MEDICAL INDICATIONS Operated or unoperated sprains or fractures of the metacarpophalangeal joint of the thumb Displaced or non-displaced fractures at the head of the first metacarpus or base of the first phalange Root arthrosis CHARACTERISTICS Thumb splint with a plastic insert that is heat-formable at a low temperature Covers the thumb-index finger split perfectly Immobilization of the first phalange of the thumb Radio-transparent and ambidextrous splint