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Related Concept Videos

Sutures of the Skull01:22

Sutures of the Skull

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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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Overview of the Skull01:08

Overview of the Skull

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The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain. It is subdivided into the facial bones and the brain case, or cranial vault. The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws.
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...
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Cranial Bones: Superior and Posterior View01:14

Cranial Bones: Superior and Posterior View

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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,...
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Cranial Bones: Lateral View01:27

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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...
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Classification of Bones01:18

Classification of Bones

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The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The...
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Related Experiment Video

Updated: Dec 23, 2025

Analysis of Craniomaxillofacial Malformations in Mice Using Three-dimensional Microcomputed Tomography
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Analysis of Craniomaxillofacial Malformations in Mice Using Three-dimensional Microcomputed Tomography

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Introducing a new method for classifying skull shape abnormalities related to craniosynostosis.

Otto D M Kronig1, Sophia A J Kronig2,3, Henri A Vrooman4,5

  • 1Department of Plastic and Reconstructive Surgery and Hand Surgery, Dutch Craniofacial Centre, Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands.

European Journal of Pediatrics
|April 19, 2020
PubMed
Summary

This study introduces a new, objective method using CT scans to classify skull deformities in craniosynostosis. The technique provides reproducible characteristic curves for each deformity type, aiding diagnosis.

Keywords:
Computer tomographyComputer-assisted diagnosisCraniosynostosisReliabilityShape analysis

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Three-Dimensional Shape Modeling and Analysis of Brain Structures
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Three-Dimensional Shape Modeling and Analysis of Brain Structures

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Area of Science:

  • Medical Imaging
  • Craniofacial Surgery
  • Pediatric Radiology

Background:

  • Craniosynostosis diagnosis is straightforward, but classification of specific skull deformities remains challenging.
  • Current classification techniques for craniosynostosis lack broad applicability.
  • Objective and reproducible methods are needed for precise craniosynostosis classification.

Purpose of the Study:

  • To present a novel, outline-based classification technique for common craniosynostosis skull deformities.
  • To establish an objective and reproducible methodology for analyzing craniosynostosis using CT scans.
  • To demonstrate the potential application of this method to 3D photogrammetry.

Main Methods:

  • Inclusion of 5 children per craniosynostosis group (scaphocephaly, brachycephaly, trigonocephaly, anterior plagiocephaly) and 5 controls.
  • Utilizing OsiriX, MeVisLab, and Matlab for landmark identification, base plane creation, outline segmentation, and graph plotting.
  • Measurement of repeatability and reproducibility with analysis of mean curves for each group.

Main Results:

  • Excellent intraclass (0.994-1.000) and interclass (0.989-1.000) correlation scores for landmark identification.
  • Characteristic forehead curve patterns identified: central peak for controls, scaphocephaly, trigonocephaly, brachycephaly; shifted peak for anterior plagiocephaly.
  • Distinctive curve features noted: high forehead peaks (controls, scaphocephaly, trigonocephaly), lowest troughs (scaphocephaly), and highest width/frontal peak ratio (brachycephaly).

Conclusions:

  • A preliminary, objective, and reproducible CT-based methodology for craniosynostosis analysis is presented.
  • The method generates characteristic curves specific to each craniosynostosis type, aiding classification.
  • This technique shows potential for application in 3D photogrammetry for craniofacial analysis.