CPT Anatomy, Biomechanics, & Gait Analysis 2

Question 1

Which muscle group is primarily responsible for eccentric control of the knee during the loading response phase of gait?

Accepted Answer

Quadriceps

Answer

The quadriceps contract eccentrically during loading response to control knee flexion and absorb shock.

Question 2

In a transtibial amputee, which gait deviation is most commonly caused by excessive socket flexion?

Accepted Answer

Anterior trunk lean

Answer

Excessive socket flexion shifts the patient's center of mass forward, causing an anterior trunk lean during stance.

Question 3

The tensor fasciae latae muscle primarily functions as which of the following during gait?

Accepted Answer

Hip flexor, abductor, and internal rotator

Answer

The tensor fasciae latae performs hip flexion, abduction, and internal rotation, contributing to swing phase initiation.

Question 4

During normal gait, at what percentage of the gait cycle does toe-off typically occur?

Accepted Answer

62%

Answer

Toe-off occurs at approximately 62% of the gait cycle, marking the end of stance and beginning of swing phase.

Question 5

Which anatomical structure forms the primary medial stabilizer of the ankle joint?

Accepted Answer

Deltoid ligament

Answer

The deltoid (medial collateral) ligament is a strong, triangular structure providing primary medial ankle stability.

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