Category: lower extremity disabilities

Customized Four-Wheel Bike

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CUSTOM ADAPTATION PURPOSE: To provide mobility for a child with Ullrich congenital muscular dystrophy. Although the child has a wheelchair, it proved difficult to maneuver in the house and did not provide any lower extremity exercise. It was discovered that a four-wheeled bike without pedals worked well for him, allowing him to propel the bike with his feet. However, commercially-available models were not strong enough for daily mobility use, so a custom model was built. The forks and handlebars were recycled from an existing unused bike. The remainder of the frame was made from 19-millimeter steel tubing. The frame includes a high-riser bar at the back with a height-adjustable thoracic support with lightly padded support fins. The height-adjustable seat is a standard wide seat for and exercise bike. TITLE: Mobility Bike. The handlebars, which are also height adjustable, were cut to size and rotate a full 360 degrees. The front forks were mounted at a slight angle, enabling them to self-center from turns up to 90 degrees. The bike is equipped with four standard lawnmower wheels. However, as the bearings were stiff, they were replaced with new ones made of Delrin, a lightweight, low-friction, water-resistant engineering plastic. JOURNAL: TAD Journal. REF: Volume 27, Number 3, October 2007: p. 6-7. PAGES: 3 (including cover).


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Technical Aid To The Disabled (TAD)
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TAD is a charity organisation that has the authority to fundraise. TAD uses volunteers dedicated to the design, construction and provision of aids for people with disabilities. Members of TAD provide a resource pool comprising a range of design, engineering, rehabilitation, computer, therapy and other professional and technical skills. Aids custom-designed by TAD volunteers are described in the TAD Journal.

Therapeutic Aids