| Basilar invagination. | |
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MedLine Citation:
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PMID: 20173526 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Basilar invagination is a developmental anomaly of the craniovertebral junction in which the odontoid abnormally prolapses into the foramen magnum. It is often associated with other osseous anomalies of the craniovertebral junction, including atlanto-occipital assimilation, incomplete ring of C1, and hypoplasia of the basiocciput, occipital condyles, and atlas. Basilar invagination is also associated with neural axis abnormalities, including Chiari malformation, syringomyelia, syringobulbia, and hydrocephalus. Patients frequently present with neurologic symptoms and deficits and warrant surgical treatment to prevent progression. OBJECTIVE: To review the management of basilar invagination. METHODS: The literature was reviewed in reference to the evaluation and management of basilar invagination, with particular emphasis on the surgical treatment. RESULTS: Reducible basilar invagination may be treated with posterior decompression and stabilization. Ventral decompression may be necessary for basilar invagination with neural compression that is not reducible with axial cervical traction. Posterior cervical stabilization is necessary after ventral decompression. Modern rod and screw systems combined with autogenous bone graft enable correction of deformity, immediate stabilization, and high fusion rates. CONCLUSION: Basilar invagination is a developmental anomaly and commonly presents with neurologic findings. Treatment is typically surgical and involves anterior decompression followed by posterior stabilization for irreducible invagination and posterior decompression and stabilization for reducible invagination. |
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Authors:
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Justin S Smith; Christopher I Shaffrey; Mark F Abel; Arnold H Menezes |
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Publication Detail:
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Type: Case Reports; Journal Article; Review |
Journal Detail:
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Title: Neurosurgery Volume: 66 ISSN: 1524-4040 ISO Abbreviation: Neurosurgery Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-02-22 Completed Date: 2010-06-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7802914 Medline TA: Neurosurgery Country: United States |
Other Details:
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Languages: eng Pagination: 39-47 Citation Subset: IM |
Affiliation:
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Department of Neurosurgery, University of Virginia, Charlottesville, Virginia 22908, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Arnold-Chiari Malformation / pathology, physiopathology, surgery Bone Transplantation / methods, trends Brain Stem / abnormalities, pathology, physiopathology Child, Preschool Craniofacial Abnormalities / pathology, physiopathology, surgery* Decompression, Surgical / instrumentation, methods* Female Humans Internal Fixators / standards, trends Male Occipital Bone / abnormalities*, pathology, surgery* Odontoid Process / abnormalities*, pathology, surgery* Spinal Fusion / instrumentation, methods* Syringomyelia / pathology, physiopathology, surgery |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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