Paragraph Number

130

Generation of the contours of bone engagement surface of the preliminary guide model 438 may be performed in various CAD programs. In some embodiments, the shapes of the corresponding surface dorsal surface of a calcaneus 222 may be obtained directly from the bone model 404, anatomic data 412, CAD models and/or CT scan data, and simply copied onto the preliminary guide model 438. Various operations may be used to copy surfaces from one object to another. Additionally or alternatively, various Boolean operations, such as a Boolean subtraction operation, may be used to remove material from a model for the body of the preliminary guide model 438 with a shape that matches the dorsal surface of a calcaneus 222.

Added by DJM Jan 2024