Rear anti-tip devices for manual wheelchairs: Effect of new vs conventional design on performance, user satisfaction and social participation

Conventional rear anti-tip devices (C-RADs) for manual wheelchairs can only improve stability at the expense of the wheelchair user's (or caregiver's) ability to maneuver in tight spaces and negotiate obstacles. We have developed a new Arc-RAD (so-called because the anti-tip arm moves through an arc when loaded by a rear tip) that appears to enhance both safety and performance. The objective of the proposed study is to determine whether the Arc-RAD improves the performance of manual wheelchair users. We will compare the performance of two subject groups (Arc-RAD and C-RAD). To do so, we will use a number of measures, including our Wheelchair Skills Test and subject feedback. The results of this study will provide valuable information about the efficacy of the new design and which segments of the wheelchair-user population benefit most. Such an understanding will be of great assistance to the successful commercialization of this product.