CEAS Workplace Assessment & Evaluation Flashcards

In ergonomic assessment terminology, what does 'neutral posture' mean?

Answer: Joints are positioned near the mid-range of their motion with minimal muscle strain

Neutral posture places joints close to their mid-range of motion, minimizing muscle and tendon strain and reducing cumulative injury risk.

What is the recommended elbow angle range when typing at a properly adjusted computer workstation?

Answer: 90°–110°

An elbow angle of 90°–110° at the keyboard promotes a relaxed shoulder posture and reduces forearm and wrist strain.

What does 'contact stress' refer to in an ergonomic workplace assessment?

Answer: Pressure on soft tissue from hard edges of work surfaces or tools

Contact stress occurs when hard or sharp edges of surfaces or tools press into soft tissue (e.g., wrists resting on a desk edge), compressing nerves and blood vessels.

In ergonomic assessments, what does the abbreviation CTD stand for?

Answer: Cumulative Trauma Disorder

CTD (Cumulative Trauma Disorder) refers to musculoskeletal injuries that develop gradually from repeated exposure to ergonomic risk factors over time.

Which body region is assessed most frequently during computer workstation ergonomic evaluations?

Answer: Neck and upper extremities

Computer work primarily stresses the neck, shoulders, arms, wrists, and hands, making upper-extremity and neck assessment the focus of most workstation evaluations.

What is the Lifting Index (LI) in the NIOSH Lifting Equation used to indicate?

Answer: The relative risk of a lifting task compared to the recommended weight limit

The Lifting Index is the ratio of the actual load weight to the RWL; an LI greater than 1.0 indicates increased risk of musculoskeletal injury.