Understanding the Root Causes of Sliding
To effectively address the issue of sliding, it's essential to understand the underlying reasons. It's often a combination of physical and environmental factors.
Physical and Physiological Factors
- Muscle Weakness and Fatigue: As we age, a natural decline in muscle strength, particularly in the core, legs, and back, makes it difficult to maintain an upright, stable posture for extended periods. Individuals may slump forward to compensate, initiating a slide.
- Poor Posture and Pelvic Tilt: A posterior pelvic tilt, where the hips roll backward, causes the user to slump and slide forward in the chair. This can be caused by muscle imbalances, comfort-seeking behaviors, or discomfort.
- Hamstring Tightness: Tight hamstrings can pull the pelvis into a posterior tilt, forcing the user to slide forward in an attempt to straighten their legs and find a more comfortable position.
- Sensation Changes: Reduced sensation due to conditions like neuropathy can limit a person's awareness of their positioning, making it harder to correct a slide instinctively.
Equipment-Related Factors
- Improper Wheelchair Fit: A wheelchair that is too wide offers inadequate lateral support, causing a person to lean and shift. If the seat is too deep, it can put pressure behind the knees and cause sliding. Conversely, a seat that is too short may cause the user to lean forward for support.
- Incorrect Footrest Height: If the footrests are set too high, pressure is placed on the bony parts of the hips. If they are too low, pressure falls on the back of the thighs. Both scenarios can trigger a cascade of poor positioning and sliding.
- Inadequate Cushioning: A standard, flat cushion offers little to no support for maintaining proper pelvic alignment. It can also increase pressure, prompting the user to shift and fidget.
Practical Solutions and Essential Equipment
Fortunately, a range of solutions and specialized equipment can significantly reduce the risk of sliding.
Positioning Aids and Cushions
- Anti-Thrust Cushions: These cushions have a raised front and a lower back, which helps to tilt the pelvis back into a neutral, stable position, preventing forward sliding.
- Pommel Cushions: Featuring a built-up area between the legs, a pommel cushion provides excellent slide control and helps keep the legs properly aligned.
- Non-Slip Seat Pads: These pads, with special high-friction material on the underside, prevent the cushion itself from shifting. Some even have a one-way slide feature that allows movement backward but not forward.
- Wheelchair Belts and Harnesses: Used properly, a pelvic belt can stabilize the user’s hips and prevent the pelvis from tilting forward. It is crucial to position the belt correctly across the pelvic bone, not the abdomen, to avoid injury. For more comprehensive support, a torso support vest can prevent leaning or tilting.
Comparison of Positioning Aids
Aid Type | Primary Benefit | Best For... | Considerations |
---|---|---|---|
Anti-Thrust Cushion | Corrects posterior pelvic tilt | General sliding prevention | May not be enough for severe cases. |
Pommel Cushion | Provides slide control and leg alignment | Individuals who slide forward significantly | Requires proper sizing to ensure comfort. |
Non-Slip Seat Pad | Secures the cushion to the chair | Preventing the cushion itself from shifting | Does not provide postural support on its own. |
Pelvic Belt | Stabilizes the pelvis and hips | Preventing sliding due to poor posture | Must be fitted correctly across the hip bones. |
Torso Support Vest | Offers comprehensive upper body stability | Preventing tilting or leaning for those with significant weakness | Requires careful fitting to avoid injury and must never be used as a restraint. |
Perfecting Positioning and Transfers
Even with the right equipment, proper technique is vital to ensure long-term safety and comfort.
Safe and Correct Seating
- Scoot to the Back: Ensure the individual is sitting all the way back in the wheelchair with their buttocks completely touching the backrest.
- Level the Pelvis: Check that the hips are level and the spine is straight. For those who need assistance, gently help shift their weight side to side to push them back into position.
- Adjust Footrests: Position the footrests so the feet are supported and the thighs are parallel to the floor.
- Support Upper Body: Make sure the armrests are at a height that allows the elbows to be slightly bent and the shoulders relaxed, providing stable upper body support.
Safe Transfer Techniques
- Lock the Brakes: Always lock the wheelchair's brakes before initiating any transfer. This is a non-negotiable safety step.
- Minimize Distance: Position the wheelchair as close as possible to the destination surface (e.g., bed, toilet, chair) to reduce the distance of the transfer.
- Use Proper Body Mechanics: Caregivers should bend at the knees and hips, not the waist, to protect their back. Maintain a wide base of support and keep the individual close to your body.
- Employ a Gait Belt: A gait belt provides a secure handhold around the person's waist, allowing for a safer and more controlled transfer. It's positioned around the waist, below the ribcage.
For more in-depth information on proper transfer techniques, visit the Physiopedia guide on Wheelchair Skills Training.
The Importance of Exercise and Therapy
While equipment and technique are crucial, maintaining a degree of physical strength is also vital for preventing sliding. Occupational and physical therapy can play a significant role.
How Therapy Helps
- Strengthening and Conditioning: Therapists can provide specific seated exercises to strengthen the core and upper body, improving the ability to maintain an upright position.
- Posture Correction: Occupational therapists help patients practice proper seating alignment and develop the skills to adjust their own posture.
- Range of Motion: Regular exercises help to combat joint stiffness and muscle tightness, including tight hamstrings that contribute to sliding.
Promoting Independence
By helping seniors improve their physical capabilities, therapy empowers them to be more active participants in their care, boosting their confidence and independence.
Creating a Safe Environment and Maintaining Vigilance
Beyond individual techniques, the overall environment and a mindful approach are key.
- Regular Skin Checks: Poor posture and sliding increase the risk of pressure sores. Regular skin inspections are crucial for early detection and prevention.
- Awareness and Education: Caregivers should be educated on the risks and prevention strategies associated with wheelchair sliding. This includes recognizing early signs and knowing how to respond.
- Listen to the Senior: Often, sliding is a sign of discomfort. Listen to the individual's concerns about pain or positioning, as they are the best source of feedback.
Conclusion
Sliding out of a wheelchair is a serious concern, but it is largely preventable with the right combination of tools, techniques, and care. By addressing the root causes, implementing effective positioning aids, teaching safe transfer methods, and encouraging physical activity, caregivers can ensure the safety, comfort, and dignity of their elderly loved ones. A proactive approach is the best way to prevent falls and create a stable, supportive environment for those who rely on a wheelchair for mobility.