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. A compound conjunction between basiocciput, atlas (anterior arch), and dens of axis (odontoid process) was found incidentally during routine dissection of the head of an 83-year-old man. According to the patient's history, no neck disability had been recorded. A median saw-cut of the head-and-neck conjunction revealed that the basion was anteriorly reinforced by an osseous pillar 4 mm in length...