Abstract: A plate is provided with a plurality of holes formed based on the combination of two identical cylindrical holes. The cylindrical holes are provided with conical threads. One of the holes is provided with a descending spherical milling that makes up a grading that starts over the initial center with an initial depth and finishes over the ending center with a final depth. A corresponding quantity of compressive screws with rounded head enable the adjustment from an initial position on the initial center up to a final position in the end center and accepts their replacement for blocked screws with conical thread located in said final position.