1. A method for displaying relative movement between vertebrae, comprising: acquiring at least two images of adjacent vertebrae, wherein the at least two images are acquired from a substantially similar acquisition position and illustrate the vertebrae in two different positions; displaying a first image to a user on a screen; displaying a second image to the user overlaid onto the first image; translating, via user input the first or second image to align a stationary feature present in both the first and second images; and alternately displaying the translated first and second images to display relative movement between the stationary feature and adjacent features.