You can get the wheelchair through the front door and still have a chair that does not work in the house.

The bathroom door may be too tight. The footrests may catch the bedroom frame. The chair may enter the kitchen but leave no room to turn around. A thick rug may stop the small front wheels. You may discover that the only usable exit has steps.

Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.

Then the missing space becomes your job. You lift, pull furniture, remove footrests, steady your parent or carry things the chair cannot pass. That is not a small inconvenience. It is a care task, and it can quietly attach itself to every trip to the toilet, every meal and every appointment.

Before you accept, borrow or order a wheelchair, test the whole route your parent will actually use.

Start with the person, not the doorway

A chair that fits the house but does not support your parent properly is not the answer. Ask the clinician, physical therapist or occupational therapist recommending the chair what measurements and features your parent needs. Ask who will adjust the seat, footrests and armrests, and who will teach your parent and any helper how to use the chair.

The National Institute on Aging advises having a cane or walker checked for correct size and notes that a physical or occupational therapist can help select and teach the use of mobility equipment. Apply the same basic rule here: do not choose a wheelchair from a photograph or because a neighbor has one available.

If the chair is borrowed, ask a qualified provider to check it before treating it as the household solution. Free equipment can still be the wrong equipment.

Get the chair's working measurements

Ask the supplier for the chair's total width at its widest point. That may be wider than the seat measurement printed in the product name. Include the hand rims, wheels, armrests or any other part that projects outward.

Also ask for:

• The total length with the footrests attached
• The length with the footrests swung aside or removed
• The chair's folded width, if folding matters for the car
• The seat height
• The chair's turning needs
• The weight of the chair and the weight of any removable pieces
• Which parts a caregiver is expected to lift, release or reposition

If the chair will be pushed by another person, test it with that person behind it. The chair may clear a doorway while the person pushing it has nowhere to stand, turn or reach the handles.

Measure the clear opening, not the door label

Open each door as far as it normally opens. Measure the usable space between the door and the opposite stop or frame. Do not rely on the nominal size of the door.

Check what steals space from the opening: hinges, a door closer, a raised threshold, a towel bar, a floor vent, trim or a piece of furniture waiting just inside. Measure at the narrowest point the chair must pass.

Do this for the front or side entrance, the route to the toilet, the route to the bed and the route to the place where your parent will eat. If bathing is part of the plan, include that route too.

The National Institute on Aging's home safety guidance recommends reviewing the home room by room, keeping walking paths clear and arranging furniture so it does not obstruct movement. That advice is more useful when you apply it to a real route instead of declaring the whole house accessible.

Use a cardboard footprint before the chair arrives

If you do not have the chair yet, mark its width and length on flattened cardboard or the floor with removable tape. Include the footrests.

Move that footprint through the planned route. Stop at every turn. Can it enter the bedroom and line up beside the bed? Can it approach the toilet in the direction your parent needs? Can it turn around, or will someone have to back it through the hall?

Do not measure only the empty house. Put the laundry basket back. Open the bathroom door. Leave the dining chair where it sits during meals. Include the oxygen tubing, pet bowls, side table or other ordinary objects that will still exist after the measuring tape is put away.

You are not trying to make the house look good for an assessment. You are trying to find out whether an ordinary Tuesday works.

Test the four routes that cannot be pretend routes

The toilet route: Start where your parent spends most of the day. Travel all the way to the toilet. Include every doorway and turn. Ask whether the bathroom door can close after the chair enters and whether the helper has enough room for the transfer method taught by the care team.

The bed route: Check whether the chair can approach the side of the bed that will actually be used. A chair that reaches the bedroom but cannot be positioned for the planned transfer has not reached the bed.

The meal route: Test whether the chair can reach the table or another eating surface without blocking the only path through the room. Check where footrests, knees and armrests sit in relation to the table.

The exit route: Travel from the usual sitting place to the door and onward to the vehicle or pickup point. Include thresholds, porches, steps, ramps, gates and tight turns. The National Institute on Aging's home safety checklist specifically asks whether an entrance can be modified if a walker or wheelchair is needed.

Decide what happens at every barrier

When the chair does not fit, write down the barrier and the proposed answer. Do not settle for “we will manage.” Name who does what.

A useful list looks like this:

• Bathroom doorway: supplier will confirm whether a suitable narrower chair exists
• Hall table: sister will remove it before the chair arrives
• Bedroom turn: occupational therapist will review the setup
• Front steps: caregiver program will be asked about local home modification resources
• Chair into car: named person will test loading it before the first appointment

Some barriers may be solved by rearranging furniture. Some require a different chair, a different room setup, a professional home assessment or a home modification. Some reveal that one person cannot make the route work alone. The point of measuring is to learn which problem you actually have.

Ask the supplier questions that expose the leftover work

Before accepting the chair, ask:

• Can we try this model in the home before finalizing it?
• What measurements describe the full chair rather than only the seat?
• Who adjusts the chair to the user?
• Who teaches safe operation and folding?
• Are footrests or wheels removed for transport, and can the regular caregiver manage that?
• What happens if the chair does not fit the essential route?
• Who handles repairs?
• If the chair is rented, what is the process for exchanging it when needs change?

If Medicare coverage is involved, Medicare says a walker must be prescribed for use in the home and supplied through eligible providers and suppliers. Wheelchair coverage has its own conditions. Ask the prescriber and supplier to identify the exact coverage requirements, whether the supplier accepts Medicare assignment and whether the equipment is rented or purchased. Do not let “insurance should cover it” stand in for an answer.

Run one ordinary trip before calling the setup finished

With the person who will use the chair and the person who will usually help, complete one real route under the instructions provided by the care team. Go from the usual chair or bed to the toilet, then to the eating area and out the normal exit.

Notice every moment when the helper has to move an object, hold a door, remove a footrest, lift part of the chair or reposition the person. Write those steps down. They are now part of the care plan.

If the route depends on you being present, say that plainly. The chair did not create independent access. It created a task only you currently know how to perform.

Ask for a home assessment when the fit is complicated

You are allowed to say that you cannot solve this with a tape measure and guesswork. Ask the health care provider whether a physical therapist, occupational therapist or other appropriate professional can assess the person using the equipment in the home. The National Institute on Aging identifies these professionals as possible sources of home safety assessment and recommendations.

If you are in the St. Louis area, Aging Ahead's caregiver program is one place to ask about caregiver support, respite and connections to practical resources. Use the contact information collected in Local Help for Caregivers in St. Louis and ask specifically whether home assessment or modification resources are available for your parent's location and situation.

You do not have to redesign an entire house tonight. You do need an honest answer about whether the chair can reach the toilet, bed, food and exit without turning you into the missing piece every time.

Measure the route. Test the ordinary trip. Put every remaining task next to a name. That is how you find out whether the wheelchair fits the household, not just the person sitting in it.

Public guidance used here includes Medicare's coverage information for mobility equipment and the National Institute on Aging's materials on falls, home safety and aging in place. The site's source standards are explained on Sources.