title: Traumatic atlantoaxial rotatory fixation in an adult patient.
abstract: Atlantoaxial rotational fixation (AARF) is a rare entity in adults, with only a few cases reported in the English literature and often associated with a traumatic mechanism. It is an underdiagnosed condition that must be taken into account in the initial assessment of all craniocervical trauma. Both diagnostic and therapeutic delay may be a potential cause of severe neurological damage or even death of the patient. The therapeutic management is controversial given the difficulty of achieving optimum stability and permanent reduction.
  
  
  
  A 28-year-old woman was involved in a traffic accident a week before coming to the emergency with rotation and irreducible cervical flexion from trauma and severe neck pain. CT and MRI column were performed and showed a cervical spinal AARF with transverse and alar ligaments intact and preserved atlantoaxial distance (Fielding I). The patient was treated by progressive cervical traction with 5 kg and manual reduction was completed in 24 h. Subsequently, an external immobilization was performed by cervical rigid collar for 16 weeks. The clinical course was good, with the patient regaining full mobility with cervical neck pain improvement.
  
  
  
  The purpose of this paper is to show a case of a young woman with a posttraumatic AARF successfully treated conservatively. This case delineates the difficulties in diagnosing this pathology, as well as the challenges encountered in its management.
authors.affiliation: Department of Neurosurgery, University Hospital La Princesa, C/Diego de León 62, 28006, Madrid, Spain. magpallero@gmail.com.
authors.forename: María A
authors.initials: MA
authors.lastname: García-Pallero
authors.affiliation: Department of Neurosurgery, University Hospital La Princesa, C/Diego de León 62, 28006, Madrid, Spain.
authors.forename: Cristina V
authors.initials: CV
authors.lastname: Torres
authors.affiliation: Department of Neurosurgery, University Hospital La Princesa, C/Diego de León 62, 28006, Madrid, Spain.
authors.forename: Juan
authors.initials: J
authors.lastname: Delgado-Fernández
authors.affiliation: Department of Neurosurgery, University Hospital La Princesa, C/Diego de León 62, 28006, Madrid, Spain.
authors.forename: R G
authors.initials: RG
authors.lastname: Sola
mesh_terms: D000063:Accidents, Traffic; D000328:Adult; D001268:Atlanto-Axial Joint / Q000000981:diagnostic imaging / Q000293:injuries*; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging / Q000293:injuries; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging* / Q000628:therapy; D008279:Magnetic Resonance Imaging; D019547:Neck Pain / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy; D016059:Range of Motion, Articular; D012399:Rotation; D014057:Tomography, X-Ray Computed; D014143:Traction / Q000379:methods
keywords: Atlantoaxial joint; C1–C2 fixation; Cervical spine; Rotatory dislocation; Traction