Robotic arthroplasty system

A robotic system for use in performing an arthroplasty procedure of a patient, the robotic system comprising:

• a robotic mechanism configured to perform the arthroplasty procedure without being coupled to an operating table;
• a prosthetic implant;
• a saw coupled to the robotic mechanism for resecting a portion of one of the tibia and the femur of the patient through an incision in the leg of the patient, the robotic mechanism configured to control movement of the saw during the resection by use of an electric motor;
• a computer coupled to the robotic mechanism and configured to control the robotic mechanism;
• at least one navigation member positionable into engagement with tissue of the patient;
• an optical system coupled to the computer, the optical system configured to determine a location of at least one bone relative to other tissue in the patient, wherein the optical system is configured to provide location information of the at least one bone to the computer for use by the robotic mechanism;
• a position sensor configured to provide movement information of the robotic mechanism relative to at least one of the tibia and femur;
• and
• an interface coupled to the computer, the interface configured to operate the computer.

A robotic surgical system comprising:

• a robotic mechanism, the robotic mechanism configured to perform a surgical procedure without being coupled to an operating table and to control movement of a cutting tool coupled to the robotic mechanism during resection of at least a portion of a joint surface of a bone in the patient through an incision of a patient;
• a computer connected with the robotic mechanism;
• and
• a navigation system comprising:
• an optical sensing system connected with the computer;
• and
• at least one navigation member configured to couple to one or more tissues of the patient, wherein at least one navigation member has a reflective end visible to the optical sensing system,
• wherein the optical system is configured to determine location information of a bone relative to tissue based on the at least one navigation member.