Core outcome measurement instruments for clinical trials in nonspecific low back pain

Efficacy of a Tumor Necrosis Factor Inhibitor in Chronic Low-Back Pain With Modic Type 1 Changes: A Randomized Controlled Trial

OBJECTIVE

The efficacy of tumor necrosis factor inhibitors for treating chronic low-back pain with Modic changes is uncertain. This study investigated the superiority of infliximab over placebo in patients with Modic type 1 changes.

METHODS

In this multicenter, randomized, triple-blind, placebo-controlled trial, patients aged 18 to 65 years with moderate to severe chronic low-back pain and Modic type 1 changes were enrolled from five Norwegian public hospitals between January 2019 and October 2022. Participants were randomly assigned to four intravenous infusions of 5 mg/kg infliximab or placebo. The primary outcome was difference in change in the Oswestry Disability Index (ODI) score from baseline to five months. Secondary outcomes included changes in low-back pain intensity, disability, and health-related quality of life. A linear mixed model was used for efficacy analyses.

RESULTS

A total of 128 patients (mean age 43 years, 65.6% women) participated (64 in each group). All patients who received at least one dose of the allocated infusion were included in the primary analyses. The average ODI score (±SD) change was -7.0 (±9.7) in the group who received infliximab and -6.4 (±10.4) in the group who received placebo. The difference in the ODI score change between the two groups was 1.3 ODI points (95% confidence interval -2.1 to 4.6, P = 0.45). Analyses showed no effect of infliximab compared to placebo on secondary outcomes. Adverse event rates were similar between groups.

CONCLUSION

Infliximab did not demonstrate superiority over placebo in reducing pain-related disability in patients with moderate to severe chronic low-back pain with Modic type 1 changes at five months.

Ageing and higher BMI explain movement control impairment distinctly better than chronic pain and its contributing factors: A cross-sectional study of 161 subjects with chronic low back pain and 42 pain-free controls

BackgroundAssessment, diagnosis, and treatment of motor control impairments are among the most widely implemented management strategies for chronic low back pain (CLBP). Low back movement control tests described by Luomajoki et al. are reliable and valid for assessing the presence and severity of motor control impairment. However, very little is known about the importance of demographic and well-established CLBP contributing factors in explaining the presence and severity of any type of motor control impairment.ObjectiveThe study objectives were to evaluate the associations of the presence and the severity of movement control impairment with age, gender, BMI, CLBP and its intensity and duration, postural stability, self-reported central sensitization, kinesiophobia, and CLBP-related disability with logistic and ordinal regressions and Wald chi-squared tests.MethodsThis cross-sectional study included 161 subjects with CLBP and 42 pain-free controls. The study was carried out in single private chiropractic clinic.ResultsHigher age and BMI were distinctly greater associated with a higher presence and severity of movement control impairment compared to the pain-related factors, namely the CLBP or its intensity or duration, central sensitization, kinesiophobia, and CLBP-related disability.ConclusionsResults highlight the importance of considering demographic factors, such as age and BMI, when interpreting motor control impairment findings. Accordingly, the findings challenge the validity of testing motor control impairment in the management of CLBP.

A core outcome set of measurement instruments for assessing effectiveness and efficacy of perioperative pain management: results of the international IMI-PainCare PROMPT Delphi consensus process

BACKGROUND

Effective perioperative pain management is crucial to prevent patient suffering, delayed recovery, chronic postsurgical pain, and long-term opioid use. However, the heterogeneous use of outcomes in studies complicates evidence synthesis and might not accurately reflect the experiences of individual patients. We initiated a consensus process to establish a core outcome set (COS) of patient-reported outcome measures (PROMs) in postoperative pain, building upon the earlier consensus on a COS of domains.

METHODS

Potential PROMs were identified via systematic literature searches for the domains pain intensity (with subdomains at rest and during activity), physical function, self-efficacy, and adverse events, followed by appraisal of psychometric properties according to the COnsensus-based Standards for the selection of health Measurement INstruments methodology. Then, a consensus meeting was convened, followed by a Delphi process with an international, multiprofessional panel of stakeholders, including those with lived experience. A conclusive consensus meeting approved the final COS of PROMs.

RESULTS

The final COS consists of one unidimensional numerical rating scale for assessing pain intensity on average, worst pain intensity, pain intensity at rest, and procedure-specific pain intensity during activity; one unidimensional scale for pain interfering with activities in bed; one procedure-specific scale for assessing physical function; the IMI-PainCare PROMPT adaptation of the Arthritis Self-Efficacy Scale for assessing self-efficacy; and the IMI-PainCare PROMPT adaptation of the Opioid-Related Symptom Distress Scale for assessing adverse events.

CONCLUSIONS

Comprehensive use of a core outcome set will help harmonise outcome assessment, facilitate comparisons between studies, promote patient-centred research, and improve postoperative pain care.

A Quasi-Experimental Controlled Study to Evaluate the Effects of a Kinesiologic Approach-The Canali Postural Method-To Posture Reprogramming for Non-Specific Low Back Pain

BACKGROUND/OBJECTIVES

Low back pain (LBP) is the leading cause of disability worldwide, with most cases classified as non-specific low back pain (NSLBP). Various treatments exist, among which are physical exercises that promote flexibility, mobility and core stabilization, improving muscle function and body posture. The Canali Postural Method (CPM) is a kinesiological method that offers a personalized approach to postural reprogramming. This study compares the effects of the CPM and generic exercises in individuals with NSLBP.

METHODS

Subjects with NSLBP were engaged in a four-week intervention either based on a CPM reprogramming phase (CPM group) or generic exercises for the control group (CG). The CPM group underwent an assessment phase to identify the possible musculoskeletal causes of compensatory postural arrangements. The functional disability and pain level were assessed before, immediately after and 3 months post-intervention in both groups. Data were analyzed using repeated measures ANOVA.

RESULTS

Thirty-five subjects per group participated, with the CPM group averaging 38.6 ± 10.1 years and the CG 40.2 ± 12.1 years. The CPM group experienced significantly greater pain relief both immediately post-intervention and at the 3-month follow-up (p < 0.001). While the disability perception decreased in both groups, the CPM group showed superior improvement at the 3-month follow-up (p < 0.001).

CONCLUSIONS

The CPM represents promise for enhancing motor control and quality of life, suggesting potential benefits for other musculoskeletal issues. Future research should explore its broader applications and underlying physiological mechanisms.

Benefits and harms of exercise therapy and physical activity for low back pain: An umbrella review

PURPOSE

The purpose of this umbrella review is to synthesize the evidence from systematic reviews on the benefits and harms of exercise therapy and physical activity (PA) for the secondary prevention and management of low back pain (LBP).

METHODS

An umbrella review was conducted to evaluate the effectiveness of exercise therapy and PA in the management and secondary prevention of LBP. A systematic search was performed in Medline via Ovid, CINAHL, Scopus, Web of Science, Cochrane Database of Systematic Reviews, and Physiotherapy Evidence Database (PEDro), including reference lists of relevant reviews, covering studies published between January 2010 and May 20, 2024. Eligible studies were systematic reviews of randomized controlled trials and observational studies, with or without meta-analyses. The primary outcome for secondary prevention was LBP recurrence, while for management, primary outcomes included pain intensity and disability, with adverse events as secondary outcomes. Data were extracted across immediate, short-term, intermediate, and long-term follow-up periods. The GRADE framework was used to assess the certainty of evidence, and the AMSTAR tool was applied by 2 independent reviewers (JC, QL, and/or DXMW) to evaluate the quality of the included reviews. The study was prospectively registered on the Open Science Framework (OSF) (registration DOI: https://doi.org/10.17605/OSF.IO/9P).

RESULTS

A total of 70 systematic reviews were included, 43 with meta-analyses, 7 with network meta-analyses, and 20 without meta-analyses. Six (out of 10) reviews with meta-analyses for secondary prevention indicated a small benefit from general exercises and leisure-time PA (low-to-moderate certainty). For LBP management, 35 (out of 36) reviews reported that exercise therapies such as Pilates, motor control, mixed exercise, Tai Chi, water-based exercises, and yoga showed small beneficial effects on pain and disability compared to minimal intervention mainly in the short-term (low-to-moderate certainty). Seven network meta-analyses favored motor control and Pilates over other forms of exercise to reduce pain (low certainty). Adverse events were reported in less than 31% of the reviews, predominantly involving post-exercise soreness and temporary increases in pain, mainly in yoga-related studies. Adverse events were considered minor, and no serious adverse events were reported.

CONCLUSION

There is low-to-moderate certainty that exercise therapy and leisure-time PA are beneficial for improving pain and preventing the recurrence of LBP. However, evidence on the potential harms of these interventions is limited, and adverse events related to exercise and PA remain under-investigated.

Collision avoidance behaviours in chronic non-specific low back pain participants: A prospective cohort study

OBJECTIVE

Chronic non-specific low back pain (cNSLBP) is a leading cause of disability, influenced by bio-psycho-social factors. However, its impact on everyday activities such as navigating streets and interacting with other pedestrians remains underexplored. This study aimed to assess the effect of cNSLBP on perceptual-motor processes in a pedestrian crossing task, focusing on 1) collision avoidance behaviours, 2) the walker's role in avoiding collisions, and 3) the influence of pain perception.

METHODS

Seventeen asymptomatic adults (AA, 11 females, 46.4 ± 12.8 years) and seventeen cNSLBP participants (10 females, 47.9 ± 12.7 years) performed a task involving crossing paths at a 90° angle with another walker. Participants interacted in three groups pairings: AA-AA, AA-cNSLBP, and cNSLBP-cNSLBP. Key metrics included crossing order inversion, collision risk threshold informing movement adaptation, crossing distance, and the walker's contribution (speed/orientation).

RESULTS AND DISCUSSION

No significant differences were observed between groups for the collision risk threshold (≈0.93 m) or crossing distance (≈0.8 m). However, cNSLBP participants exhibited distinct avoidance strategies, especially in cNSLBP-cNSLBP interactions, which showed more frequent inversions. When crossing first, cNSLBP participants contributed less, whereas when crossing second, they contributed more, primarily by adjusting their speed. A significant negative correlation emerged between depression scores and the level of contribution when cNSLBP participants crossed second.

CONCLUSION

These findings suggest that pain perception may influence collision avoidance behaviours. Further research, potentially incorporating virtual reality, is needed to control environmental factors and deepen our understanding of these interactions.

Combining procedural and behavioral treatments for chronic low back pain: A pilot feasibility randomized controlled trial

BACKGROUND

Individual treatments for chronic low back pain (CLBP) have small magnitude effects. Combining different types of treatments may produce larger effects.

OBJECTIVE

To (1) assess feasibility of conducting a factorial randomized controlled trial of these treatments; and (2) estimate individual and combined treatment effects of (a) lumbar radiofrequency ablation (LRFA) of the dorsal ramus medial branch nerves (vs. a simulated LRFA control procedure) and (b) Activity Tracker-Informed Video-Enabled Cognitive Behavioral Therapy program for CLBP (AcTIVE-CBT) (vs. an educational control treatment) on back-related disability at 3 months post-randomization.

METHODS

Participants (n = 13) were randomized in a 1:1:1:1 ratio in a 2 × 2 factorial randomized controlled trial. Feasibility goals included an enrollment proportion ≥ 30%, a randomization proportion ≥ 80%, and a ≥ 80% proportion of randomized participants completing the 3-month Roland-Morris Disability Questionnaire (RMDQ) primary outcome end point. An intent-to-treat analysis was used.

