Below-Knee Prosthetic Gait Deviations Quiz

What is considered excessive knee flexion during normal walking speeds?

• 20 to 25 degrees

• 10 to 15 degrees

• 15 to 20 degrees

• More than 40 degrees

Answer explanation

Excessive knee flexion during normal walking speeds is defined as more than 40 degrees. This level of flexion can indicate abnormal gait mechanics or potential issues with mobility.

Which gait deviation is described as feeling like walking up a hill?

• Asymmetrical pelvic tilt

• Lateral thrust of the knee

• Insufficient knee flexion

• Excessive knee flexion

Answer explanation

Insufficient knee flexion can create a sensation similar to walking uphill, as it limits the normal range of motion and alters the gait pattern, making it feel more laborious.

During which phase should lateral thrust of the knee be observed?

• Mid stance

• Swing phase

• Initial stance

• Toe-off

Answer explanation

Lateral thrust of the knee is primarily observed during the mid stance phase, as this is when the body weight is transferred over the supporting leg, leading to potential lateral forces acting on the knee.

What is the normal pelvic tilt degree to the unsupported side during weight bearing?

• 10 degrees

• 7 degrees

• 5 degrees

• 3 degrees

Answer explanation

The normal pelvic tilt degree to the unsupported side during weight bearing is typically 5 degrees. This slight tilt helps maintain balance and stability while standing.

What is a common cause of uneven timing in a below-knee amputee's gait?

• Alignment stability

• Good balance

• Improperly fitting socket

• Properly fitting socket

Answer explanation

An improperly fitting socket can cause discomfort and instability, leading to uneven timing in a below-knee amputee's gait. Proper alignment and fit are crucial for smooth and balanced movement.

What does the arm on the prosthetic side typically do during the gait cycle?

• Is raised high

• Is held close to the body

• Swings freely

• Is not used

Answer explanation

During the gait cycle, the arm on the prosthetic side is typically held close to the body to maintain balance and stability, rather than swinging freely or being raised high.

What is the primary observation method for assessing excessive knee flexion?

• View from the front

• View from the back

• View from the side

• View from above

Answer explanation

The primary observation method for assessing excessive knee flexion is from the side. This view allows for a clear assessment of the knee angle and flexion during movement, which is crucial for accurate evaluation.

What might cause asymmetrical pelvic tilt in a below-knee amputee?

• Both A and B

• Too long a prosthesis

• None of the above

• Too short a prosthesis

Answer explanation

Asymmetrical pelvic tilt in a below-knee amputee can be caused by both a prosthesis that is too long and one that is too short. Both conditions can lead to improper alignment and weight distribution, resulting in tilt.

What is the standard walking base in normal locomotion?

• 15 to 20 cm

• 10 to 15 cm

• 2 to 5 cm

• 5 to 10 cm

Answer explanation

The standard walking base in normal locomotion is typically 5 to 10 cm. This range reflects the distance between the feet during walking, which is essential for balance and stability.

What is a potential psychological factor affecting uneven arm swinging?

• Flexibility

• Fear and insecurity

• Confidence

• Physical strength

Answer explanation

Fear and insecurity can lead to a lack of confidence in one's movements, causing uneven arm swinging. This psychological factor can affect how a person carries themselves, impacting their overall gait.