Work-related Musculoskeletal Disorders and Quality of Life Among Staff Nurses in a Tertiary Care Hospital of Bangalore

BACKGROUND

Work-related musculoskeletal disorder (WMSD) is a collective and descriptive term used for the symptoms caused or aggravated by work. Significant WMSDs can affect the productivity and Quality of Life (QOL) of nurses. This study was undertaken to estimate the prevalence of WMSDs, identify their risk factors, and find the association, if any. This study also assessed the quality of life of nurses and its association with WMSDs.

METHODS

This cross-sectional study was conducted among 207 staff nurses at a tertiary care hospital in Bangalore for a period of 7 months (June-2018 to Dec-2018). The nurses were stratified based on their parent department into three broad categories - Medical, Surgical, and Operation Theatre. Stratified random sampling was followed to obtain the required number of nurses from each stratum. Data was collected using a pre-tested semi-structured questionnaire, Nordic Musculoskeletal Questionnaire (NMQ), clinical examination tests, and WHOQOL-BREF.

RESULTS

The annual prevalence of WMSDs among the study subjects using NMQ was 168 (81.2%). The prevalence of WMSDs based on clinical examination tests was 67 (32.4%). Repetitive movements at work (OR 9.3, 95% CI 3.4-25.7), working in abnormal postures for prolonged periods (OR 4.7, 95% CI 1.7-12.9), and working even when sick (OR 5.3, 95% CI 2.0-14.1) were the risk factors for WMSDs (P < 0.05). No significant association was found between reported WMSDs (according to NMQ) and QOL.

CONCLUSION

Our study found that the prevalence of WMSDs was high among the staff nurses and it did not affect their QOL significantly. Workshops and training sessions on ergonomics should be regularly conducted at the workplace to prevent WMSDs.

A method for the risk assessment of biomechanical overload in hospital physiotherapists

BACKGROUND

In physiotherapists, biomechanical overload risk assessment (RA) is particularly complex due to the tasks' variability. The present study aims to propose a new methodology, named Whole Body RA Biomechanical Overload (WB-RAMBO), to assess the risk in the activities performed by physiotherapists.

METHODS

Each type of intervention was broken down into elementary operations. The risk factors (force, repetitiveness, and incongruous postures) were recorded and evaluated for each of these. For each task, the risk level was obtained by integrating the results of multiple ergonomic methods among those proposed by the international literature. To verify and validate the obtained results, we reviewed the medical records of health surveillance carried out on physiotherapists.

RESULTS

From the ergonomic point of view, RA shows a situation of acceptability. The observed slight dysergonomies are diluted in the work shift and allow an optimal functional recovery of the musculoskeletal system.

CONCLUSIONS

This method proposes a RA for each operation performed. A work plan subjected to such a peculiar RA can be redesigned and adapted to the company's and the hypersusceptible worker's organizational needs.

Evaluation of work ability index and its association with job stress and musculoskeletal disorders among midwives during the Covid-19 pandemic

BACKGROUND

Musculoskeletal disorders (MSDs) and work-related stress are among the factors that can negatively affect work ability. Given the importance of midwives' health, this study aims to evaluate the work ability of midwives and to investigate its association with the prevalence of MSDs and work-related stress in midwifery.

METHODS

Ninety-one midwives participated in this study. Three questionnaires, including Nordic musculoskeletal questionnaire (NMQ) plus body map, Persian version of work ability index (WAI) questionnaire, and Health and Safety Executive (HSE) job stress questionnaire, were used to collect data. Finally, the association of MSDs, work-related stress, and individual characteristics with WAI among midwives was investigated.

RESULTS

The highest rates of pain and discomfort were reported in the lower back and neck. The mean job stress was 116.08 with the highest scores on demand, role, and control subscales. The work ability among midwives was at an acceptable level of 39.07 on average. Inter-variable association analysis showed that the work ability was significantly associated with pain in the past 12 months and the number of coexisting MSDs. Job stress was not associated with work ability.

CONCLUSIONS

Midwives' WAI was at an acceptable level despite high prevalence of MSDs in midwives, the confirmation of the possible correlation between MSDs and work ability, as well as the high job stress in midwifery. Since the present study was conducted during the Covid-19 pandemic, the high stress in midwives may be partly due to the pandemic and may not be permanent. However, this level of stress may reduce the midwives' work ability over a long time.

