responded fastest to the AV condition. The healthy group demonstrated significantly faster RTs for the AV and V conditions. There were significant group differences in neural activity from 100-140 ms post-stimulus onset, with the control group demonstrating greater MSI. Differences in brain activity and RT between individuals with SCNP and a control group indicate neurophysiological alterations in how individuals with SCNP process audiovisual stimuli. This suggests that SCNP alters MSI. This study presents novel EEG findings that demonstrate MSI differences in a group of individuals with SCNP.

Cervical proprioception and its relationship with neck pain intensity in subjects with cervical spondylosis

Background

Cervical proprioception is critical in the maintenance of posture and movements, so its assessment in different cervical conditions has gained importance in recent clinical practice. Studies reporting this assessment in subjects with cervical spondylosis (CS) have not previously been investigated. The goals of the study are (1) comparison of joint position error (JPE) in subjects with CS to healthy control group. (2) Correlation of neck pain intensity to cervical proprioception in patients with CS.

Methods

In a Cross-sectional study, 132 subjects with CS and 132 healthy age-matched control subjects were evaluated for cervical JPE with the cervical range of motion device. The subjects were blindfolded and repositioned their heads to a target position, which was determined by the examiner previously and their repositioning accuracy (absolute error in degrees) was measured in the frontal (flexion and extension) and transverse planes (left rotation and right rotation). The CS subjects resting neck pain intensity was assessed using visual analog scale (VAS).

Results

CS subjects showed statistically significantly larger JPEs compared to healthy control subjects in all the directions tested (flexion - 95% CI = 2.38–3.55, p < 0.001, extension - 95% CI =3.26–4.33, p < 0.001, left rotation - 95% CI = 2.64 - 3.83, p < 0.001, right rotation − 95% CI = 3.77–4.76, p < 0.001). The mean JPE errors in the CS group ranged from 6.27° to 8.28° and in the control group ranged from 2.36° to 4.48°. Pearson’s correlation coefficient showed a significant and positive relationship between neck pain intensity and cervical proprioception (p ≤ 0.001).

Conclusions

Proprioception is impaired in subjects with CS when compared to healthy control group. Higher pain intensity was associated with greater cervical JPE in patients with CS.

Changes in chronic neck pain following the introduction of a visco-elastic polyurethane foam pillow and/or chiropractic treatment

BACKGROUND

Sleep ergonomics are increasingly prescribed as an adjunct treatment to chronic neck pain. Postulated benefits to maintaining the ideal sleeping posture are improved tissue repair in and around the facet joints, decrease in tension of associated musculature and better quality sleep.

AIM

The purpose of this study was to determine if the inclusion of a visco-elastic polyurethane (VEP) pillow could benefit the chiropractic treatment of chronic neck pain.

SETTING

The study took place at a chiropractic training clinic in Johannesburg.

METHOD

Participants were randomly assigned to either a chiropractic treatment only group (CHI) (n = 15) or a chiropractic treatment with a VEP pillow group (CHI+P) (n = 15). Both groups underwent six chiropractic treatments spaced at 3-4-day intervals and the CHI+P were provided with a VEP pillow. Baseline and post-test measurements consisted of the initial Numerical Pain Rating Scale (NRS) and the Vernon-Mior Neck Pain and Disability Index (NDI).

RESULTS

Both the CHI and CHI+P groups significantly (p ≤ 0.05) improved their NRS (p = 0.001 for both groups) and NDI (p = 0.001 and p = 0.000, respectively) scores. Furthermore, post hoc analysis indicated a significant difference at post-test between the two groups for NRS (p = 0.015), but not for NDI (p = 0.195). The CHI+P demonstrated an improved minimum clinically important difference (MCID) (43% vs. 73% for NRS and 59% vs. 71% for the NDI).

CONCLUSION

Findings of this study suggest that a VEP pillow could be included as an adjunct management tool to chiropractic treatment of chronic neck pain.

