Avoid On the Job Injuries From Musculoskeletal Disorders

Musculoskeletal Disorders (MSD) is a term used to describe injuries to the muscles, tendons, ligaments, peripheral nerves, structures, bones or associated vascular system of the body. These injuries may occur to any part of the body (hands, arms back, etc.). Several risk factors have been associated with the development of MSD’s. The presence of risk factors in work activities are common and do not necessarily indicate a concern, but the question is how much and for how long.

Akward Postures: The position of the body during work, e.g., bending, reaching, twisting, standing. The body is strongest when the joints are in their neutral posture. Deviations from this posture will greatly affect the body’s available strength.

Forceful Motions: The force acting on the body during work, e.g., pushing, pulling, lifting, torque reaction, weight. The external force can translate to a much larger internal force in the body (e.g. a 40 lb. load in the hands can produce a load of over 800 lbs on the spine).

Repetitive Motion: The number of times a joint is moved and overall duration of a task, e.g., number of pinch grips per minute, number of lifts.

Contact Stress: The physical contact between the body and the work surface. Contact stress can result in restrictions of blood circulation and increases in tendon friction.

Environment: This includes lighting, glare, noise levels, temperature, vibration and humidity. The environmental effects can dramatically increase the physical effort required to do a job.

Personal Risk Factors: People are different and respond differently to the presence of ergonomic risks.

Controlling Personal Risk Factors: Balance stress on joints by exercising opposing muscles off the job. Stretch muscles before using them to prevent injuries. Don’t ignore pain. Choose safe exercises. Always check with health care provider before starting new exercise programs.

To reduce the potential for on-the-job-injuries for your employees, it is important that the principals defined are considered throughout their daily activities.

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