Manual Therapy With Rest as a Treatment for Established Inflammation and Fibrosis in a Rat Model of Repetitive Strain Injury

Background: Repetitive strain injuries caused by repetitive occupational work are difficult to prevent for multiple reasons. Therefore, we examined the effectiveness of manual therapy (MT) with rest to treat the inflammation and fibrosis that develops through the performance of a repetitive task. We hypothesized that this treatment would reduce task-induced sensorimotor declines and neuromuscular inflammation. Methods: Twenty-nine female Sprague-Dawley rats performed a reaching and lever-pulling task for 14weeks. All ceased performing the task at 14weeks. Ten were euthanized at this timepoint (TASK). Nine received manual therapy to their upper extremities while resting 7weeks (MTR); 10 were assigned to rest alone (REST). Ten additional food restricted rats were included that neither performed the task nor received manual therapy (FRC). Results: Confirming previous experiments, TASK rats showed behavioral changes (forepaw mechanical hypersensitivity, reduced grip strength, lowered forelimb/forepaw agility, and noxious cold temperature sensitivity), reduced median nerve conduction velocity (NCV), and pathological tissue changes (myelin degradation, increased median nerve and muscle inflammation, and collagen production). Manual therapy with rest (MTR) ameliorated cold sensitivity seen in REST rats, enhanced muscle interleukin 10 (IL-10) more than in REST rats, lead to improvement in most other measures, compared to TASK rats. REST rats showed improved grip strength, lowered nerve inflammation and degraded myelin, and lowered muscle tumor necrosis factor alpha (TNFα) and collagen I levels, compared to TASK rats, yet maintained lowered forelimb/forepaw agility and NCV, and increased neural fibrosis. Conclusion: In our model of repetitive motion disorder, manual therapy during rest had modest effects on behavioral, histological, and physiological measures, compared to rest alone. These findings stand in contrast to the robust preventive effects of manual therapy in this same model.

Why Workers Hesitate to Report Their Work-Related Musculoskeletal Symptoms: A Survey at a Korean Semiconductor Company

Underreporting work-related musculoskeletal disorders (WRMSD) has been an issue in South Korea. The purpose of this survey was to figure out how many employees of a semiconductor and liquid crystal display company in South Korea experience WRMSDs and what the possible obstacles in reporting to the company are. A survey was developed with demographic questions, perceived WRMSD symptoms, and reasons for reporting or not reporting WRMSD. The survey was distributed via the company's intranet to all employees (24,380) whose employee identification number ended with an odd number. A total of 2862 employees completed the survey and the response rate was 11.7%. A total of 55.2% of respondents had felt at least one musculoskeletal symptom during the past year. More than 40% of workers who had experienced pain or discomfort during the past year thought their symptoms were more than 50%. work-related. More than one-fourth of respondents answered that they did not report their symptoms to the company more than once. The open-ended answers for not reporting WRMSD were categorized into seven common reasons. The reasons for not reporting WRMSD in previous studies show a combination of personal, organizational, socioeconomical, and cultural factors. To encourage and manage WRMSD effectively, seven recommendations of authors are described.

Work-Related Musculoskeletal Disorders Among Hospital Midwives in Chenzhou, Hunan Province, China and Associations with Job Stress and Working Conditions

Background

Midwives have a high risk of work-related musculoskeletal disorders (WMSDs), which are the leading cause of pain and disability. However, the association between job stress and WMSDs among midwives has not been studied. The aim of this project was to specifically describe relationships between the job stress and WMSDs among a sample of hospital midwives in Chenzhou, Hunan Province, China.

Methods

We conducted a cross-sectional study among a sample of 769 eligible midwives in the city of Chenzhou in Hunan Province, China from May 2018 to January 2019. All participants completed a questionnaire regarding the presence and severity of different pain symptoms and job stress assessed by the Korean occupational stress scale.

