1. A medical image display apparatus comprising: an image processing unit configured to read in a lower-limb image that is a medical image obtained by performing computed tomography on lower limbs of a user and includes at least one of a bone shape and a blood vessel shape; and a display unit configured to divide the medical image and display the divided medical images on a screen region, wherein the screen region on which the lower-limb image is displayed is divided into a first region whose length is relatively greater than a width thereof and on which the entire lower-limb image and a division boundary line dividing the lower-limb image in a widthwise direction, and a second region adjacent to the first region, the display unit enlarges and displays a part of the lower-limb image including the division boundary line on the second region, and the medical image display apparatus is configured to adjust a position of the division boundary line on the first region by movement of an adjusting bar, to overlap a region outside the division boundary line to enlarge and display the lower-limb image including the outside region, to rotate the lower-limb image on the first or second region according to a rotation instruction, and to capture a two-dimensional image for the lower-limb image divided by the division boundary line while rotating based on a preset angle.