Endoscopic Endonasal Medial Condylectomy; ventral view of the skull base anatomy simulating an endonasal route. The occipital condyles form the antero-lateral aspect of the foramen magnum. As in previous figure, a silk suture has been placed running from the foramen lacerum to the foramen magnum. This imaginary line serves as a surgical reference to estimate the extent of a medial condylectomy that will provide the necessary lateral access while preserving the majority of the condyle and therefore the craniocervical stability. (Image courtesy of JC Fernandez-Miranda)