Higher-riskArticle link

Adapting Mobility and Preventing Falls for Someone with Posterior Cortical Atrophy (PCA)

Posterior Cortical Atrophy (PCA) brings unique challenges to mobility and fall prevention because it affects the brain's visual and spatial processing centers first. Your loved one may have excellent memory and reasoning early on, yet struggle to see where the floor ends, judge depth, or notice obstacles. This can make walking feel like navigating a shifting landscape. The good news: there are concrete, practical steps you can take to adapt the environment, choose the right mobility aids, and build strength safely. This guide focuses specifically on PCA-related visual-spatial difficulties and the movement changes that can arise, so you can help your person stay steady and confident.

Key points

  • PCA affects visual-spatial processing first, making falls more likely even when memory is intact. Adapt the environment with high-contrast markers, consistent furniture placement, and non-slip surfaces.
  • Choose mobility aids carefully: a standard four-legged walker with tennis balls is often safer than a wheeled walker for someone who may forget to lock the brakes.
  • Always have your person wear supportive, non-slip shoes indoors — never socks on wood or tile floors.
  • Work with a physical therapist early to build strength and balance, and to select the right aid. Do not wait until after a fall.
  • Use a padded gait belt with handholds for safe transfers and walking assistance.
  • Monitor for myoclonus (rhythmic jerks) and discuss with the neurologist if it affects balance.
  • Keep a consistent daily movement routine to maintain strength and confidence.
  • Address depression and anxiety — they can reduce motivation to move and increase fall risk.

Why PCA Changes Mobility and Fall Risk Differently

As PCA progresses, some individuals develop a movement disorder called myoclonus — brief, rhythmic jerks, often in the fingers or hands, but sometimes affecting the whole body. While usually mild, in some cases myoclonus can be strong enough to throw someone off balance or out of a chair. Additionally, changes in walking (gait) can occur, sometimes due to neurological changes, but often simply because the person becomes more cautious as they struggle to interpret their surroundings. Understanding that these symptoms are part of the PCA process, not a failure of effort, helps you respond with patience and targeted strategies rather than frustration.

General caregiving information, not medical advice. Check medications and major care changes with your clinician.

Step-by-step

  1. Start with a professional assessment: Request a referral to a physical therapist (PT) who has experience with dementia and visual-spatial disorders. The PT can evaluate your person's specific gait, balance, and visual challenges, and recommend the right mobility aid and exercises. Do not wait until after a fall — early intervention with therapy can improve stability and reduce fear of falling.

  2. Choose the right footwear: Have your person wear well-fitting, supportive shoes with non-slip soles at all times, even indoors. Avoid backless shoes, high heels, or any footwear with slippery soles. Socks alone on wood or tile floors are a major fall risk. Look for shoes with a wide base and good traction — think of them as 'grippy tires' for the feet.

  3. Select mobility aids carefully: Work with the PT to choose between a cane or walker. For someone with PCA, a standard four-legged walker (the classic silver frame with tennis balls on the back legs) is often safer than a wheeled walker with a basket. Why? Because wheeled walkers can roll forward if the person forgets to lock the brakes before standing up, causing them to lunge forward. The classic walker stays put and provides stable support without needing to remember to lock it. If a wheeled walker is preferred, ensure the person can consistently lock the brakes before use.

  4. Modify the home environment for visual-spatial safety: Remove throw rugs, secure loose cords, and ensure clear pathways. Add high-contrast tape to the edges of steps, door thresholds, and changes in floor level. Use nightlights in hallways and bathrooms. Place a contrasting-colored mat at the bottom of stairs to signal a change. Keep furniture in consistent positions — do not rearrange rooms, as this can disorient someone with PCA.

  5. Install grab bars in key areas: Have a handyman securely install grab bars by the toilet and in the shower/tub. These provide stable support for sitting down, standing up, and transferring. Also consider a handrail on both sides of stairways. Non-slip mats in the bathroom, kitchen, and on porches add extra traction on wet surfaces.

  6. Use a gait belt for transfers: A padded gait belt with multiple handholds provides a safe way to assist your person when they are getting up from a chair, using the toilet, or walking. It gives you a secure grip without pulling on their arm or clothing, which can cause injury. Practice putting it on together so it becomes a routine part of getting ready to move.

  7. Encourage daily physical activity: Keeping your person moving is one of the best ways to prevent falls. Engage in regular, enjoyable activities like walking (at their pace), seated exercises, or balance training (e.g., standing at a counter and lifting one foot). Make it part of a daily routine — for example, a short walk after breakfast. Monitor for safety and adjust the activity based on their energy and ability that day.

