The cranial base is a complex boundary between intracranial and extrac
ranial anatomic structures. Adequate reconstruction of the basicranium
depends on the location, size, and nature of the defect. A reconstruc
tive ladder can be built on a few basic principles: coverage of vital
structures, separation of the intra- and extradural spaces, procedural
simplicity, and aesthetics. Individual consideration should be given
to reconstruction of bone, soft tissue, dura, and cerebrospinal fluid
spaces.