Patent ID: 7318827

Claim:
A localization device for use in an osteotomy procedure to remove a wedge from a bone by making first and second cuts in the bone to reshape said bone, wherein, prior to removing said wedge, said bone extends between a first position corresponding to a first end of said bone and a second position corresponding to a second end of said bone and wherein, after removing said wedge, said second end of said bone is relocated to a third position such that a desired correction angle is produced between a first vector extending from the first position to the second position and a second vector extending from the first position to the third position, said device comprising: sensors for sensing information corresponding to the locations of markers associated with one or more of the bones and one or more surgical instruments; a computer coupled to said sensors for tracking the markers; means for recording an angle and depth of the first cut; means for determining a pivot point within the recorded first cut in the bone; and means for calculating a resection angle for making the second cut relative to the recorded first cut that will produce the desired correction angle when the wedge is removed from the bone.