Chronic Low Back Pain: A Narrative Review of Recent International Guidelines for Diagnosis and Conservative Treatment

Impact of Sacroiliac Belt Utilization on Balance in Patients with Low Back Pain

Background

Low back pain (LBP) is a common problem which can affect balance and, in turn, increase fall risk. The aim of this investigation was to evaluate the impact of a Sacroiliac Belt (SB) on balance and stability in patients with LBP.

Methods

Subjects with LBP and without LBP ("Asymptomatic") were enrolled. Baseline balance was assessed using the Berg Balance Scale. In a counterbalanced crossover design, LBP and Asymptomatic subjects were randomized to one of two groups: 1) start with wearing the SB (Serola Biomechanics, Inc.) followed by not wearing the SB or 2) start without wearing the SB followed by wearing the SB. For subjects in both groups, dynamic balance was then assessed using the Star Excursion Balance Test (SEBT) with each leg planted.

Results

Baseline balance was worse in LBP subjects (Berg 51/56) than Asymptomatic subjects (Berg 56/56) (p<0.01). SB significantly improved SEBT performance in LBP subjects regardless of which leg was planted (p<0.01). SB positively impacted Asymptomatic subjects' SEBT performance with the left leg planted (p=0.0002).

Conclusion

The Serola Sacroiliac Belt positively impacted dynamic balance for subjects with low back pain. Further research is needed to examine additional interventions and outcomes related to balance in patients with back pain, and to elucidate the mechanisms behind improvements in balance related to sacroiliac belt utilization.

Exercise interventions for nonspecific low back pain: a bibliometric analysis of global research from 2018 to 2023

Objective

This study aims to explore global research trends on exercise interventions for nonspecific low back pain from 2018 to 2023 through bibliometric analysis.

Methods

A systematic search was conducted in the Web of Science Core Collection database to select relevant research articles published between 2018 and 2023. Using CiteSpace and VOSviewer, the relationships and impacts among publications, different countries, journals, author groups, references, and keywords were analyzed in depth.

Results

The bibliometric analysis included 4,896 publications, showing a trend of initial growth followed by a decline. At the national level, the United States made the most significant contributions in this field. The journal "Lancet" had three of the top 10 most-cited articles, with an average citation count of 306.33, and an impact factor reaching 168.9 in 2023. The analysis also revealed that "disability," "prevalence," and "management" were high-frequency keywords beyond the search terms, while "rehabilitation medicine," "experiences," and "brain" emerged as new hotspots in the research.

Conclusion

This study reveals the global trends in research on exercise interventions for nonspecific low back pain over the past 5 years and highlights potential research frontiers in the field. These findings provide a solid foundation for focusing on key issues, potential collaboration directions, and trends in research development in the future, offering valuable references for further in-depth studies.

Estimation of lower back muscle force in a lifting task using wearable IMUs

Low back pain is commonly reported in occupational settings due to factors such as heavy lifting and poor ergonomic practices, often resulting in significant healthcare expenses and lowered productivity. Assessment tools for human motion and ergonomic risk at the workplace are still limited. Therefore, this study aimed to assess lower back muscle and joint reaction forces in laboratory conditions using wearable inertial measurement units (IMUs) during weight lifting, a frequently high-risk workplace task. Ten able-bodied participants were instructed to lift a 28 lbs. box while surface electromyography sensors, IMUs, and a camera-based motion capture system recorded their muscle activity and body motion. The data recorded by IMUs and motion capture system were used to estimate lower back muscle and joint reaction forces via musculoskeletal modeling. Lower back muscle patterns matched well with electromyography recordings. The normalized mean absolute differences between muscle forces estimated based on measurements of IMUs and cameras were less than 25 %, and the statistical parametric mapping results indicated no significant difference between the forces estimated by both systems. However, abrupt changes in motion, such as lifting initiation, led to significant differences (p < 0.05) between the muscle forces. Furthermore, the maximum L5-S1 joint reaction force estimated using IMU data was significantly lower (p < 0.05) than those estimated by cameras during weight lifting and lowering. The study showed how kinematic errors from IMUs propagated through the musculoskeletal model and affected the estimations of muscle forces and joint reaction forces. Our findings showed the potential of IMUs for in-field ergonomic risk evaluations.

Biopsychosocial rehabilitation in the working population with chronic low back pain: a concept analysis

OBJECTIVE

To identify the essential attributes of biopsychosocial rehabilitation for chronic low back pain in the working population.

DESIGN

A concept analysis was conducted according to the 8-step method of Walker and Avant. This framework provides a clear concept and theoretical and operational definitions.

METHODS

Five databases were searched, followed by a systematic screening. Subsequently, attributes, illustrative cases, antecedents, consequences and empirical referents were formulated.

RESULTS

Of the 3793 studies identified, 42 unique references were included. Eleven attributes were identified: therapeutic exercise, psychological support, education, personalization, self-management, participation, follow-up, practice standard, goal-setting, social support, and dietary advice. Subsequently, illustrative cases were described. Antecedents, such as motivation, preparedness and a multidisciplinary team, were found, together with consequences such as decreased pain, less sick-leave and increased function and work status. Finally, examples of empirical referents were given.