Results

A total of 597 participants responded (77.6%), and 491 (82.2%) reported that they had experienced WMSDs at some time over a 12-month period. The most common pain site was low back (72.7%), followed by the neck (52.8%) and shoulders (42.7%). We revealed that various aspects of job stress were associated with WMSDs in the current study, namely “Owing to my workload, I always feel time pressure” (OR, 2.05; 95% CI: 1.28–3.28), “My job has become increasingly overbearing” (OR, 2.34; 95% CI: 1.46–3.77), “My work requires long lasting concentration” (OR, 3.50; 95% CI: 2.13–5.74), “I have to do various jobs simultaneously”, (OR, 3.15; 95% CI: 1.93–5.14)), “My work requires creativity” (OR, 2.15; 95% CI: 1.31–3.54), “My work requires a high level of skill or knowledge” (OR, 2.83; 95% CI: 1.67–4.80), “My supervisor is helpful in getting the job done” (OR, 0.53; 95% CI: 0.33–0.84), “I have someone who understands my difficulties at work” (OR, 0.53; 95% CI: 0.34–0.85), “Undesirable changes (ie, downsizing) will come to my job” (OR, 3.28; 95% CI: 2.01–5.77), “My company provides me with sufficient organizational support” (OR, 0.47; 95% CI: 0.29–0.74), “Departments cooperate each other without conflicts” (OR, 0.50; 95% CI: 0.32–0.80), “I am provided with the opportunity to develop my capacity” (OR, 0.57; 95% CI: 0.36–0.91) and “My company climate is authoritative and hierarchical” (OR: 3.21; 95% CI: 1.97-5.23).

Conclusion

Overall, this study suggests that job stress has an important influence on WMSDs among a sample of hospital midwives in Chenzhou, Hunan Province, China. Given the multifaceted nature of identified risk, a comprehensive approach to reduce this risk is clearly required and a job stress management program will be essential.

Ergonomics and Work-Related Musculoskeletal Disorders: Characteristics Among Female Interventionists

Interventional radiology is a procedural specialty that performs minimally invasive operations under image guidance. Currently, there are inadequate ergonomic protocols for work-related musculoskeletal disorder (WMSD) prevention in interventional radiology (IR), and there is a paucity of information discerning gender differences in WMSDs. This article reviews current literature that addresses WMSDs in female physicians practicing interventional and fluoroscopic procedures, including interventional radiology, interventional cardiology, electrophysiology, vascular surgery, orthopedic surgery, neurosurgery, and gastroenterology. We searched PubMed and EBSCOhost databases for ergonomic studies that reported female physician WMSDs in the specialties listed above. After a thorough evaluation for inclusion based on eligibility criteria, 11 studies were included. From this search, there was poor female representation, averaging 25.7% of respondents. Several characteristics identified across the studies were that women were generally shorter, wore smaller glove sizes, and were younger than their male colleagues. Seventy-two percent of female proceduralists reported WMSDs versus 46.6% of their male colleagues. Additionally, women may experience more upper extremity pain than lumbar pain, which men commonly reported. Potential contributing factors to WMSDs are the size and design of procedural tools and the possible predisposition of female physicians to experience upper extremity WMSDs while performing the same operations as men. As more women enter medicine and pursue careers in procedural fields like interventional radiology, it is essential to address these discrepancies and develop ergonomically sound solutions for women.

Landscaping Work: Work-related Musculoskeletal Problems and Ergonomic Risk Factors

Background

Work-related musculoskeletal disorders (WRMSDs) are considered one of the foremost reason of disability globally with significant economic impact due to loss of productivity. Landscaping work is considered a high-risk industry in the service sector. Landscape workers are susceptible to WRMSDs as they are exposed to high physical demands at work, and exert significant physical effort to complete daily repetitive tasks during long working hours. The aim of this study was to determine the prevalence of WRMSDs and to identify the ergonomic risk factors among landscape workers in a university setting.

Methods

This was a cross-sectional study conducted among landscape workers at a public university in Kota Kinabalu, Sabah. Interviews were conducted due to low literacy of the participants, using structured questionnaires which consist of personal characteristics, work descriptions, ergonomic risk factors, as well as self-reported WRMSD symptoms using NORDIC questionnaire. Ergonomic risk assessment (ERA) using rapid entire body assessment (REBA) was then conducted.

Results

Fifty-five of 60 landscape workers agreed to participate (92% response rate). The overall prevalence of WRMSDs among landscape workers was 85.5%. The highest prevalence involving the shoulder (65.5%), followed by neck (23.6%), wrist/hand (23.6%), and lower back (20.0%) regions based on their self-reported WRMSD symptoms over the past 12 months. Awkward posture was the risk factor identified through ergonomic risk assessment (ERA) conducted by ERA trained personnel. None of the working postures during assessment was noted to be appropriate. Although no significant difference was associated with self-reported WRMSDs, majority of the landscape workers (71%) were classified as medium ergonomic risk group using REBA, with the remaining 29% considered to be high ergonomic risk group.

Conclusion

Improvement in awareness campaigns, modification of working tools, and enhanced administrative approaches are among the control and prevention measures recommended to delay or prevent the occurrence of WRMSDs.

