The JuzoPro Rhizo Soft thumb orthosis ensures optimum immobilization of the carpal joint, the saddle joint, and the basal joint of the thumb, but wearing it does not interfere with the basic function of the hand. This orthosis consists of an adjustable but extremely stable aluminum reinforcing frame, a novel fastening feature, and a recently developed base material that ensures comfort when wearing. The thumb orthosis is ideal for stabilizing the thumb following indications of tendovaginitis stenosans de Quervain or SMS thumb, arthrosis of the radial metacarpus, and saddle joint arthrosis. It is also ideal for use when recovering from thumb sprains or strains.