  8. Use visual cues and verbal prompts: When helping your person navigate, use clear, simple language. Say, 'Step up now' or 'Watch the step here.' Point to where you want them to step. Avoid rushing. If they seem hesitant, pause and reassure them. Sometimes a gentle touch on the elbow can guide them without startling them.

  9. Monitor for myoclonus and other movement changes: If you notice rhythmic jerks that seem to affect balance, discuss them with the neurologist. While most myoclonus does not need treatment, in severe cases medications may help. Do not assume all unsteadiness is just 'clumsiness' — it could be a treatable symptom.

  10. Consider a personal alarm or monitoring system: If your person is at high risk of falling, a wearable alarm or a motion sensor can alert you if they get up at night or have a fall. This allows you to respond quickly, reducing the time they spend on the floor and the risk of complications.

What not to do

  • Do not use a wheeled walker with a basket without first training the person to lock the brakes every time they stand. The basket encourages them to lean forward, and if they forget to lock it, the walker can roll away, causing a forward fall. Instead, start with a standard walker without wheels, or use one with a seat that requires sitting to rest.

  • Do not rearrange furniture or change the layout of rooms. People with PCA rely on spatial memory to navigate. Moving the couch or table can cause them to bump into it or lose their bearings. Keep the environment consistent and familiar.

  • Do not rush them when walking or transferring. Hurrying increases anxiety and the risk of missteps. Allow extra time for every movement. Use a calm, encouraging tone and give them time to process your instructions.

  • Do not assume they are being stubborn if they refuse to use a walker or cane. They may not be able to see it properly or remember to use it. Instead of forcing the issue, work with the PT to find a device that feels comfortable and natural. Sometimes a different color or style can make it more acceptable.

  • Do not let them walk on slippery surfaces in socks or loose-fitting clothing. Long robes or pants can trip them. Always have them wear shoes with good traction, even indoors. If they resist, try slip-on shoes with non-slip soles that are easy to put on.

  • Do not ignore signs of depression or anxiety. People with PCA often have insight into their declining abilities, which can lead to sadness, withdrawal, or fear of falling. These mood changes are treatable with counseling or medication. A happier, more confident person is more likely to stay active and safe.

Practical tools

  • The 'Tennis Ball Walker' Setup

    For a standard four-legged walker, cut tennis balls and place them on the back legs. This allows the walker to slide smoothly without needing to lift it, and it stays close to the person when they stand up. It eliminates the need to remember to lock brakes and reduces the risk of the walker rolling away. Ask your PT or home health company to help fit it properly.

  • High-Contrast Tape and Floor Markers

    Use brightly colored tape (e.g., yellow or red) to mark the edges of steps, door thresholds, and changes in floor level. Place a contrasting mat at the bottom of stairs. This helps the person with PCA see where one surface ends and another begins, reducing missteps.

  • Padded Gait Belt with Handholds

    A gait belt with multiple padded handholds gives you a secure, comfortable grip to assist with transfers and walking. It is more comfortable than a standard belt and provides better coverage. Practice putting it on together so it becomes a normal part of getting ready to move. Look for one with a plastic snap closure that is easy to fasten.

  • Non-Slip Footwear Checklist

    Create a simple checklist for footwear: (1) Shoes have non-slip rubber soles. (2) Shoes are closed-toe and fit snugly without being tight. (3) No backless or high-heeled shoes. (4) Socks are only worn on carpet, never on wood or tile. Keep this list near the door or in the closet as a reminder.

  • Daily Movement Routine Card

    Write or print a short, simple routine for daily movement: e.g., 'Morning: 5-minute walk to the kitchen. Afternoon: 10 seated leg lifts. Evening: 5-minute walk to the bathroom.' Post it on the refrigerator. This builds strength and balance consistently, and makes activity a predictable part of the day.

  • Visual Cue Cards for Transfers

    Create small cards with simple pictures or words for common movements: 'Stand up,' 'Sit down,' 'Step up,' 'Turn around.' Hold up the card while giving the verbal instruction. This can help the person with PCA process the action more easily, especially if they are feeling overwhelmed or confused.

Discuss with your clinician

Ask the neurologist: 'Could my person's myoclonus be contributing to falls? Are there medications that might help without causing sedation or other side effects?'

Ask the primary care doctor: 'Are any of my person's current medications increasing fall risk? Can we review and possibly reduce them?'

Ask the physical therapist: 'What specific exercises can we do at home to improve balance and leg strength, given the visual-spatial challenges of PCA?'

Ask the occupational therapist: 'What adaptive equipment (e.g., raised toilet seat, shower chair, grab bars) would be safest for our home layout and my person's specific needs?'

Ask the doctor about a referral to a falls prevention program or a community-based balance class (e.g., Tai Chi for older adults).

Related guides

Sources