A comparative study of a purpose-made cock-up orthoplast splint with a ready-made Camp Droitwich splint, was undertaken in 12 children with juvenile chronic arthritis involving the wrists and carpi. The splints were randomly allocated so that in half, the dominant hand received the orthoplast and in half the non-dominant. Assessments of joint range, grip strength and functional activities were undertaken at 3 and 6 months after use of the splint; the durability of the splints was also assessed. Overall both splints performed their function adequately, the Camp Droitwich being preferred for comfort, but the orthoplast maintaining a slightly better joint position.