Accessing 3D Location of Standing Pelvis: Relative Position of Sacral Plateau and Acetabular Cavities versus Pelvis

Figure 1

Illustrating the method for locating frames affixed to pelvis from biplanar radiography coupled with geometric modelling. A representative pelvis triangle is extracted from anatomical landmark images and then reconstructed in space from the zones of intersection between couples of projecting rays. A frame 𝑂_𝑝𝑋_𝑝𝑌_𝑝𝑍_𝑝 is affixed to the triangle representing the pelvic bone skeleton.