CONCLUSION

This study identified the attributes that are necessary to develop biopsychosocial rehabilitation intervention programmes for chronic low back pain. The defined concept of biopsychosocial rehabilitation for chronic low back pain may serve as a solid base to further develop and apply interventions. Future research should focus on the objectification of biopsychosocial rehabilitation and conceptualization regarding how personalization is done.

Epidemiology of low back pain: frequency, risk factors, and patterns in South-South Nigeria

Introduction

Low back pain (LBP) is a prevalent musculoskeletal condition that poses significant public health challenges. However, its epidemiology in Sub-Saharan Africa, especially in rural settings, remains largely unexplored. This study aimed to determine the epidemiology of LBP in a Nigerian Teaching Hospital.

Material and methods

This was a retrospective review of the records of all LBP cases seen at the rheumatology clinic from 2018 to 2022 in a Teaching Hospital in South-South Nigeria. The sociodemographic and clinical data, including disability scores, was extracted from the patients' medical records. The data was analyzed using IBM SPSS version 25, and the level of significance was set at p < 0.05.

Results

Among 1,580 patients, 319 (20.2%) reported LBP. The mean age was 59.51 ±10.21, and the peak age incidence was 51-60 years. Low back pain was more prevalent in females (61.4%). Work-related factors (47.3%) such as heavy lifting (26.3%), prolonged sitting (19.4%), and poor posture (27.9%) were the prominent risk factors. Sedentary behavior (11.5%) and obesity (16.9%) contributed. Common clinical manifestations included difficulty standing or bending (73%), walking difficulties (67.7%), sleep disturbances (51.4%), and radicular pain (45.8%). Common etiologies were spondylosis (66.5%), spondylolisthesis (22.3%), disc prolapse (19.4%), spinal canal stenosis (15.4%), muscle spasm (12.2%), and tuberculous spondylitis (9.7%). Acute and chronic LBP constituted 12.2% and 79.9% of cases, respectively. In terms of disability, 33.5% had minimal, 44.5% had moderate, 15.4% had severe, and 6.6% had crippling disabilities.

Conclusions

Mechanical causes were the most implicated in LBP. Work-related factors and lifestyle choices contribute to the occurrence of LBP. Adjusting posture and lifestyle modification reduces LBP risk. Understanding its epidemiology is crucial for optimizing care and implementing preventive strategies.

Attitudes and beliefs of Brazilian physical therapists about chronic nonspecific low back pain and its impact on clinical decision-making: An Online Survey Study

INTRODUCTION

Recent clinical practice guidelines recognize the importance of the biopsychosocial model in the management of patients with chronic nonspecific low back pain, and the attitudes and beliefs of physical therapists are believed to directly influence clinical decision-making.

OBJECTIVE

To investigate factors associated to biomedical and biopsychosocial approaches and its impact on attitudes and beliefs to treat patients with chronic nonspecific low back pain.

METHOD

This was a cross-sectional study conducted online with 302 Brazilian physiotherapists who treat patients with nonspecific chronic low back pain. The HC-PAIRS and PABS-PT were used to investigate attitudes and beliefs low back pain. Descriptive statistics and bivariate analyses were performed for association tests, comparing the scores on the scales between groups. In addition, multiple linear regression analyses were also used.

RESULTS

The overall mean score of HC-PAIRS was 54.0 (9.0), and the biomedical and biopsychosocial factors of PABS-PT were 29.7 (9.0) and 36.2 (5.3), respectively. Significant associations were identified between gender (p = 0.04) and level of academic training (p < 0.00) and both scales, HC-PAIRS and PABSPT, respectively.

CONCLUSION

Sociodemographic characteristics were associated with the beliefs of physical therapists; a higher score for treatment options for chronic low back pain based on the biomedical mode, was observed in female physiotherapist and in physios with higher education level. Variables such as age and length of professional experience indicated that the lower the age and/or length of professional experience of Brazilian physical therapists, the stronger the belief in the relationship between low back pain and tissue damage.

The effects of in-person-supervised, tele-supervised, and unsupervised stabilization exercises on pain, functionality, and kinesiophobia in patients with chronic low back pain: a randomized, single-blind trial

BACKGROUND

The efficacy of various supervision methods for stabilization exercises in patients with chronic low back pain (CLBP) remains uncertain.

OBJECTIVE

To evaluate the impact of supervised and unsupervised stabilization exercises in patients with CLBP.

METHODS

Sixty-six participants were assigned to the in-person-supervised, tele-supervised, or unsupervised groups. All participants received a 20-30-minute exercise program three times a week for 4 weeks. We assessed functionality (Oswestry Disability Index), pain intensity (Numeric Rating Scale), and kinesiophobia (Tampa Scale of Kinesiophobia) before and after the 4 weeks. The outcomes were analyzed using effect size, minimum clinically important difference (MCID), minimal detectable change (MDC), Wilcoxon test, and post hoc analyses.

