Systems and methods for joint balancing

A method of determining femoral and tibial implant angulations for a knee arthroplasty procedure, the method comprising the steps of:

• inputting preoperative knee data to an input screen of a computing device, the preoperative knee data including initial femoral and tibial resection depths;
• selecting targeted postoperative knee data using the input screen, the targeted postoperative knee data including targeted implant angulations and implant angulation ranges, the targeted implant angulations including the femoral implant angulation with reference to a femur, and the tibial implant angulation with reference to a tibia;
• determining a plurality of planned implant angulations using a balancer algorithm of the computing device based on preoperative knee data and intraoperative knee data, the plurality of planned implant angulations being within the implant angulation ranges,
• scoring the plurality of planned implant angulations using the balancer algorithm based on a weighted combination of medial epicondylar drift, lateral column length, proximity to target angulations and gap deviations from ideal gaps;
• ranking the plurality of planned implant angulations based on the scoring to select final implant angulations;
• and
• displaying final implant angulations from the plurality of planned implant angulations on an output screen of the computing device, wherein the final implant angulations are within the targeted postoperative implant angulation ranges.