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Department of Neurosurgery, Faculty of Medicine, Trakya University Edirne, Turkey We designed a microneurosurgical training model for residents in neurosurgery to practice the basic steps of the posterior fossa approach. The training material consisted of a fresh cadaveric sheep cranium. A four-step approach was designed to open the cisterna magna, access the fourth ventricle, identify the Sylvian aqueduct, and perform microdissection of the lower cranial nerves. We conclude that the use of the cadaveric sheep cranium represents a useful method to accustom residents of neurosurgery as it simulates well the steps of standard microneurosurgery for posterior fossa approach in infants and children. Keywords : Sheep cranium, surgical training, microneurosurgery, posterior fossa