The Navio surgical system features proprietary robotic-assisted technology that integrates handheld intelligent instruments with an intuitive CT-free registration and patient-specific planning process. The Navio unicondylar and patellofemoral knee replacement software applications guide the surgeon in creating implant plans that localize components and balance soft-tissue. The technology translates that information into a virtual surgical plan that removes the need for standard mechanical cutting guides and jigs. The handheld instrumentation uses multiple control modes to help the surgeon very precisely prepare the bone for implantation.