3dsspp software

Manual material handling tasks can cause fatigue in the short term and, in the long run, increase physical workload and musculoskeletal injuries in individuals. The  The present study was conducted with the aim of ergonomic evaluation of the manual material handling tasks.
 

This descriptive-analytical and cross-sectional study was carried out on 100 workers in the food industries of Malard County in 2017. The Nordic questionnaire was used to determine the frequency of musculoskeletal disorders, and the 3DSSPP software, as well as the KIM key indicator method, were used for the ergonomic assessment of the manual material handling tasks. Data analysis was performed using SPSS software (version 23).
 

The most frequent musculoskeletal discomfort was in the foot and the ankle (26%). The key indicator method showed that the final risk score in 61% of the tasks ranged from 10 to 24, and in 39% between 25 and 49. Also, the results of 3DSSPP software showed that the compressive and shear forces on the L5 / S1 disc were higher than the permissible limit in 30 and 8 percent of the workers' posture, respectively.
 

Most of the risk factors for manual material handling tasks in this study were thoroughly and accurately evaluated using both the KIM key indicator method and 3DSSPP software. Therefore, with this evaluation, the ergonomic conditions for manual material handling can be improved more precisely.

Manual load lifting is the most common and most stressful activity in manual handling of loads that imposes the highest possible amount of biomechanical pressure on the body, particularly on the spine. The present study was conducted to determine the prevalence of musculoskeletal disorders and to estimate the mechanical force exerted on the lower back in workers responsible for manual load lifting. The present cross-sectional study was conducted on 120 workers responsible for manual load lifting activities in 7 industrial settings in the city of Shiraz. The Nordic Musculoskeletal Questionnaire (NMQ) was used for determining the prevalence of musculoskeletal disorders and the 3DSSPP software was used to estimate the forces exerted on the lower back during load lifting. Data were then analyzed in SPSS-19. The results showed that lower back problems constitute the most prevalent musculoskeletal disorder (68.3%). Evaluations conducted in 3DSSPP showed that in 17.5% of the cases, compressive forces, and in 10.8% of the cases, shearing forces exerted on the L5-S1 disc were higher in the workers than the permissible levels. There were no significant differences between the rate of the prevalence of lower back pain at different levels of compressive and shearing forces exerted on the disc (p>0/05). This finding might indicate the limitations of the method used in this study for conducting a comprehensive assessment of loads exerted on the spine. The prevalence of musculoskeletal disorders, in particular lower back pain, was estimated to be high among the subjects studied. The risk levels of compressive and shearing forces exceeded the permissible amount in a low percentage of the workers studied. The 3DSSPP software might have certain limitations in the assessment of the pressure exerted on the spine.