CFO Biomechanics & Gait Analysis

Question 1

During normal gait, the stance phase comprises approximately what percentage of the gait cycle?

Accepted Answer

60%

Answer

40%

Answer

50%

Answer

70%

Question 2

Which of the following best describes heel strike in normal gait?

Accepted Answer

The posterior lateral heel contacts the ground first

Answer

The foot contacts the ground flat

Answer

The lateral heel contacts the ground first

Answer

The toes contact the ground first

Question 3

What is the normal range of subtalar joint motion required for efficient gait?

Accepted Answer

6–10 degrees

Answer

2–4 degrees

Answer

12–16 degrees

Answer

20–25 degrees

Question 4

Which muscle is the primary decelerator of tibial advancement during the loading response of gait?

Accepted Answer

Tibialis anterior

Answer

Tibialis posterior

Answer

Gastrocnemius

Answer

Peroneus longus

Question 5

The windlass mechanism during push-off primarily involves which structure?

Accepted Answer

Plantar fascia

Answer

Achilles tendon

Answer

Spring ligament

Answer

Long plantar ligament

Question 6

What is the Q-angle, and which finding raises concern in orthotic assessment?

Accepted Answer

Angle between the quadriceps force vector and the patellar tendon; values above 20° in females are abnormal

Answer

Angle of the calcaneus; values above 5° are abnormal

Answer

Angle of tibial torsion; values below 10° are abnormal

Answer

Angle of subtalar inclination; values above 15° are abnormal

Question 7

During midstance, what is the primary function of the tibialis posterior muscle?

Accepted Answer

Inverting the subtalar joint and supporting the medial longitudinal arch

Answer

Dorsiflexing the ankle to allow smooth progression

Answer

Everting the subtalar joint to absorb shock

Answer

Plantar flexing the first ray to assist push-off