Laminoplasty hinges

A surgical implant device configured to be adjustable in size and orientation so as to be adaptable to a surgical site, the surgical implant device, comprising:

• a base and an extension adjustably connectable to the base to enable adjustment of both planar and angular orientations of the surgical implant device,
• the base having a seat and a back extending from the seat, and a pair of spaced apart and aligned elongate slots located at a distal end of the back of the base, and
• the extension having an elongated body with a head at an end of the elongated body of the extension, the head having oppositely extending arms, one of the oppositely extending arms of the head of the extension is longer than the other one of the arms, the head of the elongated body of the extension being positionable between the slots of the base so that the arms of the head of the elongated body span between the slots of the back of the base,
• wherein when the head of the extension is positioned between the slots of the base when the surgical implant device is installed in a patient during surgery, the head of the extension is freely pivotable within the slots of the base to permit a plurality of angular orientations of the surgical implant device and the head is movable along the elongate length of the slots to provide adjustable planar orientation of the surgical implant device based on the location of the head along the elongate length of the slots.