MEDICAL INDICATIONS Displaced or non-displaced fractures at the head of the first metacarpus or base of the first phalange CHARACTERISTICS Thumb splint with a plastic insert that is heat-formable at a low temperature Immobilization of phalange P1 (standard model) Or of phalanges P1 and P2 of the thumb (long model) Optimal immobilization of the thumb column with palm section covered Radio-transparent and ambidextrous splint