• G Riouallon and H Pascal-Moussellard.
• Service de chirurgie orthopédique et traumatologie, hôpital Pitié-Salpétrière, Assistance publique-Hôpitaux de Paris, 47-83, boulevard de l'Hôpital, 75013, Paris, France; Faculté de Médecine Pierre et Marie-Curie, Site La Pitié, 91 et 105, boulevard de l'Hôpital, 75634 Paris, France. Electronic address: g.riouallon@gmail.com.
• Orthop Traumatol Sur. 2014 May 1;100(3):341-5.

AbstractA case of traumatic posterolateral C1-C2 dislocation associated with odontoid fracture is reported. This is a rare case of traumatic posterolateral C1-C2 dislocation associated with odontoid fracture. Its management is discussed. A traumatic dislocation of atlanto-axial joint associated with an odontoid fracture remains a rare injury. No case of posterior dislocation has been reported so far in the literature with this type of management. The case is of a 25 year-old-man with a primary atlanto-axial posterolateral dislocation associated with a type II displaced odontoid fracture without any neurological complication. The patient underwent gentle traction during 24 hours with a halo frame. An incomplete reduction was achieved. Two days later, a complete reduction was obtained thanks to a preoperative manual traction maintained by a Mayfield (R) modified skull clamp. Anterior C1-C2 fixation was performed according to Vaccaro's technique. The patient wore a cervical collar and underwent physiotherapy during three months. To our best knowledge, this case represents the first traumatic atlanto-axial dislocation associated with an odontoid fracture which was treated through retropaharyngeal approach. This had been rendered possible thanks to the final reduction maneuver in extension.Copyright © 2014. Published by Elsevier Masson SAS.

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