OCC Anatomy & Physiology Relevant to Casting 4

Question 1

The posterior tibial pulse is assessed posterior to which bony landmark to evaluate distal circulation after lower leg casting?

Accepted Answer

Medial malleolus

Answer

The posterior tibial artery passes behind the medial malleolus and is palpated there to assess distal circulation of the foot.

Question 2

Which component of the neurovascular bundle runs through the carpal tunnel along with the flexor tendons?

Accepted Answer

Median nerve

Answer

The median nerve passes through the carpal tunnel beneath the flexor retinaculum along with the flexor digitorum superficialis, profundus, and flexor pollicis longus tendons.

Question 3

Wolff's Law states that bone remodels in response to which stimulus?

Accepted Answer

Mechanical stress applied to it

Answer

Wolff's Law describes bone's adaptation to the mechanical loads placed on it, laying down more matrix along lines of stress.

Question 4

The 'anatomical snuffbox' is bordered by the tendons of the abductor pollicis longus and extensor pollicis brevis radially and the extensor pollicis longus ulnarly; palpation tenderness here suggests fracture of which bone?

Accepted Answer

Scaphoid

Answer

Tenderness in the anatomical snuffbox is the classic clinical sign of a scaphoid fracture even when initial X-rays appear normal.

Question 5

Which muscle is the primary dorsiflexor of the ankle and can be weakened if the common peroneal nerve is compressed by a poorly applied cast?

Accepted Answer

Tibialis anterior

Answer

The tibialis anterior is the main dorsiflexor of the ankle and is innervated by the deep peroneal nerve, a branch of the common peroneal nerve.

(OCC) Orthopedic Casting Certification Practice Test

(OCC) Orthopedic Casting Certification Practice Test

OCC Anatomy & Physiology Relevant to Casting 4