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Sutures of the Skull

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...

Overview of the Skull

Overview of the Skull

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...

Cranial Bones: Superior and Posterior View

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 Bones: Lateral View

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...

Cohesins

Cohesins

Cohesin protein complexes are a molecular glue that holds two sister chromatids together. They play an important role both in mitosis and meiosis. In mitosis, all cohesin complexes present on the chromosomes are removed before the start of the anaphase stage.
Cohesin complexes in Meiotic Division
Meiosis involves two distinct rounds of chromosomal segregation and cell divisions— Meiosis I followed by Meiosis II – producing four daughter cells. Meiosis I includes the separation of...

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Related Experiment Video

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Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans

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Syndromic Craniosynostosis: A Comprehensive Review.

Kyriaki Katouni¹, Aggelos Nikolaou¹, Theodoros Mariolis¹

¹Department of Anatomy, National and Kapodistrian University of Athens, Athens, GRC.

|January 15, 2024

Summary

Syndromic craniosynostosis involves premature skull suture fusion, causing deformities and associated health issues. Understanding genetic mutations like FGFR and TWIST aids diagnosis and treatment development.

Keywords:

apert syndrome crouzon syndrome muenke syndrome pfeiffer syndrome saethre–chotzen syndrome

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Area of Science:

Genetics
Pediatric Surgery
Developmental Biology

Background:

Craniosynostosis is a condition where fetal skull sutures fuse prematurely, restricting cranial growth.
Syndromic craniosynostosis presents with cranial deformities and additional systemic abnormalities affecting respiratory, neurological, and other systems.
Common syndromes include Apert, Crouzon, Pfeiffer, Muenke, and Saethre-Chotzen, each with unique genetic underpinnings.

Purpose of the Study:

To provide a comprehensive overview of syndromic craniosynostosis.
To detail the genetic mutations associated with various syndromes.
To discuss current and future surgical treatment strategies.

Main Methods:

Literature review of genetic mutations and clinical manifestations.
Analysis of common syndromic craniosynostosis types.
Overview of surgical interventions and research advancements.

Main Results:

Specific genetic mutations (FGFR, TWIST, EFNB1) are linked to distinct syndromic craniosynostosis.
Surgical correction is a primary treatment for cranial deformities.
Advances in surgical techniques are improving patient outcomes.

Conclusions:

Genetic knowledge is crucial for diagnosing and developing targeted therapies for syndromic craniosynostosis.
Personalized surgical approaches are needed to address complex patient symptoms.
Continued research is essential for improving the quality of life for affected individuals.