CO Gait Analysis & Lower Extremity Biomechanics

Question 1

What is the approximate normal cadence for a healthy adult during comfortable walking?

Accepted Answer

100–120 steps/min

Answer

Normal adult cadence is approximately 100–120 steps per minute at a comfortable self-selected walking speed.

Question 2

Approximately what percentage of the gait cycle is occupied by the stance phase in normal walking?

Accepted Answer

60%

Answer

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

Question 3

During the loading response phase of gait, the ankle undergoes which primary motion to assist shock absorption?

Accepted Answer

Controlled plantar flexion

Answer

At loading response, the ankle plantar flexes in a controlled manner (lowering the foot to the floor) to absorb impact forces.

Question 4

How is 'step length' defined in gait analysis?

Accepted Answer

Distance from initial contact of one foot to initial contact of the opposite foot

Answer

Step length is measured from the initial contact of one foot to the initial contact of the contralateral foot, representing a single step.

Question 5

During which phase of the gait cycle does the body's center of mass reach its lowest vertical position?

Accepted Answer

Double support (loading response)

Answer

The center of mass is at its lowest point during the double support phases when both feet are in contact with the ground.

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