SSH Ergonomics & Musculoskeletal Disorder Prevention

Question 1

Which of the following is the MOST common work-related musculoskeletal disorder (WMSD) reported in U.S. workplaces?

Accepted Answer

Low back pain

Answer

Carpal tunnel syndrome

Answer

Rotator cuff tendinitis

Answer

Lateral epicondylitis

Question 2

According to NIOSH, which of the following is NOT one of the primary ergonomic risk factors for musculoskeletal disorders?

Accepted Answer

High ambient temperature

Answer

Repetitive motion

Answer

Awkward posture

Answer

Contact stress

Question 3

The Revised NIOSH Lifting Equation recommends a Recommended Weight Limit (RWL) for a two-handed manual lift. What is the load constant (LC) used as the starting point in this equation?

Accepted Answer

23 kg (51 lbs)

Answer

16 kg (35 lbs)

Answer

30 kg (66 lbs)

Answer

20 kg (44 lbs)

Question 4

A Lifting Index (LI) value greater than what threshold indicates a significant risk of musculoskeletal injury according to the NIOSH Lifting Equation?

Accepted Answer

LI > 1.0

Answer

LI > 2.0

Answer

LI > 3.0

Answer

LI > 0.5

Question 5

Which type of ergonomic intervention involves modifying the workstation, tools, or equipment to reduce MSD risk?

Accepted Answer

Engineering control

Answer

Administrative control

Answer

Personal protective equipment

Answer

Behavioral modification

Question 6

Carpal tunnel syndrome is caused by compression of which nerve at the wrist?

Accepted Answer

Median nerve

Answer

Ulnar nerve

Answer

Radial nerve

Answer

Axillary nerve

Question 7

Which ergonomic assessment tool uses observable risk factor categories—such as neck, shoulder, and wrist posture—and assigns action levels to prioritize interventions?

Accepted Answer

REBA (Rapid Entire Body Assessment)

Answer

WISHA Caution Zone Checklist

Answer

Snook Tables

Answer

ACGIH TLV for Hand-Arm Vibration