Mobility, Wheelchairs, and Home Modifications

Mobility challenges in PLS are shaped by spasticity, not by the rapid muscle weakness that defines ALS. The timeline is measured in decades. Equipment decisions made for a PLS patient need to reflect long-term use, changing spasticity patterns, and the fact that needs will evolve gradually — not in months, but over years.

Mobility with PLS is different

Research on PLS support-service use finds that 76% of PLS patients identify mobility as their greatest support need. That figure reflects a fundamental feature of the disease: in PLS, the upper motor neuron damage that drives spasticity directly limits walking, balance, and the ability to perform daily tasks — often for a very long time.

The mechanism matters for equipment choice. Spasticity-driven mobility loss calls for different tools than weakness-driven loss. Ankle-foot orthoses (AFOs) and spring-loaded braces that address foot drop and equinus positioning tend to be more central in PLS than in ALS. Powered wheelchairs acquired for ALS patients — who may lose arm function — are often unnecessary in early PLS, where upper limb strength is preserved. These distinctions should guide prescribing and purchasing decisions.

Because PLS progresses slowly, there is time to plan — and planning ahead consistently produces better outcomes than waiting for a crisis. The most useful thing to do after a PLS diagnosis is a physiotherapist and OT assessment, even when walking is still reasonably functional.

Walking aids: the early stages

The first mobility aid is usually a walking stick or cane, used when one leg is weaker than the other or when balance becomes unreliable. As weakness or spasticity progresses, a walking frame (rollator) with wheels provides more stability and allows leaning for rest.

Ankle-foot orthoses (AFOs) — custom-molded plastic braces that support the foot and ankle — are often prescribed for people with foot drop (inability to lift the front of the foot), which is a common early symptom of limb-onset ALS. An AFO prevents tripping and allows a safer gait.

Work with a physiotherapist and orthotist to select and fit the appropriate walking aid. An ill-fitted device can cause additional problems, and the right device changes as the disease progresses.

When to consider a wheelchair

The decision to use a wheelchair is often experienced as a significant psychological threshold. In practice, introducing a wheelchair — even part-time — before walking becomes impossible preserves energy for activities that matter more, reduces fall risk, and allows you to go places you otherwise could not.

Indicators that a wheelchair evaluation is timely include:

Falls or near-falls that have occurred
Significant fatigue from walking short distances
Difficulty covering the distances needed for daily activities
Any situation where fall risk is high (busy environments, uneven surfaces)

Getting a wheelchair assessment and order in place early is advisable — funding processes (insurance, Medicare, equipment loan programs) take time, and waiting until you urgently need a chair creates unnecessary gaps.

Types of wheelchairs

Manual wheelchairs

Standard manual wheelchairs require someone to push them if the user cannot self-propel. They are appropriate for people who retain upper limb function adequate for self-propulsion, or where a caregiver is available for pushing. Lightweight and transport-friendly.

Power wheelchairs

Power wheelchairs (electric wheelchairs) allow independent mobility without physical effort. They are appropriate when upper limb weakness prevents self-propulsion of a manual chair. Modern power chairs have sophisticated controls — joystick, head array, chin control, sip-and-puff — that can be adapted as hand and arm function changes.

Power chairs are expensive and require home access assessment — doorways, floor space, ramp access. Funding through Medicare Part B (as a power mobility device) requires a face-to-face examination by a physician and a written order. This process takes weeks to months.

Tilt-in-space and recline wheelchairs

For people who spend significant time in their chair, tilt-in-space and recline functions allow pressure redistribution, improved posture, and comfort. These features also assist with orthostatic hypotension and respiratory function in reclined positions.

Home modifications room by room

Bathroom

The bathroom is one of the highest fall-risk areas. Key modifications:

Grab bars by the toilet and in the shower/bath
Shower seat or roll-in shower
Handheld shower head
Non-slip mats
Raised toilet seat or commode
Wider doorway if wheelchair access is needed

Bedroom

Adjustable bed height for easier transfers
Hospital-style bed with adjustable back and leg positions for comfort and respiratory support
Bed rail for repositioning assistance
Nighttime lighting for safe movement

Living areas and kitchen

Remove loose rugs and reduce clutter for safe walking and wheelchair navigation
Rearrange furniture to create clear pathways
Lower worktop areas if wheelchair use is anticipated
Stair lift or stairlift assessment for multi-story homes
Ramp access at entrance

Transfer equipment

Transfers — moving between positions (bed to chair, chair to toilet) — become increasingly challenging and can be unsafe without the right equipment:

Transfer belt: A handled belt worn by the patient for the caregiver to hold during assisted transfers
Transfer board: A sliding board that bridges two surfaces (bed and chair) for lateral transfers
Stand-assist lifts: Mechanical devices that support a person from sitting to standing
Ceiling track hoist / portable hoist: For people who can no longer bear weight during transfers — lifts the person fully and moves them between positions. Requires planning and installation.

Vehicle adaptations

Maintaining the ability to travel independently is important for quality of life and social participation. Vehicle adaptations that support people with ALS or PLS include:

Hand controls for accelerating and braking when leg function is impaired
Wheelchair-accessible vehicles (WAVs) with ramp or lift access
Swivel seat transfers for easier entry/exit
Steering wheel modifications for one-handed or reduced-grip driving

A driver rehabilitation specialist can assess driving safety and recommend appropriate adaptations. Some adaptations require licensing reassessment.

Working with an occupational therapist

An OT experienced in ALS or MND is the most valuable professional resource for mobility planning. They can conduct a home visit assessment, identify specific hazards and needs, recommend equipment matched to your current and anticipated needs, and coordinate with other team members and equipment suppliers.

Request an OT home visit assessment before your mobility changes reach a crisis point — ideally within the first months of diagnosis.

Funding sources

Medicare Part B — covers power wheelchairs and other power mobility devices when criteria are met
Medicaid — coverage varies by state; home modification programs available in some states
ALS Association equipment loan programs — loan wheelchairs, communication devices, and other equipment at no cost to ALS patients
MDA (Muscular Dystrophy Association) — equipment and assistance programs for eligible patients
Veterans benefits — if the person with ALS is a veteran, VA benefits cover a wide range of mobility equipment
Home modification grants — various state programs and nonprofit organizations; social worker can help identify local options

Differences when PLS is compared with ALS

For people with ALS managed through the same clinics, the equipment trajectory is faster and often involves earlier transition to power wheelchairs as upper limb weakness develops. ALS loan programs and funding pathways were largely designed with ALS's pace in mind. PLS patients using the same resources may find that urgency criteria do not fit their situation — a social worker familiar with both conditions can help navigate this.