RESULTS

The enrollment proportion was 62%, the randomization proportion was 81%, and all randomized participants completed the primary outcome. Though not statistically significant, there was a beneficial, moderate-magnitude effect of LRFA versus control on 3-month RMDQ (-3.25 RMDQ points [95% confidence interval [CI], -10.18 to 3.67]). There was a significant, beneficial, large-magnitude effect of AcTIVE-CBT versus control (-6.29 [95% CI, -10.97 to -1.60]). Though not statistically significant, there was a beneficial, large effect of LRFA+AcTIVE-CBT versus control (-8.37 [95% CI: -21.47, 4.74]).

CONCLUSION

We conclude that it is feasible to conduct a randomized controlled trial combining procedural and behavioral treatments for CLBP.

CLINICALTRIALS

gov Registration: https://clinicaltrials.gov/ct2/show/NCT03520387.

Group-based exercise reduces pain and disability and improves other outcomes in older people with chronic non-specific low back pain: the ESCAPE randomised trial

QUESTION

In older people with chronic non-specific low back pain (CNSLBP), what is the effect of a group-based exercise protocol compared with a waitlist control on pain intensity, disability, global perceived effect, frequency of falls, fear of falling and physical activity?

DESIGN

Randomised trial with concealed allocation and intention-to-treat analysis.

PARTICIPANTS

One hundred and twenty people aged ≥ 60 years with CNSLBP.

INTERVENTIONS

Participants were allocated to undertake 1-hour group exercise sessions, three times per week for 8 weeks or to a waitlist control.

OUTCOME MEASURES

The primary outcomes were pain intensity and disability. Secondary outcomes were the global perceived effect, frequency of falls, fear of falling and physical activity level. Data were collected at baseline, 8 weeks, 5 months and 12 months after randomisation.

RESULTS

Compared with control, group-based exercise reduced pain intensity on a 0-to-10 scale (MD -2.0, 95% CI -2.8 to -1.3) and disability on the 0-to-24 Roland-Morris Disability Questionnaire (MD -3.4, 95% CI -4.7 to -2.1). Group-based exercise also led to higher ratings of global perceived effect sustained through to 12 months and higher levels of physical activity at week 8. The effect on fear of falling was clearly negligible.

CONCLUSION

Group-based exercise has long-term benefits for pain intensity, disability and global perceived effect, with at least a short-term benefit for physical activity. Group-based exercise can be safely implemented in primary healthcare settings to manage CNSLBP in older people.

REGISTRATION

RBR-9j5pqs.

Non-pharmacological and non-surgical treatments for low back pain in adults: an overview of Cochrane reviews

BACKGROUND

Low back pain (LBP) is a significant public health issue due to its high prevalence and associated disability burden. Clinical practice guidelines recommend non-pharmacological/non-surgical interventions for managing pain and function in people with LBP.

OBJECTIVES

To provide accessible, high-quality evidence on the effects of non-pharmacological and non-surgical interventions for people with LBP and to highlight areas of remaining uncertainty and gaps in the evidence regarding the effects of these interventions for people with LBP.

METHODS

We searched the Cochrane Database of Systematic Reviews from inception to 15 April 2023, to identify Cochrane reviews of randomised controlled trials testing the effect of non-pharmacological/non-surgical interventions, unrestricted by language. Major outcomes were pain intensity, function and safety. Two authors independently assessed eligibility, extracted data and assessed the quality of the reviews using AMSTAR 2 (A MeaSurement Tool to Assess Systematic Reviews) and the certainty of the evidence using GRADE. The primary comparison was placebo/sham.

MAIN RESULTS

We included 31 Cochrane reviews of 644 trials that randomised 97,183 adults with LBP. We have high confidence in the findings of 19 reviews, moderate confidence in the findings of two reviews, and low confidence in the findings of 10 reviews. We present results for non-pharmacological/non-surgical interventions compared to placebo/sham or no treatment/usual care at short-term (≤ three months) follow-up. Placebo/sham comparisons Acute/subacute LBP Compared to placebo, there is probably no difference in function (at one-week follow-up) for spinal manipulation (standardised mean difference (SMD) -0.08, 95% confidence interval (CI) -0.37 to 0.21; 2 trials, 205 participants; moderate-certainty evidence). Data for safety were reported only for heated back wrap. Compared to placebo, heated back wrap may result in skin pinkness (6/128 participants versus 1/130; 2 trials; low-certainty evidence). Chronic LBP Compared to sham acupuncture, acupuncture probably provides a small improvement in function (SMD -0.38, 95% CI -0.69 to -0.07; 3 trials, 957 participants; moderate-certainty evidence). Compared to sham traction, there is probably no difference in pain intensity for traction (0 to 100 scale, mean difference (MD) -4, 95% CI -17.7 to 9.7; 1 trial, 60 participants; moderate-certainty evidence). Data for safety were reported only for acupuncture. There may be no difference between acupuncture and sham acupuncture for safety outcomes (risk ratio (RR) 0.68, 95% CI 0.42 to 1.10; I2 = 0%; 4 trials, 465 participants; low-certainty evidence). No treatment/usual care comparisons Acute/subacute LBP Compared to advice to rest, advice to stay active probably provides a small reduction in pain intensity (SMD -0.22, 95% CI -0.02 to -0.41; 2 trials, 401 participants; moderate-certainty evidence). Compared to advice to rest, advice to stay active probably provides a small improvement in function (SMD -0.29, 95% CI -0.09 to -0.49; 2 trials, 400 participants; moderate-certainty evidence). Data for safety were reported only for massage. There may be no difference between massage and usual care for safety (risk difference 0, 95% CI -0.07 to 0.07; 1 trial, 51 participants; low-certainty evidence). Chronic LBP Compared to no treatment, acupuncture probably provides a medium reduction in pain intensity (0 to 100 scale, mean difference (MD) -10.1, 95% CI -16.8 to -3.4; 3 trials, 144 participants; moderate-certainty evidence), and a small improvement in function (SMD -0.39, 95% CI -0.72 to -0.06; 3 trials, 144 participants; moderate-certainty evidence). Compared to usual care, acupuncture probably provides a small improvement in function (MD 9.4, 95% CI 6.15 to 12.65; 1 trial, 734 participants; moderate-certainty evidence). Compared to no treatment/usual care, exercise therapies probably provide a small to medium reduction in pain intensity (0 to 100 scale, MD -15.2, 95% CI -18.3 to -12.2; 35 trials, 2746 participants; moderate-certainty evidence), and probably provide a small improvement in function (0 to 100 scale, MD -6.8, 95% CI -8.3 to -5.3; 38 trials, 2942 participants; moderate-certainty evidence). Compared to usual care, multidisciplinary therapies probably provide a medium reduction in pain intensity (SMD -0.55, 95% CI -0.83 to -0.28; 9 trials, 879 participants; moderate-certainty evidence), and probably provide a small improvement in function (SMD -0.41, 95% CI -0.62 to -0.19; 9 trials, 939 participants; moderate-certainty evidence). Compared to no treatment, psychological therapies using operant approaches probably provide a small reduction in pain intensity (SMD -0.43, 95% CI -0.75 to -0.11; 3 trials, 153 participants; moderate-certainty evidence). Compared to usual care, psychological therapies (including progressive muscle relaxation and behavioural approaches) probably provide a small reduction in pain intensity (0 to 100 scale, MD -5.18, 95% CI -9.79 to -0.57; 2 trials, 330 participants; moderate-certainty evidence), but there is probably no difference in function (SMD -0.2, 95% CI -0.41 to 0.02; 2 trials, 330 participants; moderate-certainty evidence). It is uncertain whether there is a difference between non-pharmacological/non-surgical interventions and no treatment/usual care for safety (very low-certainty evidence).

AUTHORS' CONCLUSIONS

Spinal manipulation probably makes no difference to function compared to placebo for people with acute/subacute LBP. Acupuncture probably improves function slightly for people with chronic LBP, compared to sham acupuncture. There is probably no difference between traction and sham traction for pain intensity in people with chronic LBP. Compared to advice to rest, advice to stay active probably reduces pain intensity slightly and improves function slightly for people with acute LBP. Acupuncture probably reduces pain intensity, and improves function slightly for people with chronic LBP, compared to no treatment. Acupuncture probably improves function slightly for people with chronic LBP, compared to usual care. Exercise therapies probably reduce pain intensity, and improve function slightly for people with chronic LBP, compared to no treatment/usual care. Multidisciplinary therapies probably reduce pain intensity, and improve function slightly for people with chronic LBP, compared to usual care. Compared to usual care, psychological therapies probably reduce pain intensity slightly, but probably make no difference to function for people with chronic LBP.

Therapeutic quality of exercise interventions for chronic low back pain: a meta-research study using i-CONTENT tool

OBJECTIVE

To assess the therapeutic quality of exercise interventions delivered in chronic low back pain (cLBP) trials using the international Consensus on Therapeutic Exercise aNd Training (i-CONTENT) tool and its inter-rater agreement.

METHODS

We performed a meta-research study, starting from the trials' arms included in the published Cochrane review (2021) 'Exercise therapy for chronic low back pain'. Two pairs of independent reviewers applied the i-CONTENT tool, a standardised tool designed to ensure the quality of exercise therapy intervention, in a random sample of 100 different exercise arms. We assessed the inter-rater agreement of each category calculating the specific agreement. A percentage of 70% was considered satisfactory.

RESULTS

We included 100 arms from 68 randomised controlled trials published between 1991 and 2019. The most assessed exercise types were core strengthening (n=27 arms) and motor control (n=13 arms). Among alternative approaches, yoga (n=11) and Pilates (n=7) were the most representative. Overall, most exercise interventions were rated as having a low risk of ineffectiveness for patient selection (100%), exercise type (92%), outcome type and timing (89%) and qualified supervisor (84%). Conversely, some items showed more uncertainty: the safety of exercise programmes was rated as 'probably low risk' in 58% of cases, exercise dosage in 34% and adherence to exercise in 44%. The items related to exercise dosage (31%) and adherence (29%) had heterogenous judgements, scoring as high risk of ineffectiveness or probably not done. Among all exercise types, Pilates scored best in all domains. A satisfactory specific agreement for 'low risk category' was achieved in all items, except dosage of exercise (60%) and adherence to exercise (54%).

CONCLUSION

Exercises delivered for patients with cLBP generally demonstrate favourable therapeutic quality, although some exercise modalities may present poor therapeutic quality related to dosage and adherence. While the i-CONTENT judgements generally showed satisfactory specific agreement between raters, disagreements arose in evaluating some crucial items.

Antidepressants for low back pain and spine-related leg pain

BACKGROUND

Antidepressants are commonly used to treat low back pain and spine-related leg pain. However, their benefits and harms are uncertain. This is an update of a 2008 Cochrane review of antidepressants for non-specific low back pain.

OBJECTIVES

To assess the benefits and harms of antidepressants for non-specific low back pain and spine-related leg pain.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, ClinicalTrials.gov, World Health Organization International Clinical Trials Registry Platform, and EU Clinical Trials Register from inception to 14 November 2024.

SELECTION CRITERIA

We included randomised controlled trials that compared antidepressants with placebo, usual care, or no treatment/waiting list. Participants were 18 years of age or older with non-specific low back pain or spine-related leg pain of any duration. We excluded participants with low back pain due to spinal fracture, inflammatory disease, aortic dissection, malignancy, or infection. Primary outcomes were pain intensity and disability, measured at short-term follow-up (> 4 to 14 weeks post-randomisation), and total adverse events. Secondary outcomes were serious adverse events, withdrawals due to adverse events, depressive symptoms, and health-related quality of life.

DATA COLLECTION AND ANALYSIS

Two review authors independently screened records to determine study inclusion, extracted data, and evaluated risk of bias using RoB 1 tool. Where possible, we conducted meta-analyses. We used GRADE to assess the certainty of evidence.