Work-related musculoskeletal disorders and associated risk factors among urban metropolitan hairdressers in India

Objectives

Ergonomic hazards account for a substantial proportion of work‐related diseases and injuries among hairdressers. Awkward posture during work, repetitive movements, prolonged standing, and long working periods to carry out work activities cause mechanical load on the joints and work‐related musculoskeletal disorders (WMSDs). This study investigated the musculoskeletal problems among urban hairdressers and associated risk factors.

Methods

This study investigates the prevalence of WMSDs among 768 study subjects (384 hairdressers and control subjects each) from Ahmedabad and New Delhi metropolis in India. Univariate statistical analysis was carried out along with 95% confidence interval for effect estimates.

Results

Findings reveal that the nearly half of the hairdressers suffered from knee and foot pain (49.5%), followed by lower back pain (39.8%) and upper back pain (38.8%). The neck pain and shoulder pain were reported by more than 25% hairdressers. The odds of developing neck pain (OR = 2.04; 95% CI 1.37‐3.06) and shoulder pain (OR = 1.85; 95% CI 1.25‐2.73) were significantly higher than control. The female hairdressers were more likely to experience work‐related musculoskeletal disorder (OR = 2.63; 95% CI 1.18‐5.86) than male counterparts. Hairdressers within the age of 18‐35 years had significantly higher occurrence of musculoskeletal disorders with longer duration of working hours at the workplace. Longer daily work hours (>12 hours) posed significantly higher risk (OR = 2.47; 95% CI 1.39‐4.38) of experiencing MSD for hairdressers.

Conclusion

A very large proportion of hairdressers suffered with work‐related musculoskeletal disorders. The long daily working hours and gender of the hairdresser are associated with increased risk of developing WMSDs.

A qualitative study of health information-seeking behavior on the Internet among information technology professionals

BACKGROUND

The motivation to seek health information on the Internet for individuals has been varied. The purpose of this paper was to explore the perspectives and experiences about online health information seeking in information technology (IT) professionals.

MATERIALS AND METHODS

A qualitative case study research design was employed to examine the behavior of 15 IT professionals from a state organization in the East Coast of the United States of America. Convenience sampling was used to identify the setting, and purposeful sampling was used to select the participants. A survey questionnaire was used as a recruitment tool, and in-depth individual interviews with standardized semi-structured questions were used to collect data.

RESULTS

Findings illustrated that the Internet was the first source of reference for wellness and prevention information to maintain a healthy lifestyle, and to alleviate and prevent work-related musculoskeletal disorders (WMSDs). The themes that emerged from the study were that the IT professionals searched the Internet for information to self-educate about medical conditions, to maintain fitness, communicate with health-care professionals, decide their treatment options, and to make lifestyle modifications such as ergonomic adjustment of their workstation, postural adjustments, and changing negative health behaviors.

CONCLUSION

The results of this study provide practical implications for organizations and health professionals in providing health education to prevent WMSDs as participants sought health information online to take actions and collaborate with their health-care professionals and actively contributed to their medical health decisions. This underscores a valuable opportunity for health-care providers and public health officials to become more proactive by providing their patients with quality health information outside their office through the Internet by referring them to credible website sources.

Forces: A Motion Capture-Based Ergonomic Method for the Today's World

Approximately three of every five workers are affected by musculoskeletal disorders, especially in production environments. In this regard, workstation ergonomic evaluations are especially beneficial for conducting preventive actions. Nevertheless, today's context demonstrates that traditional ergonomic methods should lead to smart ergonomic methods. This document introduces the Forces ergonomic method, designed considering the possibilities of inertial motion capture technology and its applicability to evaluating actual workstations. This method calculates the joint risks for each posture and provides the total risk for the assessed workstation. In this calculation, Forces uses postural measurement and a kinetic estimation of all forces and torques that the joints support during movement. This paper details the method's fundamentals to achieve structural validity, demonstrating that all parts that compose it are logical and well-founded. This method aims to aid prevention technicians in focusing on what matters: making decisions to improve workers' health. Likewise, it aims to answer the current industry needs and reduce musculoskeletal disorders caused by repetitive tasks and lower the social, economic, and productivity losses that such disorders entail.

