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CUSTOM ADAPTATION PURPOSE: To provide support while eating for an individual with Parkinson's disease who leans to the right when fatigued. The dining chair was created from a standard office chair with a high back and a central metal back post. Because the chair was intended only for use over short periods, a single thoracic fin was added to adapt the chair, rather than the usual pair of fins. A plywood mounting plate was fixed to the right armrest and the back of the seat with metal brackets. The fin was fitted with two 5/16-inch threaded studs projecting sideways which fit through the mounting plate and were secured by wing nuts. To allow height adjustment of the fin, its mounting plate was attached to the plywood mounting plate by screws through a set of holes in a vertical line to permit incremental sdjustments. To limit the swivel of the chair to 90 degrees, the hub around the center column was used to mount a wooden base fitted with two 90-degree stops. A timber striker was bolted in place on the under side of the seat and extended sufficiently to reach the stops on the base plate. To lock the seat at each 90-degree stop, a spring-loaded aluminum latch was installed at each location. A lever installed at the side of the base was connected to the latches by fine stainless steel wire. When the lever was moved to a stop, both latches released so the seat could be moved to the required position; when the lever was released, the seat locked in position. The five-legged wheeled base of the chair also needed to be fixed to the floor to prevent movement when the seat was turned. The chair was placed on a mat and the base was fitted with four press-down door stops that could be foot operated to keep the chair in position. TITLE: Chair Support. JOURNAL: TAD Journal. REF: Volume 26, Number 2, July 2006: p. 18-19. PAGES: 3 (including cover).
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