MAIN RESULTS

We included 26 randomised controlled trials. Eighteen studies included 2535 participants with non-specific low back pain, seven studies included 329 participants with spine-related leg pain, and one study included 68 participants with either condition. Most participants had pain lasting more than three months, with a mean duration between 18 months and 20 years. Mean ages ranged from 27 to 59 years. Studies evaluated serotonin and norepinephrine reuptake inhibitors (SNRIs; eight studies), selective serotonin reuptake inhibitors (SSRIs; two studies), tricyclic antidepressants (TCAs; 14 studies), tetracyclic antidepressants (TeCAs; two studies), or 'other antidepressants' (two studies). All studies were placebo-controlled. Outcomes were measured at short-term follow-up in 73% of studies. All included studies had at least one domain judged at high risk of bias, with 69% at high risk of attrition bias. Non-specific low back pain (benefits) Moderate-certainty evidence demonstrated that SNRIs probably have a small effect on pain intensity (mean difference (MD) (0 to 100 scale) -5.25, 95% confidence interval (CI) -7.17 to -3.34; I2 = 0; 4 studies, 1415 participants) and a trivial effect on disability (MD (0 to 24 scale) -0.91, 95% CI -1.30 to -0.51; I2 = 0; 4 studies, 1348 participants) at short-term follow-up. Low-certainty evidence showed that SSRIs may have little to no effect on pain intensity (MD 1.20, 95% CI -4.90 to 7.30; I2 = 0; 3 studies, 199 participants) and disability (MD -2.20 (0 to 100 scale), 95% CI -8.11 to 3.71; 1 study, 92 participants) at short-term follow-up. Moderate-certainty evidence demonstrated that TCAs probably have little to no effect on pain intensity (MD -2.00, 95% CI -7.25 to 3.24; I² = 31%; 4 studies, 417 participants), but probably have a small effect on disability (MD (0 to 24 scale) -1.76, 95% CI -2.70 to -0.82; I2 = 0; 3 studies, 330 participants) at short-term follow-up. The effects of TeCAs (MD -4.50, 95% CI -17.59 to 8.59; 1 study, 52 participants) and other antidepressants (MD -5.40, 95% CI -23.08 to 12.28; 1 study, 39 participants) on pain intensity at short-term follow-up are unclear (very low-certainty evidence). No studies assessed the effects of TeCAs or other antidepressants on disability. Spine-related leg pain (benefits) The effects of SNRIs on pain intensity (MD -46.10, 95% CI -89.29 to -2.91; 1 study, 11 participants) and disability (MD (0 to 100 scale) -4.40, 95% CI -20.25 to 11.45; 1 study, 11 participants) at short-term follow-up are very uncertain (very low-certainty evidence). Low-certainty evidence showed TCAs may have a large effect on pain intensity at short-term follow-up (MD -23.00, 95% CI -32.12 to -13.88; 1 study, 60 participants), and a moderate effect on disability (MD (0 to 100 scale) -13.00, 95% CI -19.42 to -6.58; 1 study, 60 participants). There were no studies that assessed the effects of SSRIs, TeCAs, or other antidepressants in people with spine-related leg pain. Non-specific low back pain and spine-related leg pain (harms) Moderate-certainty evidence demonstrated that SNRIs probably increase the risk of adverse events (risk ratio (RR) 1.17, 95% CI 1.07 to 1.27; I2 = 0%; 5 studies, 1510 participants), but it is unclear whether they increase the risk of serious adverse events (Peto odds ratio (OR) 1.75, 95% CI 0.79 to 3.89; 5 studies, 1510 participants; very low-certainty evidence). It is unclear whether TCAs increase the risk of adverse events (RR 1.76, 95% CI 0.79 to 3.90; 7 studies, 474 participants; low-certainty evidence) or serious adverse events (Peto OR 6.64, 95% CI 0.41 to 106.72; I² = 0%; 1 study, 142 participants; very low-certainty evidence). It is unclear whether SSRIs (RR 1.83, 95% CI 0.14 to 24.19; I² = 95%; 2 studies, 107 participants; very low-certainty evidence) or TeCAs increase the risk of adverse events (RR 0.93, 95% CI 0.79 to 1.09; 1 study, 52 participants; very low-certainty evidence). No studies assessed the risk of serious adverse events for these classes. No studies measured total adverse events for other antidepressants. It is unclear whether other antidepressants increase the risk of serious adverse events (Peto OR 0.90, 95% CI 0.16 to 4.96; 1 study, 42 participants; very low-certainty evidence).

AUTHORS' CONCLUSIONS

We found that in people with non-specific low back pain, SNRIs probably have small effects on pain intensity, trivial effects on disability, and are probably associated with adverse effects. TCAs probably do not reduce low back pain intensity, but may have a small effect on disability. The effects of antidepressants on spine-related leg pain are uncertain, though SNRIs and TCAs might be prioritised over other classes for future investigations. Evidence for the safety of SSRIs, TCAs, TeCAs, and other antidepressants in non-specific low back pain and spine-related leg pain remains unclear.

Measurement properties of self-reported outcome measures for older adults with nonspecific low back pain: a systematic review

OBJECTIVE

To summarise the measurement properties of patient-reported outcome measures (PROMs) for older adults with nonspecific low back pain.

METHODS

Eight databases were searched from inception to January 2024. Two independent reviewers conducted article screening, data extraction, risk of bias assessments, evaluations of measurement properties of PROMs, syntheses of quality of evidence and forming recommendation levels using relevant checklists and assessment tools.

RESULTS

Ten PROMs were identified from 12 included studies. The Functional Rating Index, Oswestry Disability Index, Roland Morris Disability Questionnaire and Quebec Back Pain Disability Scale demonstrated the highest recommendation (category A: PROM most suitable) for evaluating pain-related functional limitation or pain intensity in older adults with acute, subacute or chronic nonspecific low back pain. The Pain Response to Activity and Positioning questionnaire obtained a category A recommendation for making a differential diagnosis of chronic nonspecific low back pain in older adults. The 36-Item World Health Organization Disability Assessment Schedule 2.0 was considered promising (category B: PROM recommended) for assessing physical functioning, while the Back Believe Questionnaire, Catastrophizing Avoidance Scale D-65+, Pain Catastrophizing Scale and Psychological Inflexibility in Pain Scale obtained category B recommendation for evaluating negative thoughts in this population, although further validation is warranted.

CONCLUSIONS

This systematic review identified suitable PROMs for assessing physical function in older adults with nonspecific low back pain, but more studies are needed to evaluate the measurement properties of questionnaires on other outcome domains in this population.

Difference in movement coordination and variability during Five-Repetition Sit-to-Stand between people with and without Chronic Low back pain

Chronic low back pain (CLBP) affects people's activities of daily living, including sitting down and standing up. Movement pattern analyses during five-repetition sit-to-stand (5RSTS) may allow CLBP status differentiation. 44 CLBP and 22 asymptomatic participants performed 5RSTS in this study, with their trunk and lower limb movements recorded using 3-dimensional motion capture system. Joint active range of motion, joint maximal velocity, joint and segment continuous relative phase (CRP) were analyzed. Mean absolute relative phase (MARP) and deviation phase (DP) variables were calculated in CRP analysis. Between-group kinematic variables were compared using One-way Multivariate Analysis of Covariance (MANCOVA). Significant variables from different methods were compared using binomial logistic regression to assess accuracy for CLBP status. Results showed that segmental CRP is the most sensitive method for CLBP assessment, with the CLBP group femur-to-pelvis and lumbar-to-pelvis movement coordination was more in-phase MARP (F(8,56) = 7.127, p < 0.001, Wilks'Λ = 0.441, ηp2 = 0.559) and stable DP (F(8,56) = 4.585, p < 0.001, Wilks'Λ = 0.551, ηp2 = 0.449) during both standing up and sitting down. Utilizing CRP variables yielded Nagelkerke R2 = 0.708 and overall correct classification of 93 % for CLBP status. Individuals with CLBP exhibited distinct movement coordination and stability, which should be considered in CLBP assessments and intervention. Variable combination from the segment analysis was found to be the most predictive to CLBP status, and significantly different to the results obtained from joint analysis, highlighting the necessity for CRP method standardization in future studies.

Baseline Functional Connectivity of the Mesolimbic, Salience, and Sensorimotor Systems Predicts Responses to Psychological Therapies for Chronic Low Back Pain With Comorbid Depression: A Functional MRI Study

INTRODUCTION

Chronic low back pain (CLBP) is a prevalent and debilitating condition. Cognitive behavioral therapy (CBT) can improve coping mechanisms for CLBP and pain-related outcomes. However, the mechanisms by which they do so remain undetermined. We explored the neural correlates of CLBP symptoms and CBT action using functional magnetic resonance imaging (fMRI) in women with CLBP and comorbid depression.

METHODS

Forty individuals underwent fMRI followed by 8 weeks of either treatment as usual (TAU) or one of two CBT in addition to TAU: acceptance and commitment therapy (ACT) or behavioral activation treatment for depression (BATD). Pain intensity, depression, psychological inflexibility, and pain catastrophizing scores were obtained at baseline and follow-up. Functional connectivity (FC) patterns of the salience network (SN), sensorimotor network (SMN), and the mesolimbic pathway (MLP), derived from resting-state fMRI examination were correlated with both baseline and delta (baseline-follow-up) pain-related psychological measures.

RESULTS

Individuals receiving ACT and BATD showed reduced depression, psychological inflexibility, and pain catastrophizing. Strong baseline connectivity of the SN and SMN corresponded with higher pain intensity, but strong connectivity of the MLP and precuneus corresponded with lower pain intensity. Pain intensity changes correlated with mesolimbic-salience connectivity following ACT, and with sensorimotor connectivity following BATD. Specifically, stronger baseline FC between the MLP and posterior insula predicted greater pain intensity reduction with ACT, while stronger FC between the SMN and secondary somatosensory cortex predicted greater pain intensity reduction with BATD. FC of the SN correlated with changes in psychological inflexibility across both therapies.

CONCLUSIONS

We illustrate the potential of FC as a biomarker of CLBP plus depression and the response to CBT. Our data suggest ACT and BATD have differing underlying brain mechanisms. These findings indicate that FC biomarkers could guide personalized treatment, improving individual outcomes.

Gamified delivery of at-home rehabilitation for individuals with nonspecific low back pain: a randomized controlled trial

PURPOSE

To measure the change in pain and disability during and after a 6-week gamified delivery of home exercise compared to a take-home packet.

MATERIALS AND METHODS

A 6-week at-home exercise protocol included participants randomly allocated to a gamified delivery group or packet group. The exercise protocol included the plank, side plank, foot elevated side plank, dead bug, and bird dog completed until discontinuation. The gamified delivery group received on-demand exercise videos and weekly exercise duration leaderboards. The packet group received a take-home packet.

RESULTS

Forty participants were randomized into a packet group and leaderboard group, and 30 participants completed the study. Disability was significantly lower at 6-weeks (11.29 ± 9.81%) compared to baseline (15.93 ± 11.65%) in the packet group (χ2(2) =10.89, Z= -3.163, p=.002, r=.708). Percent disability was significantly lower at 6-weeks (8.00 ± 5.91%) compared to baseline (13.01 ± 7.17%) in the gamified delivery group (χ2(2) =13.235, Z= -3.399, p= <.001, r= -0.760). Worst pain was higher at baseline (7.05 ± 1.61%) than at 6-weeks (5.75 ± 1.68%) in the packet group (χ2(2) =8.067, Z = 2.760, p=.006, r= -0.617). Worst pain was higher at baseline (6.90 ± 1.33%) than at 6-weeks (5.24 ± 2.38%) in the gamified delivery group (χ2(2) =6.250, Z= -2.810, p=.005, r= -0.628). No significant difference in the change of disability from baseline to 6 weeks was found between groups (p=.483).

