Retrospective Study
Copyright ©The Author(s) 2016.
World J Clin Cases. Aug 16, 2016; 4(8): 202-206
Published online Aug 16, 2016. doi: 10.12998/wjcc.v4.i8.202
Figure 2
Figure 2 Position of the entrance tunnel from lateral X-ray compared to the Blumensaat line and the posterior cortex in that area.