OCC Anatomy & Physiology Relevant to Casting 2

Question 1

Which compartment of the lower leg contains the anterior tibial artery and deep peroneal nerve?

Accepted Answer

Anterior compartment

Answer

The anterior compartment of the lower leg contains the anterior tibial artery, deep peroneal nerve, and the dorsiflexor muscles.

Question 2

The epiphyseal plate (growth plate) in a pediatric patient is composed primarily of which tissue?

Accepted Answer

Hyaline cartilage

Answer

The epiphyseal plate consists of hyaline cartilage where longitudinal bone growth occurs in children.

Question 3

Which blood vessel is most at risk of compression when applying a cast at the antecubital fossa?

Accepted Answer

Brachial artery

Answer

The brachial artery runs through the antecubital fossa and is vulnerable to compression from tight cast edges or padding in that area.

Question 4

The peroneal (fibular) nerve wraps around which bony prominence, making it especially vulnerable during lower extremity casting?

Accepted Answer

Fibular head

Answer

The common peroneal nerve wraps around the fibular head, where pressure from cast edges can cause foot drop.

Question 5

During fracture healing, which phase involves the formation of a soft callus by chondrocytes?

Accepted Answer

Soft callus phase

Answer

The soft callus phase occurs when chondrocytes produce fibrocartilage that bridges the fracture gap before mineralization.

(OCC) Orthopedic Casting Certification Practice Test