COF Human Anatomy & Physiology 2

Question 1

Which tarsal bone articulates with the tibia and fibula to form the ankle mortise joint?

Accepted Answer

Talus

Answer

The talus sits within the ankle mortise, articulating with the distal tibia and fibula to form the talocrural joint.

Question 2

What is the primary function of the plantar fascia?

Accepted Answer

Support of the medial longitudinal arch

Answer

The plantar fascia acts as a static support structure for the medial longitudinal arch, functioning as a windlass mechanism during gait.

Question 3

Which nerve is responsible for sensation on the dorsum of the foot and is commonly tested when evaluating L4-L5 dermatomal integrity?

Accepted Answer

Deep peroneal nerve

Answer

The deep peroneal nerve supplies sensation to the first web space on the dorsum of the foot and reflects L4-L5 nerve root function.

Question 4

The Q-angle is measured as the angle between the quadriceps line of pull and the patellar tendon. An abnormally increased Q-angle is associated with which structural alignment issue?

Accepted Answer

Genu valgum

Answer

Genu valgum (knock-knee) increases the Q-angle by shifting the tibial tubercle laterally relative to the anterior superior iliac spine.

Question 5

Which muscle group is the primary active stabilizer of the subtalar joint during the loading response phase of gait?

Accepted Answer

Tibialis posterior

Answer

The tibialis posterior eccentrically controls subtalar pronation during loading response, serving as the primary dynamic support of the medial arch.

(COF) Certified Orthotic Fitter Practice Test

(COF) Certified Orthotic Fitter Practice Test

COF Human Anatomy & Physiology 2