Orthopaedic products, surgical equipment, and computer assisted surgical equipment, namely, medical apparatus for robot-assisted applications in the nature of determing the position, locating and providing three dimensional representations of surgical implants and fixing elements placed in the bodies of humans; medical instruments and apparatus, namely, computer hardware, software and cameras, sold as a unit, and reflective arrays, namely, metal prongs with reflective portions, for tracking the position of patient anatomy and surgical instruments, all for diagnostic and treatment purposes; medical and surgical robots and parts therefor; robotic bone resection instrument guides; apparatus for controlling medical or surgical robots, namely, computers, monitors and software programs for navigation; Electro-medical systems for navigation comprised primarily of medical components for precisely positioning patients for computer assisted surgery; devices for detecting and adjusting radiation points for medical purposes; pointers, registration markers and body markers used in computer assisted surgery