Latin Questionnaire: a threshold strategy for anamnestic screening of occupational musculoskeletal disorders through specific reference groups.

Introduction: Health surveillance programs conducted for both individual workers and working populations as a whole are managed by occupational health physicians and focus on disorders and diseases caused by biomechanical overload, primarily for preventive purposes. Objectives: The purpose of the paper is to update an anamnestic protocol for studying musculoskeletal disorders after more than 40 years experience of its application. The updated version has been re-named the Latin Questionnaire. The protocol enables preliminary epidemiological evaluation, by comparing results of exposed populations to those from a reference population, thanks to the introduction of a severity threshold, a concept lacking in similar questionnaires. Methods: The Latin Questionnaire is based on symptoms of discomfort, pain, and paraesthesia. Each symptom is described in terms of location, duration, number of episodes, irradiation, and treatment. The model covers present symptoms during the previous 12 months and is designed to identify positive anamnestic cases (when positive according to the threshold), cases with minor disorders, and negative cases for conditions involving the spine and upper and lower limbs. Results: The updated anamnestic model was validated again through the collaborative effort involving 37 physicians from 14 Latin countries. To enable comparisons with exposed populations, an updated reference population (4,000 unexposed workers) is presented, evaluating the percentages of subjects positive according to thresholds for spine and upper and lower limbs and the incidence of acute lower back pain, broken down by gender and age groups. Examples of application of the questionnaire are also presented. Conclusions: The Latin Questionnaire, which has also been implemented in digital form (free download), allows selection of significant anamnestic cases compared to cases with minor disorders. This strategy is indispensable for correctly conducting preliminary epidemiological studies. Example applications confirm the presence of significant differences between the percentages of subjects with positive thresholds in exposed compared to reference groups, with surpluses proportional to their levels of biomechanical overload.

Application of MAPO (movement and assistance of hospitalized patients) method in hospitals and nursing homes: 20 years of experience and evolution - part 1.

This article illustrates the evolution of the MAPO method for quantifying the risk of musculoskeletal disorders associated with patient handling.The main factors that have influenced MAPO risk determinants include the rising number of disabled patients (D), growing understaffing, and the increased availability of equipment and training.Hospital wards and especially nursing homes have been provided with lifting equipment since 2008; however, 73.8% of the workforce in nursing homes is exposed to a high level of MAPO risk versus only 8.1% of hospital workers. This study presents organisational data in hospital wards (no.=528) and nursing homes (no.=214) involving 14,246 caregivers: the D/Op ratio in nursing homes is significantly higher compared to the corresponding ratio in hospital wards (p-value < 0.001). Moreover, the number of healthcare workers involved in manual patient handling activities over the night shift in nursing homes is much lower than the corresponding number in hospital wards. Practitioner summary: The purpose of this article is to illustrate organisational data from hospital wards and nursing homes, gathered over 20 years of implementing the MAPO method. The protocols for adapting the method to recent changes in care delivery are also presented.

MAPO Method to Assess the Risk of Patient Manual Handling in Hospital Wards: A Validation Study.

OBJECTIVE: To validate the effectiveness of MAPO method (Movement and Assistance of Hospital Patient) after the introduction of some changes to improve assessment objectivity. BACKGROUND: The number of operators exposed to patient manual handling is increasing considerably. MAPO, proposed in 1999 as a useful tool to estimate the risk of patient manual handling, is a method characterized by analytical quickness. It has recently been improved to better match the 2012 ISO (International Organization for Standardization) technical report. METHODS: A multicenter study was conducted between 2014 and 2016 involving 26 Italian hospitals in the Apulia Region. MAPO method was used to assess the risk of patient manual handling in 116 wards. A total of 1,998 exposed subjects were evaluated for the presence or absence of acute low back pain in the previous 12 months. RESULTS: Only 12% of the investigated wards fell in the green exposure level (MAPO index = 0.1-1.5), 37% resulted in the average exposure level (MAPO index = 1.51-5) and the remaining 51% in the higher exposure level (MAPO index >5). The results confirmed a positive association between increasing levels of MAPO index and the number of episodes of acute low back pain (adjusted p trend = .001). CONCLUSION: The improvements made over the past years led to a more objective assessment procedure. Despite the changes, the study confirmed the effectiveness of MAPO method to predict low back pain. APPLICATION: MAPO method is an accurate risk assessment tool that identifies and evaluates workplace risks. The proper application of the method significantly improves working conditions.