CONCLUSIONS

Core exercises completed until failure may improve disability and pain at 6-weeks and positively influence perceived patient improvement.Registry: Clinicaltrials.gov; Registration number: NCT05573932.

The PainSMART project: Protocol for a research program on effectiveness, mechanisms of effect and patient-practitioner experiences of the PainSMART-strategy as an adjunct to usual primary care physiotherapy management for musculoskeletal pain

BACKGROUND

Musculoskeletal pain (MSKP) disorders entail a significant burden for individuals and healthcare systems. The PainSMART-strategy has been developed aiming to reduce divergences between patients and healthcare practitioners in their understanding of MSKP by providing a shared basis for communication and to facilitate patients' self-management of MSKP. The objective of the PainSMART-project is to evaluate the effects of the PainSMART-strategy as an adjunct to usual physiotherapy management compared to usual physiotherapy management alone.

METHODS

The PainSMART-project is a research program with a collective suite of studies utilising mixed methods, centred around a randomised controlled trial (ClinicalTrials.gov NCT06187428). Subjects: Adults (18 years or older) seeking primary care for MSKP who are triaged and booked for an initial physiotherapy consultation at five primary care physiotherapy departments within the Swedish public healthcare regions of Östergötland and Jönköping. A total of 490 subjects will be randomised to receive one of two possible interventions.

INTERVENTIONS

Both groups will receive usual physiotherapy management for benign MSKP. The intervention group will also receive the PainSMART-strategy consisting of an educational film, reflection and reinforcement of the film's key messages prior to the initial physiotherapy consultation and a patient-practitioner discussion based on the film.

OUTCOME

The primary outcome is 1) between group mean change over time from baseline to 24 hours post initial physiotherapy consultation and baseline to 3 months regarding self-reported average pain intensity and pain self-efficacy. Secondary outcomes include similar measurements for MSKP illness perception, reassurance of benign nature, pain coping, physical activity, analgesic medication use, sick leave, healthcare use and direct healthcare costs. Physiotherapist and patient reported experience measures and qualitative evaluation of the effects of the PainSMART-strategy on communication at the initial physiotherapy consultation will also be explored.

DISCUSSION

This study will investigate potential added effects of PainSMART-strategy upon usual primary care physiotherapy for MSKP.

Graded activity for acute and subacute low back pain

OBJECTIVES

This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To assess the benefits and harms of graded activity compared to placebo, sham, or no treatment, on pain and function in adults with acute and subacute non-specific low back pain.

Healthy Lifestyle Care vs Guideline-Based Care for Low Back Pain: A Randomized Clinical Trial

Importance

An unhealthy lifestyle is believed to increase the development and persistence of low back pain, but there is uncertainty about whether integrating support for lifestyle risks in low back pain management improves patients' outcomes.

Objective

To assess the effectiveness of the Healthy Lifestyle Program (HeLP) compared with guideline-based care for low back pain disability.

Design, Setting, and Participants

This superiority, assessor-blinded randomized clinical trial was conducted in Australia from September 8, 2017, to December 30, 2020, among 346 participants who had activity-limiting chronic low back pain and at least 1 lifestyle risk (overweight, poor diet, physical inactivity, and/or smoking), referred from hospital, general practice, and community settings. Statistical analysis was performed from January to December 2021.

Interventions

Participants were block randomized to the HeLP intervention (n = 174; 2 postrandomization exclusions) or guideline-based physiotherapy care (n = 172), stratified by body mass index, using a concealed function in REDCap. HeLP integrated healthy lifestyle support with guideline-based care using physiotherapy and dietetic consultations, educational resources, and telephone-based health coaching over 6 months.

Main Outcomes and Measures

The primary outcome was low back pain disability (Roland Morris Disability Questionnaire [RMDQ] score; 0-24 scale, where higher scores indicate greater disability) at 26 weeks. Secondary outcomes were weight, pain intensity, quality of life, and smoking. Analyses were performed by intention to treat. We estimated the complier average causal effect (CACE) as sensitivity analyses.

Results

The sample of 346 individuals (mean [SD] age, 50.2 [14.4] years; 190 female participants [55%]) had a baseline mean (SD) RMDQ score of 14.7 (5.4) in the intervention group and 14.0 (5.5) in the control group. At 26 weeks, the between-group difference in disability was -1.3 points (95% CI, -2.5 to -0.2 points; P = .03) favoring HeLP. CACE analysis revealed clinically meaningful benefits in disability among compliers, favoring HeLP (-5.4 points; 95% CI, -9.7 to -1.2 points; P = .01). HeLP participants lost more weight (-1.6 kg; 95% CI, -3.2 to -0.0 kg; P = .049) and had greater improvement in quality of life (physical functioning score; 1.8, 95% CI, 0.1-3.4; P = .04) than control participants.

Conclusions and Relevance

Combining healthy lifestyle management with guideline-based care for chronic low back pain led to small improvements in disability, weight, and quality of life compared with guideline-based care alone, without additional harm. Targeting lifestyle risks in the management of chronic low back pain may be considered safe and may offer small additional health benefits beyond current guideline-based care.

Trial Registration

http://anzctr.org.au Identifier: ACTRN12617001288314.

Clarifying the characteristics of interprofessional rehabilitation programs for adults with chronic low back pain: A scoping review

BACKGROUND

Interprofessional rehabilitation programs are recommended by practice guidelines based on their effectiveness in improving health-related quality of life, pain, and function for people with chronic low back pain (CLBP). However, the most appropriate program characteristics are poorly described in the literature.

OBJECTIVE

This scoping review aimed to synthesize the characteristics of interprofessional rehabilitation programs for people living with CLBP.

METHODS

The scoping review was guided by the framework developed by Arksey and O'Malley, which has been further enhanced by the Joanna Briggs Institute (JBI). Electronic databases, including Ovid MEDLINE, EMBASE, CINAHL, PsycINFO, SCOPUS, PubMed, Web of Science, and Cochrane Library, were searched to identify relevant published studies.

RESULTS

Out of 13370 articles identified through our search, seventy-nine studies fulfilled our eligibility criteria. In the majority of the studies (n = 75), interprofessional rehabilitation programs for people with CLBP consisted of two or more of the following interventions: physical activity and exercise (n = 68), education (n = 61), psychotherapy (n = 52), and vocational support/advice (n = 31). In a few studies describing the underlying theories, the biopsychosocial model, which emphasizes the need to address social, psychological, and physical components in the management of CLBP, was the most often cited theoretical framework.

CONCLUSION

There is substantial variation in how interprofessional rehabilitation programs for people with CLBP are conceptualized and evaluated. A detailed description of the intervention evaluated, and the underlying theoretical frameworks was also lacking in most studies. We recommend the use of a consistent term and components aligned with practice guidelines.

Well-being in pain questionnaire: A novel, reliable, and valid tool for assessment of the personal well-being in individuals with chronic low back pain

BACKGROUND

Well-being is closely related to health, recovery, and longevity. Chronic musculoskeletal pain (CMP) is a major health challenge in the general population, which can have a negative effect on subjective well-being. The ability to identify patients' well-being protective factors, including psychological, social, and lifestyle components, can help guide the therapeutic process in the management of CMP. Recognizing the absence of a dedicated well-being questionnaire, tailored specifically for CMP populations, an 11-item well-being in pain questionnaire (WPQ) was developed.

OBJECTIVES

The objectives were to develop a valid and reliable patient-reported measure of personal pain-specific well-being protective factors and to evaluate its psychometric properties, including (i) internal consistency; (ii) known-group validity between subjects with chronic low back pain (CLBP) and healthy pain-free controls; (iii) convergent validity between the WPQ and measures of health-related quality of life, catastrophizing, sleep quality, symptoms of central sensitization, and anxiety; and (iv) structural validity with exploratory factor analysis.

DESIGN

This is a cross-sectional validation study.

METHODS

After reviewing previous CMP and well-being literature, the novel WPQ items were constructed by expert consensus and target population feedback. The psychometric properties of the WPQ were evaluated in a sample of 145 participants, including 92 subjects with CLBP and 53 pain-free controls.

RESULTS

Feedback from a preliminary group of CMP patients about the relevance, content, and usability of the test items was positive. Internal consistency showed acceptable results (α = 0.89). The assessment of convergent validity showed moderate correlations (≤0.4 or ≥-0.4.) with well-established subject-reported outcome measures. The assessment of structural validity yielded a one-factor solution, supporting the unidimensionality of the WPQ.

CONCLUSIONS

The psychometric results provided evidence of acceptable reliability and validity of the WPQ. Further research is needed to determine the usability of the WPQ as an assessment and outcome tool in the comprehensive management of subjects with CMP.

Comparisons of the effects of psychologically-informed and usual physiotherapy on pain sensitivity in chronic low back pain: an exploratory randomized controlled trial

Introduction

The presence of altered central pain processing and modulation, as well as negative psychological factors, have been suggested to impede recovery in chronic low back pain (CLBP). Psychologically-informed physiotherapy (PiP) aims to specifically address the latter factors-in addition to physical factors-to improve treatment effects. This study aims to determine if the effect of PiP is superior to usual physiotherapy (UP) on pain sensitivity and modulation in participants with CLBP and if changes in these variables were associated with changes in clinical outcomes.

Methods

Forty participants with CLBP were randomly allocated to PiP or UP. Seven physiotherapy sessions over 6 weeks plus a booster session at an 11-week follow-up were delivered. Pressure pain threshold (PPT), temporal summation of pain (TSP), and exercise-induced hypoalgesia were assessed on lumbar, upper, and lower limb sites at baseline and after 6 weeks. Linear mixed models tested if PiP was superior to UP on pain sensitivity/modulation. Linear regressions tested if pain sensitivity/modulation changes were associated with changes in clinical outcomes (pain intensity, physical functioning, symptoms of central sensitization).

Results

PiP was not superior to UP to modulate pain sensitivity/modulation variables. All PPTs increased after 6 weeks regardless of the approach. Lumbar PPT and lumbar and lower limb TSP changes were associated with physical functioning changes.

Conclusion

Although our study suggests that neither approach has a superiority to impact on pain sensitivity, both approaches elicited widespread hypoalgesia. Future powered trials should verify if pain sensitivity can be a mediator of physical functioning improvement, as suggested by our results.

DREAM: an adaptive, randomised, placebo-controlled trial of duloxetine for reducing leg pain in people with chronic sciatica-trial protocol

INTRODUCTION

Sciatica is a debilitating condition that often becomes chronic, and for which there are few effective treatment options. Treatments such as the anti-depressant duloxetine have shown promise, but the evidence is inconclusive. We are describing a high quality, definitive trial to investigate the efficacy, safety and cost-effectiveness of duloxetine in chronic sciatica.

METHODS AND ANALYSIS

The duloxetine for chronic sciatica (DREAM) trial is a randomised, superiority, parallel-group, placebo-controlled, triple-blinded (participant, clinician, assessor) trial with an adaptive group sequential design investigating the efficacy and safety of duloxetine in participants with chronic sciatica of at least 3 months duration. Participants will be randomised at a 1:1 ratio to duloxetine or placebo. 332 participants will be recruited on presentation to general practices, specialist clinics and hospital emergency departments or from hospital in-patient wards and from the community. In the active treatment group, participants will receive duloxetine 60 mg per day for 12 weeks, including 1 week of titration at 30 mg/day. The treatment phase will be followed by a 2-week tapering phase where they will receive duloxetine 30 mg/day. Participants will be followed-up for 1 year, with outcomes being measured 4, 8, 12, 16, 26, and 52 weeks post-randomisation. The primary outcome is leg pain intensity at 12 weeks post-randomisation. Secondary outcomes include back pain intensity, disability, time to recovery, quality of life, depressive and anxiety symptoms, and sleep disturbance. Adverse events will be recorded, and a cost-effectiveness analysis will be conducted.

