A standard forearm cast is applied, including the wrist joint in 30 degrees
of extension, and the aluminium splint is incorporated in the cast. This
aluminium splint must be pre-bent to 90 degrees proximal to the level of the
MCP joint of the injured finger. The finger is taped to this splint in an
intrinsic plus position. Correct rotational alignment must be checked. The
other fingers are not immobilized.
The cast must only be applied once the initial swelling has abated, usually
a few days after the injury.