P-569 Effectiveness of Administrative Interventions in Reducing Musculoskeletal Disorders Among Crane & Heavy Equipment Operators

Abstract Introduction Musculoskeletal disorders (MSDs) account for maximum work-related ailments among crane/heavy equipment operators. Exposure to whole body vibration while operating the cranes/heavy equipment is the primary risk factor for developing musculoskeletal discomfort. We report the study conducted among crane/ heavy equipment operators in Salem District, India, done with the objective of implementing administrative interventions to minimize their exposure to vibration. Methods A randomized comparative study was conducted on 68 (N) male crane/heavy equipment operators in a steel industry. Prevalence of MSDs was determined using the standardized Nordic Musculoskeletal Questionnaire (NMQ). Administrative controls such as reduced working hours for the 68, of which n=38 (study group) were additionally transferred to operating non-vibrating equipment for 6 months. Evaluation of body discomfort before and after the intervention was done using Corlett & Bishop’s body-part discomfort scale. Results Initially results of NMQ showed the prevalence of MSDs among 68 operators mainly in the spine and shoulder regions (100%). After specific reduction of exposure to vibration, 81.58% from the study group (31/38) reported decrement of discomfort in neck, shoulder, arms, and lower back. In the comparative group of 30, the decrement was reported by 54% (17/30). Discussion Administrative controls though interim, can be implemented immediately compared to elimination, substitution, or engineering controls which may take time. Conclusions It can be concluded that a combination of reduction in time exposure and withdrawal from source of exposure to vibration, reduced discomfort in different body parts significantly. The conclusion is that administrative interventions, as an interim measure, can decrease MSDs of at-risk body regions.