ETHICS AND DISSEMINATION

Ethical approval has been granted by the University of Sydney Human Research Ethics Committee. Trial results will be disseminated by publications, conference presentations and via the media.

TRIAL REGISTRATION NUMBER

ACTRN12624000919516.

A Systematic Scoping Review of Essential Methodological Elements for Developing a Tool to Improve the Reporting of Consensus Studies in Classification, Diagnostic Criteria, and Guidelines Development

Introduction

A consensus is a general agreement among group members that is pivotal in gathering expert input for classification, diagnostic criteria, and guideline development. However, the absence of established methodological standards presents challenges in conducting and analyzing these studies.

Objective

This scoping review explored the evidence on essential elements in consensus studies to create a list of candidate items for a standardized reporting tool. This tool is intended to improve the critical appraisal and methodological rigor of consensus studies.

Methods

A systematic scoping review was conducted using predetermined criteria for study selecting studies and extracting data. A comprehensive literature search was performed without imposing date restrictions, covering multiple databases, including Medline, Embase, LILACS, SciELO, and up to March 2022. We included only English-language publications and excluded incomplete articles and conference reports. The risk of bias was assessed using the CASP checklist, and the study selection and data extraction were performed independently by two researchers in duplicate.

Results

We identified 8360 references; 20 publications were included for data extraction. The majority (70%) used the Delphi method, and the remainder (30%) employed the modified Delphi method. Inconsistencies in reporting conflicts of interest and consensus timing were observed. Other methodologies, such as RAND/UCLA and Nominal Group Technique were excluded due to methodological limitations. Most studies exhibited a low risk of bias.

Discussion

Our findings underscored the need for more standardization in definitions, methodology, and reporting within consensus studies. To address these gaps, we developed a checklist of key reporting items aimed at improving the planning, execution, and reporting consensus studies. Although the developed checklist requires validation, it offers a practical framework to enhance methodological transparency and reliability.

Conclusion

Deficiencies and variability in consensus methodologies reporting underscore the need for a standardized approach. We propose the adoption of a checklist to strengthen the robustness of consensus studies, supporting advances in classification, diagnostic criteria, and guideline development.

What can I do for my low back pain? The Work In Progress questionnaire!

BACKGROUND

There is growing evidence on Commitment Therapy for people with low back pain (LBP). A self-reported questionnaire is lacking which evaluates commitment by relying on the most recommended actions, the most important core outcome domains, and the most evidenced treatment options.

AIM

To describe the development and psychometric validation of the Work In Progress (WIP) questionnaire.

DESIGN

Development and psychometric validation of the WIP questionnaire in the context of people with LBP, as a means to evaluate Commitment.

SETTING

Outpatient facilities.

POPULATION

People with LBP.

METHODS

The new instrument was created by item generation and selection. Face validity, appropriateness, acceptability and feasibility were investigated. Psychometric testing was carried out in a cross-sectional study and included: 1) exploratory factor analysis; 2) reliability by internal consistency (Cronbach's alpha) and test-retest measurement (Intra-class Correlation Coefficient, ICC2.1); and 3) construct validity by hypothesis testing the correlation of the WIP questionnaire with the Pain Catastrophizing Scale (PCS), the Oswestry Disability Index (ODI), and a pain intensity Numerical Rating Scale (NRS) (Pearson's r correlations).

RESULTS

The WIP questionnaire was successfully developed based on international guidelines and the testing of face validity, appropriateness, acceptability and feasibility were satisfactory. The instrument was administered to 102 people with LBP (39 females, mean age of 49.7±14.6 years [range 20-80], pain median duration of 42.1 weeks [range 3-360]). Factor analysis revealed a two-factor 10-item solution (57% of explained variance). The internal consistency was good (α=0.70-85) and test-retest assessment was excellent (ICC2.1=0.91-94). Construct validity was good, as ≥75% of hypotheses were confirmed.

CONCLUSIONS

The WIP questionnaire is a self-reported tool to evaluate commitment in persons with LBP showing satisfactory psychometric properties. It can be recommended for clinical and research purposes.

CLINICAL REHABILITATION IMPACT

This study adds original new data to the existing knowledge in the field of Commitment within the bio-psychosocial paradigm for disabled people. It is expected to contribute to the evaluative, clinical and rehabilitative approach of individuals with low back pain.

Selection of outcome measurement instruments for a core outcome set for trials aimed at improving appropriate polypharmacy in older people in primary care: a Delphi consensus study

BACKGROUND

Despite developing a polypharmacy core outcome set (COS) in primary care, it is not clear how these outcomes should be measured.

AIM

To select outcome measurement instruments (OMIs) for a COS targeting appropriate polypharmacy in older patients in primary care.

METHOD

Following the Consensus-based Standards for the selection of health Measurement Instruments (COSMIN) guideline, OMIs were identified from a Cochrane review focusing on appropriate polypharmacy. The quality of OMIs was assessed using a published checklist. Subsequently, two rounds of Delphi questionnaires were conducted via the SoGoSurvey® platform, engaging stakeholders (researchers, clinicians and journal editors specialising in geriatric primary care) to achieve consensus on OMIs using a scale encompassing "agree", "disagree", or "unsure". Consensus was achieved if 70% or more participants chose "agree" and 15% or fewer chose "disagree."

RESULTS

The quality of 20 OMIs identified from the Cochrane review was evaluated. Seven OMIs were selected based on meeting the COSMIN guideline's minimum requirements. Out of 188 potential participants, 57 (30.3%) consented to participate. Rounds 1 and 2 of Delphi exercises were completed by 50 respondents, achieving agreement on three OMIs: 'number of serious adverse drug reactions (ADRs)' (98%), 'number of deaths' (76%), and 'number of patients who fell' (70%) for measuring 'serious ADRs,' 'mortality,' and 'falls,' respectively. No agreement was reached for 'medication appropriateness,' 'medication side-effects,' 'quality of life,' and 'medication regimen complexity.'

CONCLUSION

OMIs were selected for a limited number of outcomes in the polypharmacy COS. Future research should identify suitable OMIs for the remaining four outcomes.

Effects of osteopathic manipulative treatment associated with transcranial direct current stimulation in individuals with chronic low back pain: A double-blind, randomised placebo-controlled trial

OBJECTIVE

To evaluate the effectiveness of osteopathic manipulative treatment (OMT) associated with transcranial direct current stimulation (tDCS) in reducing pain, disability, and improving quality of life in participants with non-specific chronic low back pain.

DESIGN

A randomised double-blind clinical trial.

SETTING

Clinical outpatient unit.

SUBJECTS

72 participants with non-specific chronic low back pain were randomised into three groups: active tDCS + OMT (n = 24), sham tDCS + sham OMT (n = 24), and sham tDCS + OMT (n = 24).

INTERVENTIONS

Evaluations were performed before, after the intervention, and one month post-intervention. tDCS consisted of ten 20-minute sessions over two weeks (five sessions per week). OMT was administered once per week, with two sessions conducted before the first and sixth tDCS sessions.

MAIN MEASURES

Pain, disability, and quality of life were assessed at baseline, after two weeks, and at one month of follow-up.

RESULTS

The visual analogue scale showed a significant decrease in all groups (p < 0.001). However, tDCS + OMT and sham tDCS + OMT demonstrated a clinically significant reduction compared to the sham combination (effect size n² = 0.315). Roland-Morris scores decreased across all groups without specific group effects. EuroQoL 5-Dimension 3-Level improvement was observed only in the tDCS + OMT and sham tDCS + OMT groups (significant difference between T2 and T0, p = 0.002).

CONCLUSION

The combination of OMT and tDCS did not provide clinically significant improvement over OMT alone in participants with non-specific chronic low back pain.

The STarT Back Screening Tool: The Nepali Translation, Cross-Cultural Adaptation and Measurement Properties in Adults With Non-Specific Low Back Pain

INTRODUCTION/OBJECTIVE

The STarT Back Screening Tool (SBST) stratifies low back pain (LBP) patients based on their risk of chronicity to guide treatment accordingly. The absence of its validated Nepali version limits stratified LBP care in Nepal. The study aimed to translate and cross-culturally adapt the SBST into Nepali and evaluate its measurement properties in adults with LBP.

METHODS

The measurement properties of the Nepali SBST were evaluated in 102 Nepali adults with non-specific LBP. We assessed content validity, internal consistency, test-retest reliability, construct and discriminant validity. Item redundancy was evaluated using Cronbach's alpha (α > 0.90), test-retest reliability using Intraclass Correlation Coefficient (ICC2,1) and Cohen's kappa using established cutoffs score for categorising patients into risk groups, construct validity using hypothesis testing (if a minimum of 75% of the hypotheses were supported), and discriminant validity using Area Under the Curve (AUC) with the reference scales administered at baseline.

RESULTS

Cronbach's alpha scores were 0.72 for the overall scale and 0.66 for the psychosocial subscale. Test-retest reliability values were good to excellent with ICC2,1 of 0.94 (95% CI: 0.87-0.97) for the overall scale and 0.87 (95% CI: 0.73-0.94) for the psychosocial subscale and Kappa values of 0.68 (95% CI: 0.43-0.93) for the overall scale and 0.79 (95% CI: 0.52-1.00) for psychosocial subscale. Construct validity was confirmed as 100% of a priori hypotheses were met. Acceptable discriminative validity was observed with reference scales with AUCs (0.75-0.80).

CONCLUSIONS

Nepali SBST demonstrates the reliability and validity of screening for chronicity risk in Nepali adults with LBP. Future studies should evaluate its responsiveness, predictive abilities, and effectiveness in stratifying LBP patients in the Nepalese context.

Effect of a smartphone self-management digital support system for low-back pain (selfBACK) among workers with high physical work demands - secondary analysis of a randomized controlled trial

OBJECTIVE

This study aimed to investigate whether physical work demands modify the effect of the selfBACK app, which is designed to support self-management of low-back pain.

METHODS

In a secondary analysis of the selfBACK trial with 346 employed participants, we stratified into low (N=165) and high physical work demands (N=181). Outcomes included the Roland-Morris Disability Questionnaire (0-24), a numeric rating scale for low-back pain intensity (0-10), the Pain Self-Efficacy Questionnaire (0-60), and work ability (0-10). Intervention effects were assessed at three- and nine-month follow-ups using a linear mixed model.

RESULTS

At three months, high physical demand workers with selfBACK showed a significant reduction in pain intensity [-0.8, 95% confidence interval (CI) -1.3- -0.2] compared to usual care. By nine months, the high physical demands workers with selfBACK reported reduced pain-related disability (-1.4, 95% CI -2.7- -0.1), improved pain self-efficacy (3.5, 95% CI 0.9-6.0), and lower pain intensity (-1.0, 95% CI -1.6- -0.4) compared to usual care. Low physical demands workers with selfBACK also improved pain self-efficacy [2.8 (95% CI 0.3-5.3)] compared to usual care. The impact of selfBACK was more noticeable among workers with high physical demands compared to their low physical demand counterparts, but no statistically significant differences were found in any outcome.

CONCLUSIONS

The selfBACK intervention had consistent effects across workers with high and low physical work demands, indicating that these demands did not modify its impact. Both groups experienced similar positive effects, highlighting the intervention's effectiveness across varying levels of physical work demands.

