Domain 3 Flashcards
MusculoskeletalDisorders (MSDs)
Affect the muscles, nerves, blood vessels, ligaments, and tendons. Largest category of workplace injuries
Cumulative Trauma Disorders
Work-related injuries associated with risk factors such as repetitive motion, contact stress, and awkward or sustained positions
Epicondylitis
Inflammation of an epicondyle (projection of bone above a condole, bone to bone, where tendons and ligaments are attached). Examples are tennis elbow or golfer’s elbow
Symptoms Survey
Surveys employees about pain or discomfort related to a specific job or task. Used to help focus attention on jobs or tasks that may lead to MSDs and to act before injuries occur
Ergonomics Survey
A process used to evaluate the risk of MSDs due to a mismatch between workplace design and employee capabilities
Anthropometry
The study of measurements and proportions of the human body
Ergonomics
The study of people’s efficiency in their work environment
Kinesiology
The study of movement
De Quervain’s Disease
Painful condition affecting the tendons on the thumb side of the wrist
Carpal Tunnel Syndrome
Caused by pressure on the medial nerve. Can result in tingling or numbness in fingers, weakened grip, etc.
Raynaud’s Syndrome
Condition that causes the blood vessels in the extremities to narrow, restricting blood flow. Also known as white finger disease
NIOSH Lifting Equation
RWL = LC X HM X VM X DM X AM X FM X CM
LC - Load constant
HM - Horizontal distance of hands from midpoint between ankles
VM - vertical distance of hand from the floor
DM - Vertical travel distance of between origin and destination
AM - angular displacement of the load from the Sagittarius plane in degrees
FM - average frequency of lifts per minute
CM - coupling or handle adequacy
Flexion
A body movement that decreases the angle between two body parts
Extension
Movement that increases the angle between two body parts
Abduction
Movement away from the body. Think hip abductor machine in the gym
Adduction
Movement towards the body. Think squeezing legs together
Composite Lifting Index
Determines the additive effect of several tasks and is obtained by ranking the tasks in decreasing order of physical difficulty as indicated by the single task lifting index of each task. Better estimates the risk associated with multi-tasks manual lifting
Frequency Independent Recommended Weight Limit (FIRWL)
Compressive force and manual strength required for a single rep of a task
Single Task Recommended Weight Limit (STRWL)
Overall demand of one task associated within the job
Lifting Index
Estimate of the level of physical stress associated with a lifting task
LI > 1 = hazardous and controls should be implemented
Acclimatization
The process of result of becoming accustomed to a new climate or conditions