CPO CPO Biomechanics & Gait Analysis

Question 1

During normal walking gait, which phase accounts for approximately 60% of the gait cycle?

Accepted Answer

Stance phase

Answer

Stance phase comprises roughly 60% of the gait cycle while swing phase accounts for the remaining 40%.

Question 2

Which gait deviation is most commonly observed in a patient with a transtibial prosthesis that has excessive socket flexion?

Accepted Answer

Knee instability at midstance

Answer

Excessive socket flexion in a transtibial prosthesis shifts the ground reaction force posterior to the knee, causing instability at midstance.

Question 3

What is the term for the forward progression of the body over a stationary foot during midstance?

Accepted Answer

Tibial advancement

Answer

Tibial advancement describes the forward progression of the tibia over the stationary foot during the stance phase of gait.

Question 4

In amputee gait analysis, 'vaulting' on the sound limb is most often a compensatory mechanism for which prosthetic issue?

Accepted Answer

Prosthetic limb being too long

Answer

Vaulting (rising on the toe of the sound limb) is a compensatory strategy when the prosthetic limb is functionally too long, allowing foot clearance during swing.

Question 5

The center of pressure (COP) path during stance phase normally progresses in which direction?

Accepted Answer

Posterior heel to metatarsal heads, medially to hallux

Answer

Normal COP progression moves from the posterior lateral heel forward along the lateral border to the metatarsal heads and then medially to the hallux.

(CPO) Certified Prosthetist Orthotist Practice Test

(CPO) Certified Prosthetist Orthotist Practice Test

CPO CPO Biomechanics & Gait Analysis