title: [Posterior screw fixation for craniocervical junction instability].
abstract: BACKGROUND
  The craniocervical junction (C0-C2) is anatomically and biomechanically the most complex spinal region. It is frequently engaged by different pathologies of tumoral, traumatic or inflammatory origin, leading to spinal instability. We are presenting our experience with the posterior screw fixation for the treatment of the craniocervical junction instabilities.
  
  
  METHODS
  Six posterior screw fixation of the craniocervical junction with the DePuy cervical fixation system - Summit were made for a period of 9 months. In 5 cases the instability was caused by a traumatic injury and in 1 - by a malignancy. A C1- C2 fixation was made in 1 case, C2 - C3 in 2 cases, C0-C2-C3-C4 in 2 cases and N0 - N3 - N4 - N5 in 1 case.
  
  
  RESULTS
  No complications related to the surgical technique applied were observed. No dural, neural or vascular damages were provoked. In all cases the postoperative course was uneventful. The early clinical and radiologic follow-up data were satisfactory.
  
  
  CONCLUSIONS
  Our data suggest that the posterior screw fixation is a reliable and efficient option for surgical treatment of craniocervical instability.
authors.forename: K
authors.initials: K
authors.lastname: Uzunov
authors.forename: N
authors.initials: N
authors.lastname: Gabrovski
authors.forename: E
authors.initials: E
authors.lastname: Krŭstev
authors.forename: S
authors.initials: S
authors.lastname: Gabrovski
mesh_terms: D001268:Atlanto-Axial Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D001863:Bone Screws; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D008297:Male; D011859:Radiography; D013123:Spinal Fusion / Q000295:instrumentation / Q000379:methods; D016896:Treatment Outcome