A surgical appliance for assisting in the repair of a fractured bone, such as a scaphoid bone, is disclosed. The device includes first and second adjustably interconnected and spaced apart limb clamping jaws that are transparent to x-ray radiation and are relatively movable toward and away from one another and a rotatable disk carried by the first jaw, said disk having a plurality of bores angularly disposed in the disk for selectively aligning a guide wire to be drilled percutaneously into the fractured bone. Each of the bores are in communication with the space between the first and second jaws and the longitudinal axes of said bores are directed to a common point intermediate the first and second jaws.