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basilar_invagination_classification

Type I:

BI without Chiari malformation. Tip of odontoid tends to be above CL, McR, and WCCLin. Brainstem compression is due to odontoid process invagination. 85% can be reduced with traction.

Treatment: transoral surgery is recommended, usually accompanied by posterior fusion.

Type II:

BI+Chiari malformation. Odontoid tip tends to be above CL, but not McRor WCCL. Brainstem compression is due to reduced p-fossa volume. Only 15% can be reduced with traction. Foramen magnum decompression is appropriate.

basilar_invagination_classification.txt · Last modified: 2019/07/13 17:55 by administrador