1. Fractures of the odontoid process of the axis;Anderson;J Bone Joint Surg Am,1974
2. Acute axis fractures. Analysis of management and outcome in 340 consecutive cases;Greene;Spine (Phila Pa 1976),1997
3. Fractures of the dens in adult patients;Hanssen;J Trauma,1987
4. Nonoperative management of Types II and III odontoid fractures: the Philadelphia collar versus the halo vest;Polin;Neurosurgery,1996
5. Non-rigid immobilisation of odontoid fractures;Müller;Eur Spine J,2003