A pair of clamps are attached to a damaged bone one each side of a fracture site during a surgical reduction, one clamp on each side of the fracture site, after which the two clamps are slidably engaged to a single alignment bar, with the clamps then being adjusted to properly align the bone for a surgical attachment using a bone plate. Each clamp provides axially adjustable plate retainers which slides along a track on the end of each segment of the each clamp to position the retainers at a location where the bone plate is to be attached to the bone. Upon positioning, the bone plate is held against the bone with the bone still in proper alignment wherein screws anchor the plate to the bone, stabilizing the fracture site during the plate attachment procedure.