Prevalence of musculoskeletal disorders in subjects not exposed to biomechanical overload. / Prevalenza di disturbi e patologie muscoloscheletriche in lavoratori attivi non espposti a sovraccarico biomeccanico.

BACKGROUND: Data on the prevalence of work-related musculoskeletal disorders (WMSDs) in groups of unexposed subjects may serve for comparison in studies on risk/damage in groups of exposed subjects and for the planning of preventive interventions. OBJECTIVES: To assess the musculoskeletal health status in a group of working subjects not exposed to biomechanical overload. METHODS: Medical histories were collected by occupational health physicians as part of an active health surveillance program. An ad hoc questionnaire was administered to the subjects to detect musculoskeletal disorders. RESULTS: The sample consisted of 1023 subjects (605 females and 418 males) with a mean age of 40 years. The prevalence of acute low back pain and disc hernia was 4% and 5.6% respectively; 4.3% of subjects were affected by at least one disorder of the upper limbs while the prevalence of knee disorders was 1.7%. Standardized data proved to be in line with previous studies with the exception of a greater prevalence of shoulder disorders and disc hernia. CONCLUSIONS: WMSDs occur ubiquitously across the general working population unexposed to biomechanical overload. Such findings represent a valid reference for groups of exposed working subjects, in that any excess of such disorders/pathology may be due to specific work conditions.

Cumulative Mass and NIOSH Variable Lifting Index Method for Risk Assessment: Possible Relations.

Objective The aim of this study was to explore whether the Variable Lifting Index (VLI) can be corrected for cumulative mass and thus test its efficacy in predicting the risk of low-back pain (LBP). Background A validation study of the VLI method was published in this journal reporting promising results. Although several studies highlighted a positive correlation between cumulative load and LBP, cumulative mass has never been considered in any of the studies investigating the relationship between manual material handling and LBP. Method Both VLI and cumulative mass were calculated for 2,374 exposed subjects using a systematic approach. Due to high variability of cumulative mass values, a stratification within VLI categories was employed. Dummy variables (1-4) were assigned to each class and used as a multiplier factor for the VLI, resulting in a new index (VLI_CMM). Data on LBP were collected by occupational physicians at the study sites. Logistic regression was used to estimate the risk of acute LBP within levels of risk exposure when compared with a control group formed by 1,028 unexposed subjects. Results Data showed greatly variable values of cumulative mass across all VLI classes. The potential effect of cumulative mass on damage emerged as not significant ( p value = .6526). Conclusion When comparing VLI_CMM with raw VLI, the former failed to prove itself as a better predictor of LBP risk. Application To recognize cumulative mass as a modifier, especially for lumbar degenerative spine diseases, authors of future studies should investigate potential association between the VLI and other damage variables.

The prevalence of musculoskeletal disorders in the retail sector: an Italian cross sectional study on 3380 workers.

BACKGROUND: Cashiers are not the only workers in the Retail Sector (RS) who are exposed to biomechanical overload risk of the upper limbs and spine. OBJECTIVES: To investigate the prevalence of musculoskeletal disorders among employees in the RS. METHODS: 3380 Italian workers were asked to complete a standardized medical history questionnaire to collect data on symptoms and diagnosed disorders affecting upper limbs, spine and knees. These were then compared with data on subjects not exposed to biomechanical overload risk. RESULTS: 21.1% of the workers reported at least one disorder affecting the upper limbs (OR 5.05), i.e., shoulder (OR 3.39), elbow (OR 4.25), wrist/hand (OR 8.39) and CTS (OR 8.70). The prevalence of disc hernia was 16% (OR 3.82). A high prevalence of knee complaints was also found among subjects employed in the RS (OR 1.73). CONCLUSIONS: The high prevalence of musculoskeletal disorders seems to confirm the presence of a risk of biomechanical overload for most job positions in the retail sector, although a possible selection bias cannot be completely ignored. Recommendations for future studies aiming to confirm our results include: involving all workers in every store and collecting information about diagnostic procedures.

Variable Lifting Index for Manual-Lifting Risk Assessment: A Preliminary Validation Study.

