This orthosis has been specially designed for radial nerve palsy or drop-hand syndrome but can also be used for other diagnostic groups. It can replace and support weak muscles and support a functional grip. The kit consists of a dorsal wrist part with a thermoplastic insert, finger platform, a thumb piece and a foam strap. The foam strap can replace the finger platform when used as a night splint. The thermoplastic piece can be molded individually over the dorsal part of the hand by using hot water (75-80 degrees C). That can be done either directly in the pocket of the brace or externally and then inserted into the pocket once it’s stable. The dorsal splint creates a platform where the finger and thumb parts can be attached for individual extension assist.