Glucocorticoid facet joint injection for chronic back or neck pain

OBJECTIVES

This is a protocol for a Cochrane Review (intervention). The objectives are as follows: The primary objective is to assess the benefits and harms of glucocorticoid facet joint injections in adults with chronic back or neck pain that is presumed to be facet joint-mediated. The secondary objective is to assess whether the effects differ by diagnostic method for facet joint-mediated pain.

Which Scale to Assess Pain Self-efficacy Shows Better Measurement Properties in Chronic Low Back Pain? A Head-To-Head Comparison Study

OBJECTIVE

To compare the quality of the measurement properties of Pain Self-Efficacy Questionnaire (PSEQ)-10, PSEQ-4, PSEQ-2, Chronic Pain Self-Efficacy Scale (CPSS) long-form, and CPSS short-form (CPSS-SF) in patients with chronic low back pain (CLBP).

DESIGN

Cross-sectional and longitudinal studies (measurement properties).

SETTING

Outpatient rehabilitation.

PARTICIPANTS

Participants (N=245) with nonspecific CLBP (18-60y, 63% women) were enrolled in this study.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Pain self-efficacy questionnaires were administered on 3 occasions: baseline assessment, 1 week after the first assessment (reliability), and after an 8-week exercise program (responsiveness). The intraclass correlation coefficient (ICC) and Cronbach α were used to assess reliability and internal consistency, respectively. Pearson correlation and confirmatory factor analyses were used to assess construct validity. The area under the curve and hypothesis testing were used to assess responsiveness.

RESULTS

No difference was observed for all the questionnaires regarding internal consistency (Cronbach α>.7), criterion validity (r>.88), and reliability (ICC>.7). The scales confirmed >75% of the hypotheses for the construct validity, except for CPSS-SF. PSEQ-2 did not meet the criterion for structural validity. PSEQ-10 met all the criteria for good measurement properties according to Consensus-Based Standards for the Selection of Health Measurement Instruments.

CONCLUSIONS

It was not possible to calculate structural validity for PSEQ-2, CPSS-SF did not meet the criterion for suitable hypothesis testing for construct validity, and all the questionnaires did not show suitable measurement error, except for the PSEQ-10. Hence, the PSEQ-10 was the unique scale that met all the criteria for good measurement properties for assessing pain self-efficacy in CLBP.

A systematic literature review on patient-reported outcome domains and measures in nonsurgical efficacy trials related to chronic pain associated with endometriosis: an urgent call to action

ABSTRACT

Endometriosis, a common cause for chronic pelvic pain, significantly affects quality of life, fertility, and overall productivity of those affected. Therapeutic options remain limited, and collating evidence on treatment efficacy is complicated. One reason could be the heterogeneity of assessed outcomes in nonsurgical clinical trials, impeding meaningful result comparisons. This systematic literature review examines outcome domains and patient-reported outcome measures (PROMs) used in clinical trials. Through comprehensive search of Embase, MEDLINE, and CENTRAL up until July 2022, we screened 1286 records, of which 191 were included in our analyses. Methodological quality (GRADE criteria), information about publication, patient population, and intervention were assessed, and domains as well as PROMs were extracted and analyzed. In accordance with IMMPACT domain framework, the domain pain was assessed in almost all studies (98.4%), followed by adverse events (73.8%). By contrast, assessment of physical functioning (29.8%), improvement and satisfaction (14.1%), and emotional functioning (6.8%) occurred less frequently. Studies of a better methodological quality tended to use more different domains. Nevertheless, combinations of more than 2 domains were rare, failing to comprehensively capture the bio-psycho-social aspects of endometriosis-associated pain. The PROMs used showed an even broader heterogeneity across all studies. Our findings underscore the large heterogeneity of assessed domains and PROMs in clinical pain-related endometriosis trials. This highlights the urgent need for a standardized approach to both, assessed domains and high-quality PROMs ideally realized through development and implementation of a core outcome set, encompassing the most pivotal domains and PROMs for both, stakeholders and patients.

Prevalence of weakness and factors mediating discrepancy between reported and observed leg weakness in people with sciatica

PURPOSE

To establish the prevalence and agreement between reported and observed leg weakness in people with sciatica. To establish which factors mediate any identified difference between reported and observed leg weakness in people with sciatica.

METHODS

68 people with a clinical diagnosis of sciatica, records from spinal service, secondary care NHS Hospital, England, UK reviewed. Primary outcome measures were the sciatica bothersome index for reported leg weakness and the Medical Research Council scale for observed weakness. Agreement was established with Cohen's Kappa and intraclass correlation coefficient. Potential factors that may mediate a difference between reported and observed weakness included leg pain, sciatica bothersome index sensory subscale, age, hospital anxiety and depression subscale for anxiety.

RESULTS

85% of patients reported weakness but only 34% had observed weakness. Cohen's Kappa (0.066, 95% CI - 0.53, 0.186; p = 0.317)] and ICC 0.213 (95% CI - 0.26, 0.428, p = 0.040) both showed poor agreement between reported and observed weakness. The difference between reported and observed measures of weakness was mediated by the severity of leg pain (b = 0.281, p = 0.024) and age (b = 0.253, p = 0.042).

CONCLUSION

There is a high prevalence of reported leg weakness in people with sciatica, which is not reflected in observed clinical measures of weakness. Differences between reported and observed weakness may be driven by the severity of leg pain and age. Further work needs to establish whether other objective measures can detect patient reported weakness.

Influence of nationality on the trajectories of pain, disability and health related quality of life in neck and back patients - The Norwegian Neck and Back Registry

PURPOSE

The aim of the current study was to examine differences in trajectories of pain, disability, and health related quality of life (HRQOL) between non-Norwegian and Norwegian patients with neck and back pain over 12 months.

METHODS

The study is based on data from the Norwegian Neck and Back Registry (NNRR). The data include demographics and patient-reported outcome measures such as pain rating, the Oswestry Disability Index and HRQOL. Data were collected at baseline, 6 and 12 months after consultation for neck and back pain in specialist health care.

RESULTS

A total of 5012 patients were included. We found a significant main effect of nationality. Non-Norwegian patients showed higher levels of pain and disability and lower HRQOL than Norwegian patients. Both patient groups exhibited an improvement in all three outcomes at 6- and 12-month follow-ups. The improvement was similar for pain with the greatest improvement taking place during the first 6 months and then slightly flattening out. For disability and HRQOL, we observed a differential effect over time as a function of nationality. Both groups reported an improvement the first 6 months, however, while the Norwegian patients continued their improvement to 12 months, non-Norwegian patients had increasing disability and lower HRQOL at 12 months.

CONCLUSION

Both patient groups improved over the 12-month period. Non-Norwegian patients showed an overall higher level of pain, disability and lower HRQOL compared to Norwegian patients, with a differential effect over time as a function of nationality for disability and HRQOL. Suggesting that future studies should focus on potential systemic barriers that may affect the recovery of neck and back patients based on nationality.

Research hotspots and frontiers in non-specific low back pain: a bibliometric analysis

Background

Extensive research has been conducted worldwide on non-specific low back pain (NSLBP), some researchers published a bibliometric analysis of NSLBP in 2020, but there have been no supplements or updates since then. Therefore, this study aimed to analyze the research hotspots and frontiers in NSLBP over the last decade.

Methods

Primary sources on NSLBP were obtained from the Web of Science Core Collection database from 2014 to 2023. CiteSpace V6.2. R7 (64-bit) and VOSviewer 1.6.19 software were used to analyze the number and centrality of journals, countries, institutions, authors, references, and keywords, and the functions of co-occurrence and clustering were applied to draw a visual knowledge map.

Results

In the past decade, the annual publication volume of studies on NSLBP has shown an overall upward trend year by year, with obvious temporal stages and great development potential. In total, 2,103 articles contained six types of literature, with the highest proportion being original research articles (1,633 articles, 77.65%), published in 200 journals. BMC Musculoskeletal Discourses (90 articles, 4.28%) had the highest number of publications, and the British Medical Journal had the highest impact factor (105.7). Furthermore, the United States of America (329 articles, 15.64%) had the highest publication volume, the University of Sydney (139 articles, 6.61%) was the research institution with the highest production, Maher, Chris G (36 articles, 1.71%) was the author with the most published articles, and Hoy, D (571 articles, 27.15%) was the most frequently cited author. The most cited of articles is "Non-specific low back pain" published in the LANCET, with 1,256 citations.

Conclusion

This article summarizes the current research status of NSLBP and predicts future research hotspots and frontiers. In recent years, adolescents have become a high-risk group for NSLBP. Pain neuroscience education, motor control, spinal manipulative therapy, and acupuncture are effective means to treat NSLBP. Biomechanics and trunk muscles as entry points are effective ideas for the treatment of NSLBP pain. Furthermore, anxiety, neck pain, non-specific musculoskeletal pain, fibromyalgia, and musculoskeletal disorders are diseases that are closely related to NSLBP. In the future, attention should be paid to the design of research plans, increasing the research intensity of randomized controlled trials, strengthening follow-up, and the timely updating of guidelines, which will result in higher quality and high-level scientific evidence for research on NSLBP.

Patient satisfaction with clinical services provided by chiropractic students under supervision compared to licensed chiropractors: An observational study

OBJECTIVE

This study investigated patient satisfaction with care provided by chiropractic students under supervision vs supervisors in a Danish hospital setting.

METHODS

A cross-sectional observational study of patient satisfaction was conducted at the Spine Center of Southern Denmark, where chiropractic students from the University of Southern Denmark complete an 8-week internship in their final year of pregraduate training. Patients were assigned to students or supervisors based on administrative convenience (ie, natural allocation). Blinded from the aim of the study, all patients seen by a chiropractor (with or without a student) were invited to answer a questionnaire rating satisfaction with the clinical encounter. Results were analyzed using ordinal logistic regression with group allocation blinded by the investigators.

RESULTS

Results from 438 participants (response rate = 88%) showed no significant difference in patient satisfaction between the student and supervisor groups. Although a small difference favored the supervisor group, the student group had a higher proportion of high and very high satisfaction combined.

CONCLUSION

Satisfaction differed minimally whether patient care was administered by students under the supervision of a licensed chiropractor or by licensed chiropractors alone. Our findings suggest that patients do not negatively view student involvement in clinical consultations at a Danish hospital.

Evidence gaps in conservative non-pharmacological interventions and guideline implementation for high-burden non-communicable diseases: protocol for an overview of reviews

Non-communicable diseases (NCDs) represent a high burden for the society and affected individuals. Conservative non-pharmacological interventions play a first-line role in the treatment and management of most NCDs. Systematic reviews (SRs) provide the highest level of evidence and significantly influence clinical decision-making. The primary aim of this study is to provide an overview of the evidence on the effectiveness of recommended conservative non-pharmacological interventions for highly burdensome NCDs. The secondary aim is to provide an overview of the evidence for guideline implementation. A literature search was performed in Medline (PubMed), EMBASE and Cochrane CENTRAL. Six reviewers will, in duplicate, independently screen and select studies following eligibility criteria. The population will include individuals with NCDs from disease categories chosen based on WHO burden of disease data and the importance of conservative rehabilitation for their management. Eligible interventions will encompass conservative non-pharmacological approaches recommended by clinical practice guidelines (ie, physical, psychological and education/advice). Eligible comparator will include no or minimal intervention and other competitive interventions. Outcomes will comprise proposed core outcomes for the respective diseases, including patient-reported (eg, pain) and performance-based (eg, physical functioning) outcomes. SRs published in the last 5 years as peer-reviewed journal article in the English language will be eligible. The overview will be reported in accordance with the Preferred Reporting Items for Overviews of reviews.

