Which condition is associated with rim projections?

• A. Eliminates friction.
• B. Increases wheel weight.
• C. Grip deficits or hand deformity.
• D. Improves grip without training.

Answer: (C)

Rim projections are modifications added to the handrim of a wheelchair to help people grip and propel if their hands don’t grip a smooth surface well. When grip strength is reduced or the hand is deformed, a plain round rim can slip or be hard to hold. Projections create multiple contact points and more surface area, giving the fingers something to hook onto and increasing stability during propulsion. This makes those with grip deficits or hand deformities able to push more securely and with less effort. They don’t primarily eliminate friction, don’t mainly add weight, and they still require practice to use effectively.