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Related Concept Videos

Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
Cranial Bones: Superior and Posterior View01:14

Cranial Bones: Superior and Posterior View

The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
Cranial and Spinal Meninges01:19

Cranial and Spinal Meninges

The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
Cranial Meninges
These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
Sutures of the Skull01:22

Sutures of the Skull

The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...

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Related Experiment Video

Updated: May 11, 2026

Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
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Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model

Published on: November 4, 2025

Angular craniometry in craniocervical junction malformation.

Ricardo Vieira Botelho1, Edson Dener Zandonadi Ferreira

  • 1Post-graduation Program in Health Sciences-IAMSPE-São Paulo, São Paulo, Brazil, bitbot@uol.com.br.

Neurosurgical Review
|May 4, 2013
PubMed
Summary
This summary is machine-generated.

Angular craniometry reveals distinct differences in craniocervical junction malformations. Basilar invagination shows significant angular variations compared to Chiari malformation and controls.

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Area of Science:

  • Neurosurgery
  • Orthopedics
  • Radiology

Background:

  • Craniometric linear dimensions of the posterior fossa are well-studied.
  • Angular craniometry of the craniocervical junction is less understood.
  • Angular differences may distinguish types of craniocervical junction malformations.

Purpose of the Study:

  • Evaluate craniometric angles in craniocervical junction malformations.
  • Compare angular measurements with normal subjects.
  • Elucidate angular differences among malformation types and correlate craniocervical and cervical angles.

Main Methods:

  • Studied primary cranial angles (basal, Boogard's).
  • Assessed secondary craniocervical angles (clivus canal, cervical spine lordosis).
  • Compared angular measurements between basilar invagination, Chiari malformation, and control groups.

Main Results:

  • Basilar invagination patients had wider basal angles, sharper clivus canal angles, larger Boogard's angles, and greater cervical lordosis than Chiari and control groups.
  • Chiari malformation group showed no significant differences compared to controls.
  • Platybasia, present only in basilar invagination, correlated with acute clivus canal angles and greater cervical lordosis.

Conclusions:

  • Angular craniometry effectively differentiates basilar invagination from Chiari malformation and controls.
  • Basilar invagination is characterized by specific angular craniometric variations.
  • Chiari malformation does not present significant angular differences compared to normal controls.