A lightweight, collapsible and transportable spica chair to be used by toddler, juvenile, and adult patients fitted with a spica cast. Foldable rigid frame supports mutually inclining and individually adjustable rest surfaces including a torso pad assembly and an adjustable leg support assemblies. The patient is supported at the stomach/torso region and at the legs so that the patient is able to "sit" comfortably in a semi-upright position for extended periods of time. An optional tray assembly permits the patient to place items of interest, such as food or toys, within easy reach.