10 medical apparatus and instruments for endoscopic surgery; medical endoscopes; medical instruments attachable to endoscopes; adapters for attaching an endoscope to a medical instrument during an endoscopic procedure; modular power and data cables that attach to an endoscope during an endoscopic procedure; carrying case adapted for an endoscope; portable displays, monitors, and controllers used with endoscopes during endoscopic procedures; optical orthopedic cannulas