CMC ATP Seating & Mobility Assessment 3

Question 1

A client with C5 tetraplegia wants to self-propel a manual wheelchair. Which rear wheel position change would MOST improve propulsion efficiency?

Accepted Answer

Move wheels forward and lower axle position

Answer

Moving the rear axle forward and lower places the wheel in optimal position relative to the shoulder, reducing the arc needed and improving propulsion efficiency.

Question 2

During the mat assessment, the ATP observes that the client's hamstrings are extremely tight. How should seat depth be adjusted to accommodate this?

Accepted Answer

Decrease seat depth to prevent posterior pelvic tilt caused by hamstring pull

Answer

Tight hamstrings pull the pelvis into posterior tilt when the knee is extended; reducing seat depth allows the knees to flex, relieving hamstring tension.

Question 3

What is the primary purpose of a tilt-in-space feature on a power wheelchair?

Accepted Answer

To redistribute pressure and reduce the risk of pressure injuries

Answer

Tilt-in-space redistributes pressure away from the ischial tuberosities to the back and thighs without changing the seat-to-back angle.

Question 4

A lateral trunk support is being positioned for a client with scoliosis. At what anatomical level should the concave-side support typically be placed?

Accepted Answer

At the apex of the curve to provide corrective force

Answer

Lateral supports are placed at the apex of the curve to provide the most effective corrective or accommodative force at the point of maximum deviation.

Question 5

Which of the following best describes the '90-90-90 rule' in seating?

Accepted Answer

Hips, knees, and ankles each at approximately 90 degrees of flexion

Answer

The 90-90-90 rule refers to positioning the hips, knees, and ankles at approximately 90 degrees to promote neutral joint alignment.

(CMC) Certified Mobility Consultant Practice Test

(CMC) Certified Mobility Consultant Practice Test

CMC ATP Seating & Mobility Assessment 3