A Systematic Review on the Neuropsychological Assessment of Patients with LBP: The Impact of Chronic Pain on Quality of Life

Background and objective: Low back pain (LBP) is most common pain syndrome in Europe, affecting approximately 50% of European citizens. LBP is a complex condition that negatively affects many aspects of an individual's life such as work productivity, mobility, and mental health. The aim of this study is to assess the impact of pain associated with chronic LBP on patients' quality of life. Methods: Clinical studies reviewed in our search with no time restrictions were identified from PubMed, Web of Science, Scopus, and Cochrane Library databases. Of the initial 1929 studies, only 15 met inclusion criteria. Results: Results of our study indicate that chronic pain has a negative impact on numerous functions and areas in which the individual is involved and that this condition leads to reduced performance. Conclusions: LBP is a debilitating condition for patients, negatively affecting quality of life. Future studies should focus on validating a standardized assessment that examines all aspects affected by LBP through a customized questionnaire.

Precision of trunk movement in people with chronic low back pain

BACKGROUND

Motor control exercise is commonly applied in people with chronic low back pain (CLBP), but possibly not all people with CLBP have motor control impairments. We suggest movement precision as measure to identify motor control impairments. Movement precision has been operationalized as trunk movement variability (TMV) and as trunk tracking error(s) (TTE).

OBJECTIVES

To compare the known-group validity and the responsiveness of TMV and TTE.

DESIGN

We used a case-control comparison (Healthy controls (n = 30) vs CLBP (n = 60)) to assess the known-group validity. A cohort study, (measurements in week 3 and week 12 of treatment), was used to assess responsiveness.

METHODS

TMV (temporal (CyclSD) and spatial (MeanSD)) was analyzed during standing, repetitive flexion and rotation tasks (35x). TTE was measured during movement target tracking tasks, again in flexion and rotation. Participants with CLBP followed a multidisciplinary intervention and both measures were assessed in week 3 and week 12 of treatment. 2-way MANOVA and 2-way ANOVA were used to assess the effect of Group (CLBP vs healthy controls) and direction (flexion vs rotation) on TMV and TTE. For responsiveness, 2-way MANOVA and 2-way ANOVA were used to assess the effect of treatment and direction on both measures.

FINDINGS

At baseline, TMV was not different between groups, while TTE was higher in the people with CLBP (p = 0.005, np2 = 0.09). Treatment strongly decreased temporal TMV (p = 0.025, np2 = 0.33) and TTE (p < 0.001, np2 = 0.844).

CONCLUSIONS

These results demonstrate that TTE is more sensitive to CLBP and more responsive to treatment than TMV.

Systematic reviews and quality assessment of patient-reported outcome measures for physical function in comparative effectiveness studies regarding acute postoperative pain after total knee arthroplasty-Do we need to start all over again?

BACKGROUND AND OBJECTIVE

Recently, a consensus process specified a core outcome set (COS) of domains to be assessed in each comparative effectiveness research and clinical practice related to acute postoperative pain. Physical function (PF) was one of these domains. The aim of this review was to investigate which patient-reported outcome measures (PROMs) are used to assess PF after total knee arthroplasty (TKA) in clinical trials and if they fulfil basic requirements for a COS of PROMs based on their psychometric properties.

METHODS

A systematic review of randomized controlled trials and observational studies based on a search in MEDLINE, EMBASE and CENTRAL was undertaken. PROMs and performance measures were extracted and investigated, including evaluation of psychometric properties of PROMs based on COSMIN recommendations.

RESULTS

From initially 2896 identified records, 479 studies were included in the qualitative synthesis. Only 87 of these trials (18%) assessed PF using PROMs, whereas especially performance outcome measures were used in 470 studies (98%). Application of the 'COSMIN Risk-of-Bias-Box 1' to 13 of the 14 identified PROMs resulted in insufficient content validity of the included PROMs regarding the target population based on the inauguration or development articles.

CONCLUSION

Our data indicate that a patient-centred postoperative assessment of PF in pain-related clinical trials early after TKA is not common, even though patient-reported assessment is widely recommended. In addition, none of the applied PROMs shows content validity based on their inauguration or development articles for the assessment of postoperative pain-related PF after TKA.

SIGNIFICANCE

A systematic search for patient-reported outcome measures assessing postoperative, pain-related physical function after total knee arthroplasty in clinical trials and assessment of their content validity revealed none that fulfilled requirements based on COSMIN recommendations.

How is recovery defined and measured in patients with low back pain? A mixed study systematic review

BACKGROUND

Despite the burden of low back pain (LBP) there is no currently accepted definition for its recovery, nor is there a gold standard for measurement. In addition, it is currently unclear how the perspective of patients are used in making recovery determinations. The purpose of this mixed study systematic review across both quantitative and qualitative literature was to (1) explore how recovery has been defined and measured for patients experiencing LBP, and (2) examine how the perspectives of patients and providers for recovery of LBP align or differ.

METHODS

This was a mixed study systematic review. Key databases were searched from inception until February 20, 2023: Medline, EMBASE, CINAHL, Cochrane, PEDro looking for sources examining definitions and measures of recovery in patients with LBP. Grey literature was identified through the ProQuest Thesis & Dissertation database. Two reviewers used the Mixed Methods Appraisal Tool for quality assessment of both qualitative and quantitative studies to explore definitions, measurements and perspective of recovery.

RESULTS

466 original studies were included: 12 qualitative studies, 88 quantitative randomized control trials, 348 quantitative non-randomized studies, 16 quantitative descriptive studies, and two mixed methods studies. Most of the time recovery was not defined, with six other themes identified: comparison of scores, in relation to a singular cut-off score, improvement of absence of clinical symptoms, a return to a pre-injury state, change/improvement score from baseline and as a process/trajectory. For recovery measurements, six themes described the data: multiple measures, single measure excluding recovery, a recovery measure, recovery and an additional measure, pain and an additional measure, or indirect/ not specified. Lastly recovery perspectives were made from either the patient, provider, or a combination of patient and provider.

CONCLUSION

For patients living with LBP, the concept of recovery continues to lack consensus for its definition and measurement in patients with LBP. The perspectives of patients were mostly not preserved in making recovery determinations. Urgent action is needed to generate consensus across clinicians, researchers, and patients regarding how recovery should be defined and measured. A multitude of study-specific definitions limit knowledge syntheses and definition of best practice.

Thresholds in PROMIS Scores Anchored to Subsequent Unscheduled Health Service Use Among People Diagnosed With Cancer

PURPOSE

To establish thresholds in the Patient-Reported Outcomes Measurement Information System (PROMIS) pain interference, physical function, fatigue, and depression scores on the basis of their association with subsequent use of the emergency department (ED) or urgent care by people diagnosed with cancer.

METHODS

Retrospective data from 952 people seen at Henry Ford Cancer and insured through the Health Alliance Plan were analyzed using generalized linear mixed-effects models. The log odds of ED or urgent care use during 14 or 30 days after each patient-reported outcome (PRO) assessment were related to PRO scores, while adjusting for comorbidity, sociodemographic, and tumor characteristics.

RESULTS

Pain interference and physical function were associated with subsequent ED or urgent care visits, but fatigue and depression were not, and the results for 14- and 30-day visits were similar. Thresholds anchored in the likelihood of these visits differed according to cancer stage. For people with advanced cancer, a pain interference score of 60 or higher (odds ratio [OR] 3.75, [95% CI, 1.53 to 7.87]) and a physical function score lower than 40 (OR 2.94, [95% CI, 1.22 to 7.06]) produced the largest ORs with narrowest CIs for 30-day visits. For people with nonadvanced cancer, the thresholds of 65 for pain interference (OR 2.64, [95% CI, 1.40 to 5.01]) and 35 for physical function (OR 1.87, [95% CI, 1.01 to 3.45]) produced largest ORs with narrowest CIs for 30-day visits.

CONCLUSION

These anchor-based thresholds in PROMIS scores can inform clinicians' actions with the goal of preventing ED or urgent care visits.

Vulnerability Factors, Adjustment, and Opioid Misuse in Chronic Noncancer Pain Individuals

Several person variables predate injury or pain onset that increase the probability of maladjustment to pain and opioid misuse. The aim of this study was to evaluate the role of 2 diathesis variables (impulsiveness and anxiety sensitivity [AS]) in the adjustment of individuals with chronic noncancer pain and opioid misuse. The sample comprised 187 individuals with chronic noncancer pain. The hypothetical model was tested using correlation and structural equation modeling analyses. The results show a significant association between impulsiveness and AS and all the maladjustment variables, and between impulsiveness and AS and opioid misuse and craving. However, although the correlation analysis showed a significant association between adjustment to pain and opioid misuse, the structural equation modeling analysis showed a nonsignificant association between them (as latent variables). The findings support the hypothesis that both impulsiveness and AS are vulnerability factors for maladaptive adjustment to chronic pain and opioid misuse. PERSPECTIVE: This article adds to the empirical literature by including AS and impulsiveness as antecedent variables in a model of dual vulnerability to chronic pain maladjustment and opioid misuse. The findings suggest the potential utility of assessing both factors in individuals in the first stages of chronic pain.

Adherence and Compliance of Different Delivery Methods of Home Exercise in Individuals With Nonspecific Low Back Pain

Autonomous exercise within nonspecific low back pain rehabilitation is a necessary tool to treat low back pain. The purpose of this study was to quantify adherence and compliance during two different 6-week home-exercise programs. Forty adults were randomly allocated to a gamified and packet group. Adherence, compliance, and system usability assessments occurred after 3 and 6 weeks. Packet group adherence was similar at 3 weeks and at 6 weeks. System usability was significantly greater at 6 weeks than at 3 weeks in the packet group. Adherence or compliance was not influenced. The usability of the intervention methodology was considered great by both groups.

Physical functioning in the lumbar spinal surgery population: A systematic review and narrative synthesis of outcome measures and measurement properties of the physical measures

BACKGROUND

International agreement supports physical functioning as a key domain to measure interventions effectiveness for low back pain. Patient reported outcome measures (PROMs) are commonly used in the lumbar spinal surgery population but physical functioning is multidimensional and necessitates evaluation also with physical measures.

OBJECTIVE

1) To identify outcome measures (PROMs and physical) used to evaluate physical functioning in the lumbar spinal surgery population. 2) To assess measurement properties and describe the feasibility and interpretability of physical measures of physical functioning in this population.

STUDY DESIGN

Two-staged systematic review and narrative synthesis.

METHODS

This systematic review was conducted according to a registered and published protocol. Two stages of searching were conducted in MEDLINE, EMBASE, Health & Psychosocial Instruments, CINAHL, Web of Science, PEDro and ProQuest Dissertations & Theses. Stage one included studies to identify physical functioning outcome measures (PROMs and physical) in the lumbar spinal surgery population. Stage two (inception to 10 July 2023) included studies assessing measurement properties of stage one physical measures. Two independent reviewers determined study eligibility, extracted data and assessed risk of bias (RoB) according to COSMIN guidelines. Measurement properties were rated according to COSMIN criteria. Level of evidence was determined using a modified GRADE approach.

RESULTS

Stage one included 1,101 reports using PROMs (n = 70 established in literature, n = 67 developed by study authors) and physical measures (n = 134). Stage two included 43 articles assessing measurement properties of 34 physical measures. Moderate-level evidence supported sufficient responsiveness of 1-minute stair climb and 50-foot walk tests, insufficient responsiveness of 5-minute walk and sufficient reliability of distance walked during the 6-minute walk. Very low/low-level evidence limits further understanding.

CONCLUSIONS

Many physical measures of physical functioning are used in lumbar spinal surgery populations. Few have investigations of measurement properties. Strongest evidence supports responsiveness of 1-minute stair climb and 50-foot walk tests and reliability of distance walked during the 6-minute walk. Further recommendations cannot be made because of very low/low-level evidence. Results highlight promise for a range of measures, but prospective, low RoB studies are required.

