An outrigger suitable for use with a dynamic splint, the outrigger comprising a support, a lever pivotally connected to the support, and spring means cooperating between the support and the lever to urge the lever to pivot towards a first position, wherein the outrigger further comprises means for adjustably affixing the support to a mounting assembly. The spring means can comprise a coil spring or a cam and cam follower arrangement and the location of the pivot between the lever and support and a joint of a user is suitably configurable, via adjustment of the location of the outrigger on the mounting assembly to provide a substantially constant restoring force to an affected body part throughout a range of movement of the splint. The splint can be used to treat a range of body parts, including finger joints, knee joints, ankle joints, for example.
