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Analysis on the Work-related musculoskeletal disorders (WMSD’s) based on ergonomic study in case of industry study
Abstract
Musculoskeletal disorders (MSDs) can affect the
body's muscles, joints, tendons, ligaments and nerves. Most
work-related MSDs develop over time and are caused either
by the work itself or by the employees' working environment.
The paper presents a case study on the analysis of the Workrelated
musculoskeletal disorders (WMSD’s) occur when
there is a mismatch between the requirements of the job and
the physical capacity of the human body. Risk factors linked
with WMSD’s include repetitive motion, heavy lifting,
forceful exertion, awkward posture, and rapid hand and wrist
motion. In a review of loss-based data (1993), ergonomicrelated
injuries are the single greatest source of lost -time in
the workplace today. Currently, these injuries account for
between 33% and 40% of total worker compensation
spending. This statistics compiled by the Occupational Safety
and Health Administration (OSHA), the National Institute for
Occupational Safety and Health (NIOSH).
... The starting point of a bottling process begins at the de-palletizing workstation where the factory workers manually unload new cases of bottles from a pallet onto a conveyor [8]. The process of unloading new cases of bottles from a pallet onto a conveyor involves excessive overhead reaching at the beginning of a new pallet and forward bending toward the end of the unloading process [16]. Other bottling tasks, such as bottle screening, beverage bottling and crowning as well as palletizing operation have been categorized as high risk for developing WRMDs in at least one part of the body [8]. ...
... For instance, de-palletizing workstation is the starting point of a bottling process and it requires the workers to manually unload new cases of bottles from a pallet onto a conveyor [8]. The process of unloading new cases of bottles from a pallet onto a conveyor involves excessive overhead reaching at the beginning of a new pallet and forward bending toward the end of the unloading process [16,27]. Bottling tasks, such as bottle screening operation, beverage bottling and crowning as well as palletizing have been categorized as high risk for developing WRMDs in at least one part of the body [8]. ...
Background:
Bottling tasks postures may increase risk for developing work related musculoskeletal discomforts (WRMDs). Postural evaluation with epidemiological investigation for possible association may be appropriate for planning ergonomic programs.
Objective:
To evaluate working postures and investigate associations between postural risks and prevalence of WRMDs among beverage bottling workers.
Method:
301 beverage bottling company workers (8 work-stations) participated in this survey. They were required to complete a modified standard Nordic questionnaire, and their working postures examined utilizing Rapid Entire Body Assessment (REBA).
Results:
Postural risks ratings were high (8- 10) to very high (11- 15). Shoulder was the most commonly reported body part with WRMDs except at the carbonating workstations where Neck, Upper and Lower back discomforts were the most common (60.0% ). The compounding workstations recorded the highest prevalence of WRMDs in all body regions except shoulder and wrist. There was a significant association between working posture and occurrence of WRMDs in at least one body part. Similarly, working posture was significantly associated with WRMDs at Neck, Upper back and Wrist.
Conclusions:
Working postures may be exposing beverage bottling workers to significant risk of developing WRMDs in at least one body part, more specifically, Shoulder, Neck, Upper back and Wrist. Intervention aimed at reducing postural risks is necessary.
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