In a series of 32 fractures of odontoid process of axis, 16 cases were fresh and 16 cases were old fractures. Almost of the fresh cases were treated conservative methed and obtained bony union and relieved from cord symptomes.
Almost of the old cases presented atlant-axial instability and 10 cases were suffered from delayed myelopathy. For the preventing delayed myelopathy and treatment of delayed myelopathy due to non-union of fractures of the odonteid process, fusion of the first cervical vertebra to the 2nd is adequate.