Prognostic Factors and Treatment Effect Modifiers for Physical Health, Opioid Prescription, and Health Care Utilization in Patients With Musculoskeletal Disorders in Primary Care: Exploratory Secondary Analysis of the STEMS Randomized Trial of Direct Access to Physical Therapist-Led Care

OBJECTIVE

The aims of the study were to identify prognostic factors associated with health care outcomes in patients with musculoskeletal (MSK) conditions in primary care and to determine whether characteristics associated with choice of care modify treatment effects of a direct-access physical therapist-led pathway in addition to general practitioner (GP)-led care compared to GP-led care alone.

METHODS

A secondary analysis of a 2-parallel-arm, cluster randomized controlled trial involving general practices in the United Kingdom was conducted. Practices were randomized to continue offering GP-led care or to also offer a direct-access physical therapist-led pathway. Data from adults with MSK conditions who completed the 6-month follow-up questionnaire were analyzed. Outcomes included physical health, opioid prescription, and self-reported health care utilization over 6 months. Treatment effect modifiers were selected a priori from associations in observational studies. Multivariable regression models identified potential prognostic factors, and interaction analysis tested for potential treatment effect modifiers.

RESULTS

Analysis of 767 participants indicated that baseline pain self-efficacy, pain severity, and having low back pain statistically predicted outcomes at 6 months. Higher pain self-efficacy scores at baseline were associated with improved physical health scores, reduced opioid prescription, and less health care utilization. Higher bodily pain at baseline and having low back pain were associated with worse physical health scores and increased opioid prescription. Main interaction analyses did not reveal that patients' age, level of education, duration of symptoms, or MSK presentation influenced response to treatment, but visual trends suggested those in the older age group proceeded to fewer opioid prescriptions and utilized less health care when offered direct access to physical therapy.

CONCLUSIONS

Patients with MSK conditions with lower levels of pain self-efficacy, higher pain severity, and presenting with low back pain have less favorable clinical and health care outcomes in primary care. Prespecified characteristics did not modify the treatment effect of the offer of a direct-access physical therapist-led pathway compared to GP-led care.

IMPACT

Patients with MSK conditions receiving primary care in the form of direct-access physical therapist-led or GP-led care who have lower levels of self-efficacy, higher pain severity, and low back pain are likely to have a less favorable prognosis. Age and duration of symptoms should be explored as potential patient characteristics that modify the treatment response to a direct-access physical therapist-led model of care.

Changes in spinal motor behaviour are associated with reduction in disability in chronic low back pain: A longitudinal cohort study with 1-year follow-up

BACKGROUND

The need to improve spinal motor behaviour in chronic low back pain (CLBP) rehabilitation remains unclear. The objective of this study was to test if changes in spinal motor behaviour were associated with changes in disability after an interdisciplinary rehabilitation program (IRP) in patients with CLBP.

METHODS

Seventy-one patients with CLBP participating in an IRP were included. Spinal motor behaviour was assessed with biomechanical (lumbar angular amplitude and velocity, erector spinae muscle activity and duration of the task), cognitive-emotional (task-specific fear [PRF]) and pain-related (movement-evoked pain [MEP]) measures during a lifting task before and after the IRP. Disability was measured before and after the IRP, and at 3-month and 1-year follow-ups.

RESULTS

After adjusting for confounders, changes in disability were significantly associated with MEP changes (β adj. = 0.49, p < 0.001) and PRF changes (β adj. = 0.36, p = 0.008), but not with changes in any of the biomechanical measures. MEP at the end of IRP was also associated with disability at 3 months (β adj. = 0.37, p = 0.001) and 1 year (β adj. = 0.42, p = 0.01). Biomechanical measures at the end of the IRP were not associated with disability, except for the duration of the task that was significantly associated with reduction of disability at 3 months (β non-adj = 0.5, p < 0.001).

CONCLUSIONS

Pain-related and cognitive-emotional measures of spinal motor behaviour were associated with reduction in disability following an IRP. Future research is needed to further investigate causal relationships between spinal motor behaviour and disability.

SIGNIFICANCE STATEMENT

This study supports a multidimensional understanding and analysis of spinal motor behaviour, integrating the cognitive-emotional, pain-related and biomechanical domains. It also supports the consideration of spinal motor behaviour as a potentially important treatment target in chronic low back pain management. Moreover, it suggests that reducing movement-evoked pain and task-specific fear may have more influence on disability than changing lumbar amplitude, lumbar angular velocity or erector muscle activity, which may have important implications for rehabilitation.

Responsiveness and minimal important change of specific and generic patient-reported outcome measures for back patients: the Norwegian Neck and Back Register

PURPOSE

To evaluate responsiveness and minimal important change (MIC) of Oswestry Disability Index (ODI), pain during activity on a numeric rating scale (NRSa) and health related quality of life (EQ-5D) based on data from the Norwegian neck and back registry (NNRR).

METHODS

A total of 1617 patients who responded to NNRR follow-up after both 6 and 12 months were included in this study. Responsiveness was calculated using standardized response mean and area under the receiver operating characteristic (ROC) curve. We calculated MIC with both an anchor-based and distribution-based method.

RESULTS

The condition specific ODI had best responsiveness, the more generic NRSa and EQ-5D had lower responsiveness. We found that the MIC for ODI varied from 3.0 to 9.5, from 0.4 to 2.5 for NRSa while the EQ5D varied from 0.05 to 0.12 depending on the method for calculation.

CONCLUSION

In a register based back pain population, the condition specific ODI was more responsive to change than the more generic tools NRSa and EQ5D. The variations in responsiveness and MIC estimates also indicate that they should be regarded as indicative, rather than fixed estimates.

Exploring the association between adherence to home-based exercise recommendations and recovery of nonspecific low back pain: a prospective cohort study

BACKGROUND

Adherence to home-based exercise (HBE) recommendations is critical in physiotherapy for patients with low back pain (LBP). However, limited research has explored its connection with clinical outcomes. This study examined how adherence to HBE relates to changes in physical function, pain intensity, and recovery from LBP in patients undergoing physiotherapy treatment.

METHODS

Data from a multicenter cluster randomized controlled trial in the Netherlands involving patients with LBP from 58 primary care physiotherapy practices were used. Adherence to HBE was assessed with the Exercise Adherence Scale (EXAS) at each treatment session. Previously identified adherence trajectories served as a longitudinal measure of adherence and included the classes "declining adherence" (12% of participants), "stable adherence" (45%), and "increasing adherence" (43%). The main outcomes included disability (Oswestry Disability Index), pain (Numeric Pain Rating Scale), and recovery (pain-free for > 4 weeks), which were measured at baseline and after three months. Linear and binomial logistic regression analyses adjusted for confounders were used to examine adherence-outcome relationships.

RESULTS

In the parent trial, 208 participants were included. EXAS scores were available for 173 participants, collected over a median of 4.0 treatment sessions (IQR 3.0 to 6.0). Forty-five (28.5%) patients considered themselves to have recovered after three months. The median changes in the Oswestry Disability Index and Numeric Pain Rating Scale were - 8 (IQR - 1 to -20) and - 2 (IQR - 0.5 to -4), respectively. The mean EXAS scores varied among patient classes: "declining adherence" (46.0, SD 19.4), "stable adherence" (81.0, SD 12.4), and "increasing adherence" (39.9, SD 25.3), with an overall mean of 59.2 (SD 25.3). No associations between adherence and changes in physical functioning or pain were found in the regression analyses.

CONCLUSIONS

No association between adherence to HBE recommendations and changes in clinical outcomes in patients with LBP was found. These findings suggest that the relationship between adherence to HBE recommendations and treatment outcomes may be more complex than initially assumed. Further research using detailed longitudinal data combined with qualitative methods to investigate patient motivation and beliefs may lead to a deeper understanding of the relationship between adherence and clinical outcomes in patients with LBP.

Implementation of back to living well, a community-based program for the tertiary prevention of low back pain: a study protocol

BACKGROUND

The current literature supports the effectiveness of exercise, education, and self-management interventions for the long-term management of persistent low back pain. However, there is significant uncertainty about the implementation of interventions related to barriers, facilitators, and patient's preferences. This study will evaluate the Back to Living Well program implementation from a participant and organizational perspective. More specifically we address the following objectives: 1) identify program barriers and facilitators from participants' perspectives, 2) identify factors related to program, personal and contextual factors that contribute to negative and positive outcomes, and outcome trajectories, 3) identify factors influencing participants' selection of an in-person or e-health program, and 4) evaluate program specific barriers and facilitators from the organization and care delivery perspectives.

METHODS

This study will utilize a mixed-method convergent design including a longitudinal cohort strand and a longitudinal qualitative interview strand. The RE-AIM framework will be used to assess program implementation. Participants (n = 90, 1:1: in person or virtual) who choose to register in the program as well as staff (n = 10 to 15) involved in the delivery of the program will be invited to participate. Participants will participate in a 12-week physical activity, education, and self-management program. Implementation outcomes will be measured at 3-, 6-, 12-months, and six months after the end of the follow-ups. Interview scripts and directed content analysis will be constructed based on the Theoretical Domains Framework and the Neuromatrix Model of Pain, Theoretical Domains Framework. Staff interviews will be constructed and analyzed using the Consolidated Framework for Implementation Research. Participants will also complete pain, disability, quality of life and psychological questionnaires, wear an activity tracker at all time points, and complete weekly pain and activity limitation questions using a mobile application.

DISCUSSION

The study results will provide evidence to inform potential future implementation of the program. An effective, appropriately targeted, and well implemented exercise program for the long-term management (i.e., tertiary prevention) of LBP could minimize the burden of the condition on patients, the health care system and society.

TRIAL REGISTRATION

ClinicalTrials.gov NCT05929846. This (Registration Date: July 3 2023) study has been approved by the Hamilton Integrated Research Ethics Board Project ID#15,354.

Evaluating the efficacy of wearable biofeedback on the outcomes of exercise interventions in people with chronic non-specific spinal pain: protocol for a systematic review and meta-analysis

INTRODUCTION

Wearable neuromuscular and biomechanical biofeedback technology has the potential to improve patient outcomes by facilitating exercise interventions. We will conduct a systematic review to examine whether the addition of wearable biofeedback to exercise interventions improves pain, disability and quality of life beyond exercise alone for adults with chronic non-specific spinal pain. Specific effects on clinical, physiological, psychological, exercise adherence and safety outcomes will also be examined.

METHODS AND ANALYSIS

A systematic search will be conducted from inception to February 2024. Full articles in the English language will be included. MEDLINE, PubMed, CINAHL, EMBASE, Web of Science, PsycINFO, AMED, SPORTDiscus, CENTRAL databases, clinical trial registries and ProQuest (PQDT) will be used to search for eligible studies. Grey literature and conference proceedings (2022-2024) will be searched for relevant reports. Randomised controlled trials using wearable neuromuscular or kinematic biofeedback devices as an adjunct to exercise interventions for the treatment of chronic spinal pain will be included in this systematic review. The comparators will be wearable biofeedback with exercise versus exercise alone, or wearable biofeedback with exercise versus placebo and exercise. Risk of bias will be assessed using Cochrane Back Review Group criteria and the quality of evidence using Grading of Recommendations Assessment, Development and Evaluation recommendations.

ETHICS AND DISSEMINATION

The systematic review will be based on published studies, and therefore, does not require ethical approval. The study results will be submitted for publication in an international, open-access, peer-reviewed journal and shared through conferences and public engagement.

PROSPERO REGISTRATION NUMBER

CRD42023481393.