e-CASES: Normal atlantodental distance (C1-C2)
Distance between the anterior surface of the dens and the posterior surface of the tubercle of C1 (predentate space, predental space, atlantodental distance):
Normal ≤ 3 mm in adults
Normal ≤ 5 mm in children
Atlantoaxial instability: increase in the predentate space of greater then 3 mm in adults and 5 mm in children
Anterior atlantoaxial dislocations may be associated with a fracture of the dens (~50% at autopsy. This injury is unstable. Associated fractures of the skull and/or facial bones are common.
Almost all atlantoaxial dislocations involve forward movement of C1 on C2; posterior dislocation is extremely rare.
Chronic atlantoaxial dislocations may be asymptomatic, and occure in different diseases (non traumatic): Down syndrome, Grisel syndrome, Rheumatoid arthritis, Osteogenesis imperfecta, Neurofibromatosis, Morquio syndrome, Psoriasis, Lupus.
Ziehm Vision RFD Hybrid Edition: Mobility and flexibility – the difference in an emergency
Agfa HealthCare Special Report Dose Management: because life is precious.
Pourquoi avoir une gestion en temps en réel de la dose d'irradiation des patients ?
BRACCO IMAGING FRANCE
Olea Medical® case report on early & late MR diffusion follow-up of a stroke using CT perfusion.
Olea Medical® literature meta-analysis on CTP thresholds in acute stroke