OT Kinesiology 4

Question 1

A client with C6 spinal cord injury retains wrist extension but lacks active grasp. Which tenodesis principle allows functional pick-up?

Accepted Answer

Wrist flexion passively opens the hand; wrist extension passively closes the fingers

Answer

In tenodesis grasp, active wrist extension causes passive finger flexion due to finger flexor tightness, while wrist flexion allows the fingers to open passively.

Question 2

Which of the following best describes the 'force couple' that produces scapular upward rotation during shoulder elevation?

Accepted Answer

Upper trapezius pulling superiorly and serratus anterior pulling the inferior angle anteriorly

Answer

Scapular upward rotation is produced by a force couple: upper trapezius elevates the AC joint while serratus anterior pulls the inferior angle forward and upward.

Question 3

During normal standing, the line of gravity relative to the knee joint falls:

Accepted Answer

Anterior to the knee, keeping it extended passively

Answer

The body's line of gravity passes anterior to the knee joint axis during relaxed standing, creating an extension moment that keeps the knee locked without significant muscle effort.

Question 4

An OT client presents with 'claw hand' deformity affecting the ring and little fingers. Which nerve injury is most likely?

Accepted Answer

Ulnar nerve at the wrist

Answer

Ulnar nerve injury at the wrist causes clawing of the ring and little fingers due to loss of intrinsic muscle function, with hyperextension at MCP and flexion at IP joints.

Question 5

The center of gravity (COG) in a typical adult in anatomical position is located approximately at which vertebral level?

Accepted Answer

S2

Answer

The COG in an average adult is located anterior to the S2 vertebral level, roughly 55–57% of total body height from the ground.

OT - Master of Occupational Therapy Practice Test

OT - Master of Occupational Therapy Practice Test

OT Kinesiology 4