CMC Mobility Solutions & Product Knowledge 2 — Questions and Answers
Question 1: A client with unilateral transfemoral amputation asks about a power wheelchair vs. a prosthesis for community mobility. Which factor most strongly favors recommending a prosthesis?
- Client has good upper extremity strength for propulsion
- Client demonstrates strong residual limb musculature and cardiovascular capacity (Correct answer)
- Client lives in a single-story home with no steps
- Client reports fatigue with extended walking
Correct answer: Client demonstrates strong residual limb musculature and cardiovascular capacity
Adequate residual limb musculature and cardiovascular endurance are key prerequisites for successful prosthetic use and community ambulation.
Question 2: Which type of cushion is most appropriate for a client with active ischial pressure injury who requires long-duration wheelchair seating?
- Solid foam contoured cushion
- Air-flotation alternating pressure cushion (Correct answer)
- Gel-foam combination cushion
- Standard polyurethane foam cushion
Correct answer: Air-flotation alternating pressure cushion
Air-flotation alternating pressure cushions redistribute pressure dynamically and are indicated for clients with active pressure injuries.
Question 3: A CMC is evaluating a vehicle for a driver with C6 tetraplegia. Which hand control configuration is most commonly recommended?
- Push-right angle hand controls
- Tri-pin spinner knob with push-pull controls (Correct answer)
- Left-foot accelerator with standard braking
- Joystick-only drive system
Correct answer: Tri-pin spinner knob with push-pull controls
Tri-pin spinner knobs with push-pull hand controls accommodate limited grip strength typical of C6 tetraplegia while providing adequate vehicle control.
Question 4: When selecting a manual wheelchair for a client with progressive MS, which design feature is most important for long-term usability?
- Ultra-lightweight rigid frame for maximum efficiency
- Adjustable rear axle position to accommodate changing needs (Correct answer)
- Fixed footrests for stability
- High backrest to support trunk posture at all stages
Correct answer: Adjustable rear axle position to accommodate changing needs
An adjustable rear axle allows the chair to be reconfigured as the client's functional level changes over the course of a progressive disease.
Question 5: Which accessible vehicle modification provides the greatest benefit for a passenger with a power wheelchair who cannot self-transfer?
- Hand controls
- Lowered floor with ramp or lift (Correct answer)
- Swivel seat base
- Tie-down anchor reinforcement only
Correct answer: Lowered floor with ramp or lift
A lowered floor with ramp or lift allows the wheelchair user to remain in their chair and roll into the vehicle without requiring a transfer.
Question 6: A client with severe spasticity in both lower extremities uses a power wheelchair. Which seating component is most critical to address lower extremity positioning?
- Headrest with lateral supports
- Swing-away footrests with ankle straps and lateral knee supports (Correct answer)
- Reclining backrest
- Pelvic belt only
Correct answer: Swing-away footrests with ankle straps and lateral knee supports
Swing-away footrests with ankle straps and lateral knee supports control spastic lower extremity movements and maintain safe positioning.
Question 7: Which feature distinguishes a group 3 power wheelchair from a group 2 power wheelchair under Medicare coding guidelines?
- Ability to navigate outdoor terrain
- Power tilt, recline, or elevating leg rest capability (Correct answer)
- Higher weight capacity exceeding 300 lbs
- Bluetooth connectivity for smart device control
Correct answer: Power tilt, recline, or elevating leg rest capability
Group 3 power wheelchairs are differentiated from Group 2 by the inclusion of power positioning features such as tilt, recline, or elevating leg rests.
CMC Mobility Solutions & Product Knowledge 2
A client with unilateral transfemoral amputation asks about a power wheelchair vs. a prosthesis for community mobility.
Which factor most strongly favors recommending a prosthesis?