COMPUTER-AIDED BONE DISTRACTION

摘要

A computer assisted orthopedic surgery planner software for generation of 3D (three dimensional) solid bone models from two or more 2D (two dimensional) X- ray images of a patient's bone. The computer assisted orthopedic surgery planner software reconstructs the bone contours by starting with a 3D templa te bone and deforming the 3D template bone to substantially match the geometry of the patient's bone. A surgical planner and simulator module of the computer assisted orthopedic surgery planner software generates a simulated surgery plan showing the animation of the bone distraction process, the type and the size of the fixator frame to be mounted on the patient's bone, the frame mounting plan, the osteotomy/coricotomy site location and the day-by-day length adjustment schedule for each fixator strut. All bone models and surge ry plans are shown as 3D graphics on a computer screen to provide realistic, pr e- surgery guidance to the surgeon. Post-operative surgical data may be fed bac k into the computer assisted orthopedic surgery planner software to revise the earlier specified bone distraction trajectory in view of any discrepancy between the pre-operative plan data and the actual, post-operative data.