Pragmatic cluster randomised double-blind pilot and feasibility trial of an active behavioural physiotherapy intervention for acute non-specific neck pain: a mixed-methods protocol

INTRODUCTION

Non-specific neck pain causes pain and disability and contributes substantial socioeconomic burden internationally. Up to 50% of adults experience neck pain annually, leading to reduced the quality of life. An active behavioural physiotherapy intervention (ABPI) may be feasible to manage patients with acute non-specific neck pain to prevent transition to chronicity. A recent pilot and feasibility trial investigating an acute whiplash-associated disorder population found potential value of the ABPI with 95% of participants fully recovered (Neck Disability Index: NDI ≤4, compared with 17% in the standard physiotherapy arm); supporting a definitive trial. Qualitative findings from the physiotherapists supported the potential of the ABPI in a non-specific neck pain population.

METHODS AND ANALYSIS

Two phases: (1) Pragmatic cluster randomised double-blind, parallel 2-arm (ABPI vs standard physiotherapy intervention) pilot and feasibility trial to evaluate the procedures and feasibility of the ABPI for the management of acute non-specific neck pain. Six physiotherapy departments from six public hospitals in Thailand will be recruited and cluster randomised by a computer-generated randomisation sequence with block sampling. Sixty participants (30 each arm, 10 per hospital) will be assessed at baseline and 3 months following baseline for NDI, Numerical Rating Scale for pain intensity, cervical range of motion, fear-avoidance beliefs questionnaire and EuroQol-5 dimensions 5 levels outcomes, and (2) Embedded qualitative study using semistructured interviews to explore acceptability of the ABPI to participants (n=12) and physiotherapists (n=3). Descriptive analysis of the quantitative data and interpretative phenomenological analysis to code and analyse qualitative data (deductive and inductive) will inform feasibility for a future definitive trial.

ETHICS AND DISSEMINATION

This trial is approved by the Naresuan University Institutional Review Board (NUIRB_0380/61).

TRIAL REGISTRATION NUMBER AND STATUS

TCTR20180607001; Recruiting commenced 1 February 2019.

Cervical surgery rate in neck pain patients with and without acupuncture treatment: a retrospective cohort study

OBJECTIVE

Surgical treatment of neck pain often entails high costs and adverse events. The present cohort study investigated whether utilisation of acupuncture in neck pain patients is associated with a reduced rate of cervical surgery.

METHODS

The Korean National Health Insurance Service National Sample Cohort (NHIS-NSC) database was retrospectively analysed to identify the 2 year incidence of cervical surgery in Korean patients suffering neck pain from 2004 to 2010. The incidence was calculated and compared between patients receiving and not receiving acupuncture treatment using Cox proportional hazards models. Cumulative survival rates were compared using Kaplan-Meier survival analysis.

RESULTS

The acupuncture and control groups included 50 171 and 128 556 neck pain patients, respectively. A total of 50 161 patients were selected in each group following propensity score matching with regard to sex, age, income and Charlson comorbidity index. The hazard ratio (HR) for surgery within 2 years was significantly lower in the acupuncture group compared with the control group (HR 0.397, 95% CI 0.299 to 0.527). In addition, subgroup analyses according to gender, age and income revealed consistent results for both men (HR 0.337, 95% CI 0.234 to 0.485) and women (HR 0.529, 95% CI 0.334 to 0.836); the results were consistently observed across all age and income strata. Sensitivity analysis with varying numbers of acupuncture treatments and treatment course duration also consistently indicated lower HRs for surgery within 2 years in the acupuncture group compared with the control group.

CONCLUSIONS

A significantly lower HR for cervical surgery was observed in neck pain patients following acupuncture treatment. Acupuncture treatment may therefore be an effective method for managing neck pain, and has the potential to mitigate unnecessary surgery. These findings need to be confirmed by prospective studies.

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.

Is kinesiophobia and pain catastrophising at baseline associated with chronic pain and disability in whiplash-associated disorders? A systematic review

BACKGROUND

Kinesiophobia and pain catastrophising may be associated with patients' transition from having acute to chronic pain following a whiplash injury.

OBJECTIVE

To systematically review and critically appraise the literature to determine whether kinesiophobia and pain catastrophising are associated with greater likelihood of patients developing chronic pain and disability following a whiplash injury.