Guidelines for Working Heights of the Lower-Limb Exoskeleton (CEX) Based on Ergonomic Evaluations

The aim of this study was to evaluate the muscle activities and subjective discomfort according to the heights of tasks and the lower-limb exoskeleton CEX (Chairless EXoskeleton), which is a chair-type passive exoskeleton. Twenty healthy subjects (thirteen males and seven females) participated in this experiment. The independent variables were wearing of the exoskeleton (w/ CEX, w/o CEX), working height (6 levels: 40, 60, 80, 100, 120, and 140 cm), and muscle type (8 levels: upper trapezius (UT), erector spinae (ES), middle deltoid (MD), triceps brachii (TB), biceps brachii (BB), biceps femoris (BF), rectus femoris (RF), and tibialis anterior (TA)). The dependent variables were EMG activity (% MVC) and subjective discomfort rating. When wearing the CEX, the UT, ES, RF, and TA showed lower muscle activities at low working heights (40-80 cm) than not wearing the CEX, whereas those muscles showed higher muscle activities at high working heights (100-140 cm). Use of the CEX had a positive effect on subjective discomfort rating at lower working heights. Generally, lower discomfort was reported at working heights below 100 cm when using the CEX. At working heights of 100-140 cm, the muscle activity when wearing the CEX tended to be greater than when not wearing it. Thus, considering the results of this study, the use of the lower-limb exoskeleton (CEX) at a working height of 40-100 cm might reduce the muscle activity and discomfort of whole body and decrease the risk of related disorders.

Work-Related Risk Assessment According to the Revised NIOSH Lifting Equation: A Preliminary Study Using a Wearable Inertial Sensor and Machine Learning

Many activities may elicit a biomechanical overload. Among these, lifting loads can cause work-related musculoskeletal disorders. Aspiring to improve risk prevention, the National Institute for Occupational Safety and Health (NIOSH) established a methodology for assessing lifting actions by means of a quantitative method based on intensity, duration, frequency and other geometrical characteristics of lifting. In this paper, we explored the machine learning (ML) feasibility to classify biomechanical risk according to the revised NIOSH lifting equation. Acceleration and angular velocity signals were collected using a wearable sensor during lifting tasks performed by seven subjects and further segmented to extract time-domain features: root mean square, minimum, maximum and standard deviation. The features were fed to several ML algorithms. Interesting results were obtained in terms of evaluation metrics for a binary risk/no-risk classification; specifically, the tree-based algorithms reached accuracies greater than 90% and Area under the Receiver operating curve characteristics curves greater than 0.9. In conclusion, this study indicates the proposed combination of features and algorithms represents a valuable approach to automatically classify work activities in two NIOSH risk groups. These data confirm the potential of this methodology to assess the biomechanical risk to which subjects are exposed during their work activity.

Prevalence of musculoskeletal disorders amongst flower farm workers in Kenya

Background

Work-related musculoskeletal disorders (WMSDs) are a global public concern for health and social-care systems, as well as individuals. They are the second-most prevalent cause of disability globally.

Objectives

The primary objective was to determine the prevalence of WMSDs amongst flower farm workers. The secondary objective was to determine the association between the socio-demographic characteristics and the presence of WMSDs in the previous 12-month period.

Method

A cross-sectional descriptive study was conducted. A sample of 270 participants was drawn from 897 farm workers. Quantitative data related to musculoskeletal disorders were collected using the Nordic Musculoskeletal Questionnaire (NMQ). Descriptive statistics were undertaken using frequencies and percentages. Inferential statistics were analysed using a chi-squared test (X²) based on an alpha level of p < 0.05.

Results

A total of 184 (68.1%) respondents reported musculoskeletal discomfort. Amongst the 184 respondents, 178 were performing general farm work. Most 103 (38.1%) of the WMSDs were reported in the lower back. There was a strong association between job designation as a general worker (p = 0.016), an older age (p = 0.027) and having worked for a long time as a farm worker (p = 0.041) and WMSDs.

Conclusion

Flower farm workers in Kenya were found to be heavily burdened by WMSDs. Furthermore, the job designation, older age, as well as having worked for a long time, predisposes workers to the risk of developing WMSDs.

Clinical implications

The high prevalence of WMSDs necessitates policy reform in the flower farm industry.

Impact of physical activity levels on musculoskeletal symptoms and absenteeism of workers of a metallurgical company

Introduction:

Physical inactivity is the fourth biggest risk factor for global mortality. In Brazilian metallurgical industries, workers present a high incidence of musculoskeletal symptoms as one of the main causes of absenteeism.

Objectives:

To investigate the impact of physical activity levels and leisure-time physical exercise on musculoskeletal symptoms and absenteeism among administrative and production workers of a metallurgical industry.

Methods:

This is a transversal study that included 206 workers. We applied the Modified Baecke Questionnaire, leisure-time physical activity and leisure-time physical exercise domains), as well as the Nordic Musculoskeletal Questionnaire regarding symptom occurrence and severity scores (1-4), and compared levels of absenteeism. Our sample was divided into 2 groups: production and office workers.

