US Patent 10194993 Spinal surgery navigation

A system for aiding surgery on a patient is described including a display device and a storage device that stores an image of at least a portion of the anatomy of the patient, including one or more surgical navigation markers positioned on the patient, for display on the display device. An analyzer is adapted to receive positional data of a probe based on positioning of the probe relative to the one or more markers on the patient. Based on the positional data, the analyzer outputs correctional data to adjust an alignment of the image on the display device to match locations of said one or more markers.