How to Help Someone Choose the Right Wheelchair Size
Selecting the correct wheelchair size is essential for comfort and mobility. Follow these steps to ensure the best fit:
1. Assess Mobility Needs
• Determine the primary use: daily mobility, occasional use, or sports activities.
• Consider the environment: Will the wheelchair be used indoors, outdoors, or both？
According to the test standard EN12184:2022, the distinction between indoor and outdoor electrically powered wheelchairs, scooters is based on the results of the following test items:
| Test Item | Indoor Requirements | Outdoor Requirements | EN 12184 Clause |
| Max Slope Capability | ≥5° (1 minute duration) | ≥8° (2 minutes duration) | §8.2 Dynamic Stability |
| Min Turning Radius | ≤750mm | ≤900mm | §6.3 Maneuverability |
| Obstacle Clearance | 20mm (threshold) | 50mm (curb) | §7.4 Obstacle Crossing |
| Tire Type | Solid/Semi-pneumatic (hard surfaces) | Pneumatic/Deep-tread (mixed terrain) | §9.1 Tire Performance |
| Suspension System | Not mandatory | Shock absorption required | §10.2 Suspension |
| Anti-tip Stability | Static tilt ≥10° | Dynamic tilt ≥15° | §5.4 Stability Tests |
| Range per Charge | ≥15km (flat terrain) | ≥20km (incl. slopes) | §11.3 Energy Consumption |
| Water Resistance | IPX4 (water splashes) | IPX5 (water jets) | §12.2 Environmental |
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2. Consult a Healthcare Professional
A physical or occupational therapist can provide expert guidance based on the user’s specific needs and physical condition.
3. Take Accurate Measurements
Key body measurements include:
Essential Measurements for Wheelchair Sizing
1. Heel-to-Knee Length
Measurement Method:Â With the user seated, measure from the back of the heel to the back of the knee.
For Manual Wheelchairs (Arm Propulsion): Add 2 inches (5 cm) to the measurement for proper footrest clearance.
For Foot Propulsion (Self-Mobility):Â Use the exact measurement to ensure the user can comfortably reach the ground.
2. Accessibility Considerations
Measure doorways, elevators, and ramps to confirm the wheelchair’s width and turning radius will fit.
Ensure smooth maneuverability in tight spaces and around obstacles.
3. Precision Matters
Accurate measurements are critical for comfort, posture support, and ease of movement.
If uncertain, consult a healthcare professional or occupational therapist for expert fitting guidance.