Results:

We observed a significant difference between the groups regarding symptom severity score 3 (p = 0.03) and absenteeism (p = 0.02); the production group presented higher results. There was a correlation between leisure-time physical exercise and absenteeism (r = -0.57, p = 0.01) and between leisure-time physical activity and absenteeism (r = -0.55, p = 0.01) in the production worker group, whereas in the office worker group, leisure-time physical activity and symptom severity score 4 were correlated (r = 0.63, p = 0.02).

Conclusions:

Production workers presented higher occurrences of symptom severity score 3 and absenteeism; increased levels of leisure-time physical activity and physical exercise reduced absenteeism. Leisure-time physical activity was correlated with severity score 4 in the office worker group.

Influence of Risk Perception on Task and Contextual Performance: A Case of Work-Related Musculoskeletal Disorders in Nurses

Assessing the risk perception of workers can be very informative in predicting their behavioral outcomes, including task and contextual performance. Yet, research to assess the effect of risk perception on task performance and contextual performance remains scarce. Thus, this study explored the effect of risk perception of work-related musculoskeletal disorders on task and contextual performance in nurses. This study further examined safety behavior as a mediator of these relationships. Using structural equation modeling, the researchers examined these relationships by employing a cross-sectional survey with a quantitative approach. The data was collected via questionnaires from 382 nurses who work in three major hospitals in Accra Metropolis, Ghana. The results showed that nurses' risk perception positively influenced their task and contextual performance, and that safety behavior partially mediated the effects of risk perception on task and contextual performance. This study offers a theoretical framework and empirical evidence for the concept of risk perception and its association with safety behavior, task, and contextual performance. To the best of our knowledge, this is the first study to assess the relationships that exist among these variables. Thus, future studies are needed to verify the causality of the relationships.

Blocking CTGF/CCN2 reverses neural fibrosis and sensorimotor declines in a rat model of overuse-induced median mononeuropathy

Encapsulation of median nerves is a hallmark of overuse-induced median mononeuropathy and contributes to functional declines. We tested if an antibody against CTGF/CCN2 (termed FG-3019 or Pamrevlumab) reduces established neural fibrosis and sensorimotor declines in a clinically relevant rodent model of overuse in which median mononeuropathy develops. Young adult female rats performed a high repetition high force (HRHF) lever-pulling task for 18 weeks. Rats were then euthanised at 18 weeks (HRHF untreated), or rested and systemically treated for 6 weeks with either an anti-CCN2 monoclonal antibody (HRHF-Rest/FG-3019) or IgG (HRHF-Rest/IgG), with results compared with nontask control rats. Neuropathology was evident in HRHF-untreated and HRHF-Rest/IgG rats as increased perineural collagen deposition and degraded myelin basic protein (dMBP) in median nerves, and increased substance P in lower cervical dorsal root ganglia (DRG), compared with controls. Both groups showed functional declines, specifically, decreased sensory conduction velocity in median nerves, noxious cold temperature hypersensitivity, and grip strength declines, compared with controls. There were also increases of ATF3-immunopositive nuclei in ventral horn neurons in HRHF-untreated rats, compared with controls (which showed none). FG-3019-treated rats showed no increase above control levels of perineural collagen or dMBP in median nerves, Substance P in lower cervical DRGs, or ATF3-immunopositive nuclei in ventral horns, and similar median nerve conduction velocities and thermal sensitivity, compared with controls. We hypothesize that neural fibrotic processes underpin the sensorimotor declines by compressing or impeding median nerves during movement, and that inhibiting fibrosis using an anti-CCN2 treatment reverses these effects.

Work-related musculoskeletal disorders and injuries among emergency medical technicians and paramedics: A comprehensive narrative review

The aim of this article was to review the current knowledge relating to work-related musculoskeletal disorders (WRMDs) and non-fatal injuries in emergency medical technicians and paramedics (EMTs-Ps). A literature search was conducted in PubMed, Google Scholar, and Clinical Key. The annual prevalence of back pain ranged from 30% to 66%, and back injuries and contusions from 4% to 43%. Falls, slips, trips, and overexertion while lifting or carrying patients or instruments ranged from 10% to 56%, with overexertion being the most common injury. Risk factors were predominantly lifting, working in awkward postures, loading patients into the ambulance, and cardiopulmonary resuscitation procedures. Lack of job satisfaction and social support was associated with WRMDs and injuries. EMTs-Ps had the highest rate of worker compensation claim rates compared to other healthcare professionals. Positive ergonomic intervention results included electrically powered stretchers, backboard wheeler, descent control system, and the transfer sling.

