Surgical implants for spinal surgery comprising artificial material; surgical instruments for spinal surgery; surgical apparatus, namely, surgical visualization systems comprised of a camera, a camera control unit with embedded software, light sources, electrical adapters, video monitor, and parts for all of the foregoing sold as a unit for medical use; surgical instrument trays for use in spinal surgery; surgical devices for use in spinal surgery, namely, devices to assess muscle and nerve function, to detect nerve proximity, and to detect nerve location; surgical devices and instruments for use in surgical, therapeutic, pain management, and diagnostic applications, namely, medical devices and instruments for use in spinal surgery; medical apparatus in the nature of a medical workstation comprised of surgical instruments, medical electrodes, computer hardware, computer operating software, and a LCD screen display for gathering and displaying patient image data for use during spinal surgical procedures; surgical trays and cases for holding and transporting surgical instruments for use in spine surgery; medical devices for use in surgical navigation comprised of surgical instruments and optical array elements for tracking products, namely, active and passive markers attached to surgical tools to track a surgical instruments position and orientation during the surgery