Image-Based Implant Length Determination and Associated Systems, Devices, and Methods

A mobile computing device, comprising:

• an image acquisition unit configured to obtain at least one radiographic image, wherein the at least one radiographic image is representative two or more medical devices inserted into a body of a patient;
• a user interface;
• and
• a processor in communication with the image acquisition unit and the user interface, the processor configured to:
• determine, by a processor of the mobile computing device based on at least one of the two or more medical devices in the at least one radiographic image, a calibration factor of the at least one radiographic image;
• identify, for the two or more medical devices, a first rod connection point and a second rod connection point;
• determine, by the processor of the mobile computing device based on the first rod connection point, the second rod connection point, and the calibration factor, a length of the connecting rod associated with a distance between the first rod connection point and the second rod connection point;
• and
• output, to a display, a visual representation of the length of the connecting rod.