Odontoid process and clival regeneration with Chiari malformation worsening after transoral decompression: an unexpected and previously unreported cause of “accordion phenomenon-

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• 作者：Massimiliano Visocchi ; Gianluca Trevisi…
• 关键词：Basilar invagination ; Bone regrowth ; Chiari malformation ; Clivus ; Odontoid process ; Transoral odontoidectomy
• 刊名：European Spine Journal
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：24
• 期：4-supp
• 页码：564-568
• 全文大小：715 KB
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• 作者单位：Massimiliano Visocchi (1)
  Gianluca Trevisi (1)
  Domenico Gerardo Iacopino (2)
  Gianpiero Tamburrini (1)
  Massimo Caldarelli (1)
  Giuseppe M. V. Barbagallo (3)
  
  1. Institute of Neurosurgery, Policlinico Gemelli, Catholic University School of Medicine, Largo A. Gemelli 8, 00168, Rome, Italy
  2. Institute of Neurosurgery, Policlinico Giaccone, University of Palermo, Palermo, Italy
  3. Division of Neurosurgery, Department of Neurosciences, Policlinico “G. Rodolico-University Hospital, Catania, Italy
  
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Surgical Orthopedics
  Neurosurgery
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-0932

文摘

Purpose Transoral odontoidectomy followed by occipito-cervical fixation is a widely used approach to relieve ventral compressions at the craniovertebral junction (CVJ). Despite the large amount of literature on this approach and its complications, no previous reports of odontoid process and clival regeneration following transoral odontoidectomy are present in the English literature. Methods We report the case of odontoid process and clival regeneration following transoral odontoidectomy. Results A 7-year-old boy presented with symptoms of brainstem and upper cervical spinal cord compression due to a complex malformation at the CVJ including a basilar invagination with Chiari malformation. A successful transoral microsurgical endoscopic-assisted odontoidectomy extended to the clivus was performed along with occipito cervical instrumentation and fusion. Clinical and radiological resolution of the CVJ compression was evident up to 2?years post-op, when the child had a relapse of some of the presenting symptoms and the follow-up CT and MRI scans showed a quite complete regrowth of the odontoid process, clival partial regeneration and recurrence of preoperative Chiari malformation. Conclusions Besides the need of an accurate complete resection of the periosteum, which apparently was incompletely performed in our case, our experience suggests the need of resection of the odontoid down to the dentocentral synchondrosis and an accurate lateral removal of the bone surrounding the anterior tubercle of the Clivus is advised when an anterior CVJ decompression is required in children presenting a still evident synchondrosis at neuroradiological investigation.