Gait Analysis & Lower Extremity Biomechanics Flashcards

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

Answer: 100–120 steps/min

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

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

Answer: 60%

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

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

Answer: Controlled plantar flexion

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

How is 'step length' defined in gait analysis?

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

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

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

Answer: Double support (loading response)

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

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

Answer: 1.0–1.5 m/s

Healthy adults typically walk at a self-selected speed of approximately 1.0–1.5 m/s (roughly 3–4 km/h).

How is 'stride length' defined in gait analysis?

Answer: Distance from initial contact of one foot to the next initial contact of the same foot

Stride length is the distance from initial contact of one foot to the next initial contact of the same foot, encompassing one complete gait cycle.