@article {Papachristou:2022:2637-8329:35,
title = "Complex Chiari Malformation: What the Neurosurgeon Needs to Know",
journal = "Neurographics",
parent_itemid = "infobike://asnr/ng",
publishercode ="asnr",
year = "2022",
volume = "12",
number = "1",
publication date ="2022-01-01T00:00:00",
pages = "35-42",
itemtype = "ARTICLE",
issn = "2637-8329",
eissn = "2637-8329",
url = "https://asnr.publisher.ingentaconnect.com/content/asnr/ng/2022/00000012/00000001/art00005",
doi = "doi:10.3174/ng.2100050",
keyword = "CCM = complex Chiari malformation, VCMD = ventral cervicomedullary dura, CM1 = Chiari malformation type 1, BI = basilar invagination, pB-C2 = perpendicular basion-C2 line (Grabb line), CVJ = craniovertebral junction, CXA = clivo-axial angle, AAI = atlantoaxial instability, CDP = clivodental pivot, CCI = craniocervical instability, BAI = basion-axis interval, VBSC = ventral brainstem compression, OCF = occipitocervical fusion, SOD = suboccipital decompression, ADI = atlantodental interval",
author = "Papachristou, M.D. and Ward, R.E. and Agarwal, V. and Branstetter, B.F.",
abstract = "Chiari malformation type 1 is a frequently encountered but incompletely understood morphologic variant that may present with headache and lower cranial nerve symptoms. The main surgical treatment for Chiari malformation type 1 is suboccipital decompression. Further research has identified
a subset of patients with Chiari malformation type 1 with radiographic findings that predispose to suboptimal outcomes from suboccipital decompression alone. This disease process has come to be referred to as complex Chiari malformation. Here, we discuss imaging findings of complex Chiari
malformation, identify craniovertebral metrics used to stratify patients, and propose a reporting structure to assist our neurosurgical colleagues in the selection of appropriate treatment.Learning Objective: To understand imaging findings and radiographic metrics associated with Complex
Chiari malformation and their implication on surgical management",
}