Comparative Anatomical Study Of The Exposure Extent And Damage Degree To The Pineal Region Through Krause Approach And Poppen Approach

Objective:To compare the exposure extent and damage degree to the pineal region between Krause approach (through infratentorial supracerebellar approach) and Poppen approach (throughoccipital transtentorium approach).Methods:Six adult Chinese cadaver heads were observed, and the Krause and Poppen approaches wewe mimicked in each head. After the operative steps of each approach were completed, the exposure areas were calculated by Horgan method and the exposure extent was assessed between the two surgical approaches according to Ammirati standard. The damage severity from the two approaches was also evaluated and compared.Results:The score of the exposure extent in Krause and Poppen approaches were 2.0 in each and the exposure area were 1298.07±64.67 mm2,1041.10±50.23 mm2 respectively. The scores for damage severity in Krause and Poppen approaches were 4.5±0.6 and 6.3±0.7 respectively. T tests showed significant differences (P<0.01) between two groups.Conclusion:Both the Krause and Poppen approaches can sufficiently expose the pineal region, while the Krause approach can result in a better exposure effects and smaller damage.