OT Kinesiology 2

Question 1

Which muscle is the primary hip flexor and is commonly assessed in OT when a client has difficulty rising from a chair?

Accepted Answer

Iliopsoas

Answer

The iliopsoas is the primary hip flexor and is critical for the sit-to-stand transfer assessed in OT practice.

Question 2

During forearm supination, which two muscles are primarily responsible for the motion?

Accepted Answer

Supinator and biceps brachii

Answer

The supinator and biceps brachii are the primary supinators of the forearm, with the biceps being more active against resistance.

Question 3

A client demonstrates a Trendelenburg gait pattern. Which muscle group is most likely weak?

Accepted Answer

Hip abductors on the stance limb

Answer

Weakness of hip abductors (primarily gluteus medius) on the stance limb causes the pelvis to drop on the contralateral side during single-leg stance.

Question 4

What type of muscle contraction occurs in the biceps brachii when slowly lowering a heavy book from a shelf?

Accepted Answer

Eccentric

Answer

Eccentric contraction occurs when the biceps lengthens under tension to control the descent of the weight against gravity.

Question 5

The 'close-packed' position of the glenohumeral joint, which provides maximum bony stability, is:

Accepted Answer

Full abduction with external rotation

Answer

The glenohumeral joint is in close-packed position at full abduction combined with external rotation, maximizing congruence of joint surfaces.

OT - Master of Occupational Therapy Practice Test