Knee arthroplasty validation and gap balancing instrumentation

A knee arthroplasty validation system for intraoperative validation of cut surfaces, the system comprising:

• a robotic surgical device including processing circuitry, the robotic surgical device to assist in a tibiofemoral joint resection of a patient tibia or a patient femur, the tibiofemoral joint resection including a horizontal resection and a vertical resection;
• a solid knee arthroplasty validation device positioned to contact the horizontal resection and the vertical resection, the solid knee arthroplasty validation device including a horizontal resection validation surface, a top validation surface opposite from the horizontal resection validation surface, a vertical resection validation surface orthogonal to the horizontal resection validation surface, the vertical resection validation surface to contact and validate the vertical resection, a distal portion to validate a posterior tibial plateau resection gap, a proximate portion to validate an anterior tibial plateau resection gap, and an anterior stop configured to rest against a tibial anterior cortex of the patient tibia;
• and
• an optical tracker fixedly attached to the proximate portion of the solid knee arthroplasty validation device;
• wherein the knee arthroplasty validation device includes a gap validation thickness between the top validation surface and the horizontal resection validation surface, the gap validation thickness being different in the proximate portion from the distal portion;
• wherein the processing circuitry of the robotic surgical device validates the vertical resection validation surface, the posterior tibial plateau resection gap, and the anterior tibial plateau resection gap based on a tracked validation position of the optical tracker and triggers an update on a display to indicate completion of the validation.