The Effects of Upper-Body Exoskeletons on Human Metabolic Cost and Thermal Response during Work Tasks-A Systematic Review

BACKGROUND

New wearable assistive devices (exoskeletons) have been developed for assisting people during work activity or rehabilitation. Although exoskeletons have been introduced into different occupational fields in an attempt to reduce the risk of work-related musculoskeletal disorders, the effectiveness of their use in workplaces still needs to be investigated. This systematic review focused on the effects of upper-body exoskeletons (UBEs) on human metabolic cost and thermophysiological response during upper-body work tasks.

METHODS

articles published until 22 September 2020 were selected from Scopus, Web of Science, and PubMed for eligibility and the potential risk of bias was assessed.

RESULTS

Nine articles resulted in being eligible for the metabolic aspects, and none for the thermal analysis. All the studies were based on comparisons between conditions with and without exoskeletons and considered a total of 94 participants (mainly males) performing tasks involving the trunk or overhead work, 7 back-support exoskeletons, and 1 upper-limb support exoskeleton. Eight studies found a significant reduction in the mean values of the metabolic or cardiorespiratory parameters considered and one found no differences.

CONCLUSIONS

The reduction found represents a preliminary finding that needs to be confirmed in a wider range of conditions, especially in workplaces, where work tasks show different characteristics and durations compared to those simulated in the laboratory. Future developments should investigate the dependence of metabolic cost on specific UBE design approaches during tasks involving the trunk and the possible statistical correlation between the metabolic cost and the surface ElectroMyoGraphy (sEMG) parameters. Finally, it could be interesting to investigate the effect of exoskeletons on the human thermophysiological response.

The Rise of Shop Floor Ergonomics: A Personal Perspective

OCCUPATIONAL APPLICATIONS Based on a 45-year career as a practitioner in industrial ergonomics, I offer in this paper a personal memoir on how ergonomics came to the shop floor in North America, involving ordinary workers in an early effort to prevent what was at the time an unknown problem - work-related Musculoskeletal Disorders. The actions included the beginning of a low-tech, practical improvement process that is still effective today. In total, the experience can provide encouragement to everybody to be confident in their ability when trying new endeavors and to remember that small initial steps can eventually lead to major change.

Nordic Assessment of Occupational Disorders among Dental Students and Dentists in Saudi Arabia

Objectives

Ergonomics and the avoidance of occupational or work-related musculoskeletal disorders (WRMSDs) are crucial for a future dentist's career, as studies have linked WRMSDs to some serious complications, including early retirement. This study aimed to investigate the level of knowledge and awareness about ergonomics and the prevalence of WRMSDs among dental students and dentists in Makkah province, Saudi Arabia.

Materials and Methods

A cross-sectional study was conducted of 322 dental students and dentists from two universities in Makkah province, Saudi Arabia, using a self-report questionnaire to measure ergonomic awareness and the Nordic Musculoskeletal Questionnaire to measure WRMSDs.

Results

Among the respondents, only 4.82% could correctly explain ergonomics, 14.16% had attended a course or workshop on ergonomics, 55.12% were familiar with preventive techniques for WRMSDs, and 37.95% were familiar with remedies/treatment for WRMSDs. Females were significantly more aware of WRMSDs than males. There was 81.33% who had trouble (pain, aches, or discomfort) in one or more parts of their body during the previous 12 months. The most common sites for WRMSDs were the upper back (48.19%), wrists/hands (44.27%), lower back (43.98%), neck (36.45%), and shoulder (33.43%). In most body parts, WRMSDs were more common among males and participants from a governmental university than among females or those from a private university.

Conclusion

Both dental students and dentists in Saudi Arabia lacked awareness of ergonomics and experienced high levels of WRMSDs. More educational efforts and attempts are needed to boost dental professionals' knowledge about musculoskeletal disorders related to dental profession and built the skills to cope with them.

Work-related musculoskeletal disorders in nurses working in the Kingdom of Saudi Arabia

BACKGROUND

Nurses are considered the group of healthcare workers with the highest prevalence of Work-Related Musculoskeletal Disorders (WRMDs). The most common physical demands of nursing that have been found to contribute to WRMDs include lifting, working in awkward postures, stooping, and repetitive actions. Occupational therapists (OT) have a significant role in preventing WRMDs.