RESULTS

While the unsupervised group improved in all measures (p < .05) both the tele-supervised (p = .001) and in-person-supervised (p < .001) groups achieved superior functionality exceeding MDC. The in-person-supervised group demonstrated greater functionality (p < .001) than the tele-supervised group, exceeding MCID. Pain intensity decreased in the tele-supervised (p = .011) and in-person-supervised groups (p < .001) compared to the unsupervised group, exceeding MCID and MDC. No significant difference was found in post-treatment NRS score changes between the supervised groups (p = .071). The in-person-supervised group displayed a greater reduction in kinesiophobia than the tele-supervised (p < .001) and unsupervised groups (p < .001) but not exceeding MCID or MDC. Effect sizes were large within and between groups except for a small effect size between the tele-supervised and unsupervised groups in kinesiophobia.

CONCLUSION

While tele-supervised stabilization exercises alleviate pain and enhance functionality, in-person-supervised exercises may be more effective in improving functionality and reducing kinesiophobia in patients with CLBP.

The Effects of Combined Motor Control and Isolated Extensor Strengthening versus General Exercise on Paraspinal Muscle Morphology, Composition, and Function in Patients with Chronic Low Back Pain: A Randomized Controlled Trial

Low back pain (LBP), a globally widespread and persistent musculoskeletal disorder, benefits from exercise therapy. However, it remains unclear which type leads to greater changes in paraspinal muscle health. This study aimed to (1) compare the effects of a combined motor control and isolated lumbar extension exercise (MC+ILEX) versus a general exercise (GE) intervention on paraspinal muscle morphology, composition, and function, and (2) examine whether alterations in paraspinal muscle health were correlated with improvements in pain, function, and quality of life. Fifty participants with chronic LBP were randomly assigned to each group and underwent a 12-week supervised intervention program. Magnetic resonance imaging and ultrasound assessments were acquired at baseline, 6 and 12 weeks to examine the impact of each intervention on erector spinae (ES) and multifidus (MF) muscle size (cross-sectional area, CSA), composition, and function at L4-L5 and L5-S1. Self-reported questionnaires were also acquired to assess participant-oriented outcomes. Our findings indicated that the MC+ILEX group demonstrated greater improvements in MF and ES CSA, along with MF thickness at both levels (all p < 0.01). Both groups significantly improved in pain, function, and quality of life. This study provided preliminary results suggesting that an MC+ILEX intervention may improve paraspinal morphology while decreasing pain and disability.

Relationship between Time Elapsed Since Pain Onset and Efficacy of Pain Relief in Patients Undergoing Lumbar Percutaneous Epidural Adhesiolysis

PURPOSE

The aim of this study was to investigate the relationship between pain duration and pain relief after epidural adhesiolysis.

MATERIALS AND METHODS

Patients with low back pain who underwent lumbar epidural adhesiolysis were enrolled. A clinically significant reduction in pain score was defined as a ≥30% reduction at 6-month follow-up evaluation. Variables were compared based on pain duration categories. Changes in pain scores and pain outcome were also compared. Logistic regression analysis was conducted to identify factors associated with pain relief after adhesiolysis.

RESULTS

A total of 169 patients, including 77 (45.6%) patients with a favorable pain outcome, were included for analysis. Patients with a pain duration ≥3 years reported lower baseline pain scores and showed more frequent severe central stenosis. Pain scores significantly decreased over time after the procedure except in patients with a pain duration ≥3 years. Most patients who experienced pain for ≥3 years showed poor pain relief (80.8%), unlike other pain duration categories (pain duration <3 months=48.1%, 3 months-1 year=51.8%, 1-3 years=48.6%). A pain duration ≥3 years and lower baseline pain score were independent factors associated with an unfavorable pain outcome.

CONCLUSION

Pain lasting ≥3 years prior to lumbar epidural adhesiolysis was associated with worse outcomes in terms of pain relief. Therefore, this intervention should be considered early before pain chronification in patients with low back pain.

Investigating Functional Impairment in Chronic Low Back Pain: A Qualitative Study from the Patients and Specialists' Perspectives

Prompt and appropriate treatment of chronic low back pain (cLBP) is of the utmost importance for preventing relevant disability, high burden of disease, and increasing costs for the healthcare system. Recently, the concept of functional impairment has been associated with any type of chronic pain, and mounting attention has been paid to extending the aims of treatment beyond mere pain remission, including restoration of working capacity, everyday functioning, mobility, and quality of life. Nevertheless, a shared definition of functionality is still lacking. Notably, different specialists involved in the treatment of cLBP such as general practitioners, orthopedists, pain therapists, and physiatrists, and patients themselves have different opinions on what "functional impairment" actually means. On these premises, a qualitative interview study was performed to investigate how the concept of "functionality" is interpreted by different specialists involved in the management of cLBP, and by patients. Overall, all different specialists agreed that functionality should be assessed in clinical practice. However, in spite of several instruments available for evaluating functionality, no homogeneity of behavior is observable.