DESIGN

A systematic review of the literature DATA SOURCES: Electronic searches of PubMed, AMED, CINAHL, PsycINFO, and PubPsych, and grey literature were undertaken from inception to September 2017.

ELIGIBILITY CRITERIA FOR SELECTING STUDIES

Study selection was based on longitudinal studies evaluating how kinesiophobia and/or pain catastrophising at baseline are associated with pain intensity, disability or both after a whiplash injury.

RESULTS

We included 14 longitudinal studies that described 12 independent cohorts with a total sample of 2733 participants with whiplash-associated disorder. Kinesiophobia at baseline was not associated with pain intensity over time (three studies). Whether kinesiophobia at baseline was associated with disability was unclear as results were conflicting (six studies). There were also conflicting results when we examined the association between pain catastrophising and both pain intensity (five studies) and disability (eight studies).

SUMMARY/CONCLUSIONS

Kinesiophobia at baseline was not associated with pain intensity over time. There were conflicting results for the remaining analyses. The size of the associations was small. The overall quality of the evidence was very low.

TRIAL REGISTRATION NUMBER

CRD42016053864.

A preliminary biopsychosocial analysis of online information on causes of neck pain

OBJECTIVE

The aim of the present study was to analyse the freely available online information on the causes of neck pain based on the biopsychosocial model of pain.

METHODS

A preliminary biopsychosocial analysis tool was developed, after an extensive literature review of the pathoanatomical and psychosocial contributors for neck pain. The websites that commonly appeared after the search term "causes of neck pain" in the first two pages of the search engines (Google, Yahoo and Bing) were selected for the biopsychosocial analysis. In addition, the websites were reviewed for Health on Net (HON) certification.

RESULTS

Ten websites were analysed, of which eight were identified to contain a predominant biomedical orientation, as they reported only the pathoanatomical causes of neck pain. The remaining two websites were determined to represent limited psychosocial information and described only two psychological contributors to the neck pain.

CONCLUSIONS

The online information on the causes of neck pain appears to contain limited biopsychosocial orientation. Further detailed analysis is essential to obtain firm conclusions on the content validity of online information on neck pain.

Postural control in subclinical neck pain: a comparative study on the effect of pain and measurement procedures

BACKGROUND AND AIMS

This study investigated whether young university students with neck pain (NP) have postural control deficits when compared to sex and age-matched asymptomatic subjects.

METHODS

Centre of pressure (COP) sway area, velocity, anterior-posterior and mediolateral distances were measured in participants with (n=27) and without (n=27) neck pain for different combinations of static standing (narrow stance, tandem stance and single leg stance) and measurement time (90, 60, 30 and 15 s) with eyes closed using a force plate. Additionally, static and dynamic clinical tests of postural control were used.

RESULTS

No significant between group differences were found for the COP measurements (p>0.05). However, individuals with subclinical NP were more likely to fail the 90 s tandem test (p<0.05) in the force plate and univariate comparisons revealed significant between group differences in the tandem and single leg stance clinical test measurements.

CONCLUSIONS

Taken together, the inconsistent results might suggest an emerging postural control deficit in university students with low disability and low intensity chronic idiopathic NP.

The effects of qigong on neck pain: A systematic review

BACKGROUND AND PURPOSE

Neck pain is a common musculoskeletal condition that affects a large portion of the population. It is not known if qigong affects neck pain. The purpose of this review is to systematically review the effects of qigong in subjects with neck pain.

METHODS

A systematic review of literature indexed in the following databases: PubMed, Medline, CINAHL, Physiotherapy Evidence Database, and SportsDiscus, was conducted and methodologically graded using the Physiotherapy Evidence Database Scale (PEDro).

RESULTS

Five studies satisfied criteria and were included in this review. The majority of included studies found that qigong had a significant effect on neck pain or disability (95% CI). Qigong was not generally more effective than exercise therapy groups.

CONCLUSION

The findings of this systematic review indicate that qigong might have a beneficial effect in some individuals with neck pain, although not necessarily more effective than therapeutic exercise.