CPE CPE Biomechanics & Musculoskeletal Disorders Questions and Answers 1

Question 1

Which tissue type has the lowest blood supply and therefore the slowest healing rate after ergonomic injury?

Accepted Answer

Tendon

Answer

Tendons are avascular tissues with poor blood supply, resulting in very slow healing rates compared to muscle or bone.

Question 2

The NIOSH Lifting Equation uses a Recommended Weight Limit (RWL). What is the load constant (LC) used in the equation?

Accepted Answer

23 kg

Answer

The NIOSH Lifting Equation uses a load constant of 23 kg (51 lbs), which is the maximum weight recommended under ideal conditions.

Question 3

Which biomechanical model calculates compressive forces on the L5/S1 disc by treating the spine as a simple lever?

Accepted Answer

Static biomechanical model

Answer

The static biomechanical model uses lever mechanics to estimate compressive and shear forces at the L5/S1 intervertebral disc.

Question 4

Carpal tunnel syndrome results from compression of which nerve?

Accepted Answer

Median nerve

Answer

Carpal tunnel syndrome is caused by compression of the median nerve as it passes through the carpal tunnel in the wrist.

Question 5

What is the NIOSH Action Limit (AL) for back compressive force at L5/S1?

Accepted Answer

3,400 N

Answer

NIOSH sets the action limit at 3,400 N of compressive force at L5/S1, above which musculoskeletal injury risk increases significantly.

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