CMC Wheelchair Seating & Positioning 3

Question 1

Which anatomical landmark is used as the primary reference point when measuring posterior pelvic tilt in a seated client?

Accepted Answer

Posterior superior iliac spine (PSIS)

Answer

The PSIS is palpated and compared to the ASIS to determine the degree of pelvic tilt in the sagittal plane.

Question 2

A client with ALS is progressing toward full dependence. Which seating system feature should the ATP prioritize for long-term positioning as the disease advances?

Accepted Answer

Power tilt-in-space with recline and ventilator compatibility

Answer

As ALS progresses, tilt-in-space relieves pressure, recline manages tone, and ventilator compatibility addresses respiratory needs.

Question 3

What is the recommended hip flexion angle for most clients in a standard neutral seated position?

Accepted Answer

90 degrees

Answer

A 90-degree hip flexion angle is the neutral starting position for seating, though individual needs may require modification.

Question 4

Which condition MOST commonly requires an anterior trunk support (chest harness) in wheelchair seating?

Accepted Answer

Severe hypotonia with inability to maintain upright trunk

Answer

Severe hypotonia causes trunk collapse; an anterior support prevents forward falling while allowing functional use of the upper extremities.

Question 5

When prescribing a headrest for a power wheelchair user, which adjustment is made FIRST?

Accepted Answer

Posterior occipital support height aligned to maintain neutral cervical spine

Answer

The primary occipital support is positioned first to maintain a neutral cervical alignment before adding lateral or anterior components.

(CMC) Certified Mobility Consultant Practice Test

(CMC) Certified Mobility Consultant Practice Test

CMC Wheelchair Seating & Positioning 3