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Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Complex Chiari Malformations: Diagnosis, Evaluation, and Treatment.

Vijay M Ravindra1, Douglas L Brockmeyer2

  • 1Department of Neurosurgery, Naval Medical Readiness Training Command, San Diego, CA, USA; Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT, USA; Department of Neurosurgery, University of California San Diego, San Diego, CA, USA.

Neurosurgery Clinics of North America
|November 24, 2022
PubMed
Summary

Complex Chiari malformation (CCM) involves craniocervical kyphosis and brainstem compression. CCM patients may need advanced surgical fusion or resection for better outcomes.

Keywords:
Basilar invaginationChiari malformationsClivoaxial angle (CXA)Complex Chiari malformation (CCM)Condylar-C2 sagittal vertical alignment (C-C2SVA)Retroflexed odontoid

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Area of Science:

  • Neurosurgery
  • Orthopedic Surgery
  • Radiology

Background:

  • Complex Chiari malformation (CCM) is a specific subtype of Chiari malformation.
  • CCM is characterized by craniocervical kyphosis and secondary brainstem compression.
  • Standard decompressive surgery may be less effective for CCM patients.

Purpose of the Study:

  • To review the diagnosis and management of CCM.
  • To discuss treatment strategies for CCM.
  • To identify future research directions for CCM.

Main Methods:

  • Literature review of CCM diagnosis and treatment.
  • Analysis of clinical and radiographic findings in CCM.
  • Discussion of surgical options including craniocervical fusion and odontoid resection.

Main Results:

  • CCM patients present unique challenges compared to standard Chiari malformations.
  • Standard Chiari decompression may lead to higher rates of surgical failure in CCM.
  • Craniocervical fusion and/or odontoid resection are potential surgical interventions for CCM.

Conclusions:

  • CCM requires specialized diagnostic and management approaches.
  • Surgical treatment for CCM may necessitate advanced techniques beyond standard decompression.
  • Further research is needed to optimize CCM treatment and outcomes.