title: [Spontaneous vertebral pseudarthrosis in ankylosing spondylitis. Apropos of 3 cases].
abstract: OBJECTIVE
  The authors describe the surgical treatment of three cases of vertebral pseudarthrosis in two patients suffering from rheumatoid spondylitis for an average of 20 years.
  
  
  METHODS
  Two pseudarthrosis involved the thoracic level (T9-T10 and T10-T11), after an insignificant trauma. In the other case, the lesion was a secondary localization (L5-S1) arising spontaneously two years after the treatment of a T10-T11 lesion. Initial conservative treatment was unsuccessful in all three cases. Anterior surgery was performed in all three cases. In two out of the three, posterior surgery was associated with the anterior approach.
  
  
  RESULTS
  After surgery, the three lesions healed.
  
  
  CONCLUSIONS
  Extensive discovertebral lesions during the course of rheumatoid spondylitis are well known. The authors discuss the pathophysiological mechanisms, the diagnostic difficulties of such lesions in patients referred for chronic spinal pain, and the choice of treatment.
  
  
  CONCLUSIONS
  Surgical treatment was considered necessary in view of the mechanical solicitations of the mobile segment. A double approach, both anterior and posterior, gave good results and is advocated by the authors.
authors.affiliation: Unité de Pathologie Rachidienne, CHU Pellegrin, Bordeaux.
authors.forename: H
authors.initials: H
authors.lastname: Moussellard
authors.forename: V
authors.initials: V
authors.lastname: Pointillart
authors.forename: P
authors.initials: P
authors.lastname: Mangione
authors.forename: T
authors.initials: T
authors.lastname: Shauwerbecke
authors.forename: J M
authors.initials: JM
authors.lastname: Vital
authors.forename: J
authors.initials: J
authors.lastname: Sénégas
mesh_terms: D000328:Adult; D005500:Follow-Up Studies; D006801:Humans; D016268:Internal Fixators; D008159:Lumbar Vertebrae; D008297:Male; D011542:Pseudarthrosis / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D011859:Radiography; D013123:Spinal Fusion; D013167:Spondylitis, Ankylosing / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D013904:Thoracic Vertebrae