OBJECTIVE: The aim of this study was to evaluate the efficacy of the new Variable Lifting Index (VLI) method, theoretically based on the Revised National Institute for Occupational Safety and Health [NIOSH] Lifting Equation (RNLE), in predicting the risk of acute low-back pain (LBP) in the past 12 months. BACKGROUND: A new risk variable termed the VLI for assessing variable manual lifting has been developed, but there has been no epidemiological study that evaluates the relationship between the VLI and LBP. METHOD: A sample of 3,402 study participants from 16 companies in different industrial sectors was analyzed. Of the participants, 2,374 were in the risk exposure group involving manual materials handling (MMH), and 1,028 were in the control group without MMH. The VLI was calculated for each participant in the exposure group using a systematic approach. LBP information was collected by occupational physicians at the study sites. The risk of acute LBP was estimated by calculating the odds ratio (OR) between levels of the risk exposure and the control group using a logistic regression analysis. Both crude and adjusted ORs for body mass index, gender, and age were analyzed. RESULTS: Both crude and adjusted ORs showed a dose-response relationship. As the levels of VLI increased, the risk of LBP increased. This risk relationship existed when VLI was greater than 1. CONCLUSION: The VLI method can be used to assess the risk of acute LBP, although further studies are needed to confirm the outcome and to define better VLI categories.

[Epidemiology of illnesses and musculoskeletal disorders in grocery stores and catering]. / Epidemiologia delle malattie e dei disturbi muscoloscheletrici nella grande distribuzione e nella ristorazione collettiva.

Large scale retail industry and catering industry are characterized by the widespread presence of several risk factors of work-related musculoskeletal disorders (WMSD): repetitive movements, incongruous postures and manual handling tasks. We reviewed current epidemiological evidence related to musculoskeletal disorders within these two sectors, distinguishing between symptoms and clinically documented disorders. In retail industry cashier is the most investigated figure, regarding upper limbs disorders as a consequence of repetitive tasks. In the catering sector there are few studies, mostly focused only on the job as a cook. The majority of studies showed a high prevalence of WMSD and, to a lesser extent, a high frequency ofmusculoskeletal alterations; suggesting the presence of a not negligible risk. These findings, however, are affected by a number of methodological limitations: they derive from cross-sectional studies, are based on voluntary self-selected workers, are focused on not unequivocally defined health outcomes, and are usually lacking a proper comparison. with the prevalence in less exposed/reference working groups. In order to achieve an effective control of the workers' risk, it is therefore necessary to design and conduct prospective studies that compare the risk of developing disorders and/or diseases in workers exposed to different levels of biomechanical load. It appears essential to involve occupational physicians in active health surveillance programs in order to identify critical areas and to develop effective preventive measures.

[Ergonomics and productivity: an example applied to a manufacturing industry]. / Ergonomia e produttività: un esempio applicato ad una industria manifatturiera.

BACKGROUND: The survival of manufacturing in the western world also depends on the ability to increase productivity. To achieve this goal, it is necessary to recover the efficiency of all workers suffering from upper limb biomechanical overload disease. Ergonomic methods can be a valuable tool in solving this apparent conflict: operatives'productivity and health. METHODS: After carrying out an ergonomic education and training programme for all company employees and risk assessment for upper limb biomechanical overload through the OCRA checklist method, a programme of improvements on a production line was planned and tested, mainly based on international and European standards. RESULTS: Within approximately 2 years, thanks to changes in workplace layout and organization, a significant reduction of 22.7% in risk level was achieved and, at the same time, a 16% increase in productivity. DISCUSSION: An ergonomic approach based on global, interdisciplinary and participatory principles in the case considered showed that it is possible to match increased productivity with decreased risk. In this specific case application of ergonomic principles during product design was rather poor, which is typical of companies working for third party customers.

Screening of risk from patient manual handling with MAPO method.

International standards highlight the steps required by risk assessment and involving first hazard identification, then risk evaluation and finally, if necessary, risk assessment. To check approach appropriateness to "risk evaluation" from manual patient handling through MAPO, a cross study was carried out in view of checking relationship between this new risk assessment model and occurrence of acute low back pain. After proper training the MAPO screening method was assessed in 31 wards, 411 exposed subjects of geriatric hospitals. At the same time health data were collected on occurrence of low back pain episodes during the last year both in the exposed subjects' group and the external reference group (n�237). Risk and clinical assessment data were tutored and checked by EPM research unit. The logistic analysis was used as a method to evaluate the relationship between risk index and acute low back pain. Investigating relationship between acute low back pain episodes and levels of MAPO screening index, carried out only with the people exposed who claimed to work for at least 30 hours per week (n = 178), showed definitely positive trends. The study results indicate that MAPO screening may represent a useful tool to estimate the risk from manual handling patients.