A self-propelled wheelchair is a type of wheelchair that is designed to be manually propelled by the user themselves, without the need for assistance from another person. It is equipped with large rear wheels, typically positioned towards the outer sides of the wheelchair frame, which allow the user to grip the wheel rims and propel themselves forward or backward.

A self-propelled wheelchair works by allowing the user to manually propel themselves using the large rear wheels of the wheelchair. Here's a step-by-step explanation of how a self-propelled wheelchair operates:

1. Positioning: The user sits in the wheelchair, ensuring that their body is comfortably positioned within the frame, with their feet resting on the footrests or footplates.
3. Grasping the wheel rims: The user reaches behind them and grips the wheel rims located on the sides of the rear wheels. The wheel rims are designed with a rough or rubberized surface for better grip.
4. Pushing and pulling: To move forward, the user pushes the wheel rims forward, using their upper body strength to propel the wheelchair. The user can continue pushing in a rhythmic motion to maintain momentum.
5. Braking and stopping: To slow down or come to a stop, the user can apply pressure on the wheel rims in the opposite direction or use the wheelchair's braking mechanism, which is usually located on the rear wheels.
6. Steering and maneuvering: By applying more force on one wheel rim than the other, the user can steer the wheelchair in the desired direction. For tighter turns, they can increase pressure on one wheel while reducing pressure on the other.
7. Uphill and downhill navigation: When encountering inclines or declines, the user may need to adjust their technique. Going uphill may require increased effort, while going downhill may necessitate controlled braking and leaning back for stability.
8. Safety considerations: It's important for users of self-propelled wheelchairs to be mindful of their surroundings, avoid obstacles, and ensure that they have the necessary upper body strength and coordination to operate the wheelchair safely.

Self-propelled wheelchairs offer individuals with sufficient upper body strength and mobility the freedom to independently navigate their environment. However, it's crucial to assess individual capabilities and consult with a healthcare professional or wheelchair specialist to ensure the proper selection and safe use of a self-propelled wheelchair.

Yes, a self-propelled wheelchair can still be pushed by another person if necessary. While the primary design of a self-propelled wheelchair is for the user to independently propel themselves using the rear wheels, there may be situations where assistance is needed. In cases where the user is unable to self-propel due to fatigue, injury, or other factors, another person can push the wheelchair from behind. The person providing the assistance can hold onto the handles at the back of the wheelchair and push it forward or backward, providing the necessary force for movement. Pushing a self-propelled wheelchair requires the caregiver or companion to walk behind the wheelchair and apply force to move it. It's important to ensure proper communication and coordination between the person pushing and the wheelchair user to ensure a smooth and comfortable ride.