OBJECTIVE

The purpose of this study was to explore that magnitude of the WRMDs among nurses in the Kingdom of Saudi Arabia (KSA). Exploring the role of OT in increasing awareness and prevention of WRMDs among nurses.

METHODS

The study was conducted using a cross-sectional questionnaire design. Data was collected using the Nordic Musculoskeletal Questionnaire (NMQ). Nurses at King Abdulaziz Medical City, Riyadh, KSA, were the target of this study.

RESULTS

Ninety-four nurses participated in this study. Most of them (63.8%) indicated that they experienced discomfort during the last 12 months in their lower back, followed by shoulders (50%), and upper back (48.9%). Twenty-four (25.5%) of the participants who indicated experiencing low back discomfort, also indicated that this discomfort reduced their work activity, and this same number indicated that the discomfort reduced their leisure activity.

CONCLUSION

Nurses are at high risk for WRMDs. Occupational therapists have an important role to play in prevention. Measures should be taken by hospital administrators, the rehabilitation departments, as well as the nurses themselves to manage this global problem. Special measures should be implemented to make sure that they work in ergonomically appropriate environment, and implement proper body mechanics to limit their chances of encountering WRMDs.

Development and Validation of a Wearable Inertial Sensors-Based Automated System for Assessing Work-Related Musculoskeletal Disorders in the Workspace

The industrial societies face difficulty applying traditional work-related musculoskeletal disorder (WMSD) risk assessment methods in practical applications due to in-situ task dynamics, complex data processing, and the need of ergonomics professionals. This study aims to develop and validate a wearable inertial sensors-based automated system for assessing WMSD risks in the workspace conveniently, in order to enhance workspace safety and improve workers’ health. Both postural ergonomic analysis (RULA/REBA) and two-dimensional static biomechanical analysis were automatized as two toolboxes in the proposed system to provide comprehensive WMSD risk assessment based on the kinematic data acquired from wearable inertial sensors. The effectiveness of the developed system was validated through a follow-up experiment among 20 young subjects when performing representative tasks in the heavy industry. The RULA/REBA scores derived from our system achieved high consistency with experts’ ratings (intraclass correlation coefficient ≥0.83, classification accuracy >88%), and good agreement was also found between low-back compression force from the developed system and the reference system (mean intersystem coefficient of multiple correlation >0.89 and relative error <9.5%). These findings suggested that the wearable inertial sensors-based automated system could be effectively used for WMSD risk assessment of workers when performing tasks in the workspace.

Work-related musculoskeletal disorders among endoscopic transsphenoidal surgeons: a systematic review of prevalence and ergonomic interventions

Endoscopic transsphenoidal surgery is a surgical technique introduced in the last 20 years for the treatment of skull base pathologies and, in particular, pituitary tumours. Although the prevalence of work-related musculoskeletal disorders is usually significantly higher in endoscopists and minimally invasive surgeons compared to other surgical and medical specialties, reviews on the prevalence of disorders among neurosurgeons dedicated to endoscopic transsphenoidal surgery are not available. This article performs a systematic review to identify the work-related musculoskeletal disorders among transsphenoidal neurosurgeons, their prevalence and the ergonomic interventions proposed to reduce risk factors and prevent disorders. The results show that the ergonomics of transsphenoidal neurosurgeons is an under-investigated topic. Indeed, specific prevalence data are not available. In addition, only a few papers suggest interventions and guidelines, but without objective assessment of the outcomes to confirm the ergonomic benefit. Based on these gaps in the literature, a future research agenda is proposed.

Evaluation of scapular dyskinesis and ergonomic risk level in office workers

Purpose. The purpose of this study is to evaluate the association between ergonomic risk level and scapular dyskinesis in office workers. Methods. This cross-sectional study included office workers aged 20-65 years. A lateral scapular slide test (LSST) was used to evaluate scapular dyskinesis, and the quick exposure check (QEC) method was used to analyze the ergonomic risk level. Results. In all, 37 (45.7%) participants were men and 44 (54.3%) participants were women. Of the participants with scapular dyskinesis in any of the three LSST positions, 10.3% had low, 20.6% had medium, 30.9% had high and 37.9% had very high ergonomic risk level (p = 0.001). A low, positive linear correlation was observed between ergonomic risk level and LSST-1, LSST-2 and LSST-3 values. Conclusion. These results indicate that patients with scapular dyskinesis have a high ergonomic risk level. We believe that our work will serve as a foundation for intervention studies assessing ergonomic risk management.