Figure 1. The parameters determined by 3D CT, MRI, and Arthroscopic. a refer to the height and width of fossa intercondyloidea, b refer to the height of lateral intercondylar barren, c refer to the size of ACL femoral footprint, d refer to the size of ACL tibial footprint, e refer to the degree of ACL femoral footprint, f refer to the anteroposterior diameter of ACL tibial footprint, g refer to the length of ACL femoral footprint, h refer to the width of fossa intercondyloidea