Orthopedic surgery system for soft tissue balancing and implant planning

A computer assisted orthopedic surgery system for soft tissue balancing and implant planning comprising:

• a three dimensional position tracking system;
• a robot;
• a display;
• and
• a computer operatively in communication with the three dimensional position tracking system, the robot and the display, the computer including a processor configured to:
• acquire native gap data between a first bone and a second bone of a joint throughout a range of motion from the robot to calculate a native gap profile,
• simulate implant gap data between a first implant model on a first bone model of the first bone and a second implant model on a second bone model of the second bone of the joint throughout a range of motion based on an implant planning criteria to calculate a plurality of implant gap profiles each based on a unique implant planning criteria,
• determine a best match of the plurality of implant gap profiles to the native gap profile to determine an optimized implant plan, and
• output the optimized implant plan on the display.