RESUMEN
Objective To study the anatomical characteristics of sectional clivus region and to provide anatomical data for the operation of the clivus regoin.Methods Continuous thin sections(transverse position and coronal position)from two head specimens were performed with freezing milling technique.Observed the anatomical relationship and anatomical characteristics of the clivus region,and finished the three dimensional reconstruction based on the data of sections.Results Totally obtained 320 transverse sections and 232 coronary sections.The related structures were described in 4 typical sections,and three dimensional reconstruction of the clivus region were produced.Conclusion Combinationof section anatomy and three dimensional reconstruction can stereoscopically display the anatomical characters of the clivus re -gion.The three dimensional models could continuously and dynamically display the anatomic structures.