Patent ID: 8236000

Claim:
Apparatus for use in performing an open wedge, high tibial osteotomy, the apparatus comprising: an adjustable base assembly, the adjustable base assembly comprising: a base; an anterior arm attached to the base; a first opening extending through the anterior arm and the base for receiving a frontal fixation pin for pivotally mounting the adjustable base assembly to a tibia; a hinge pin slider slidably mounted to the anterior arm for selective disposition along the anterior arm, the hinge pin slider including a hinge pin aimer for receiving a hinge pin; a second opening extending through the base for receiving an antero-medial fixation pin for pinning the base to the tibia; and a biplanar alignment assembly for mounting to the adjustable base assembly, the biplanar alignment assembly comprising a biplanar alignment bar formed at least in part out of a radio-opaque material, wherein the biplanar alignment bar comprises a front section, a pair of side sections extending at a right angle to the front section, and a pair of vertical sections extending at a right angle to the pair of side sections, and further wherein the front section is configured to be mounted to the adjustable base assembly parallel to the anterior arm.