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Related Concept Videos

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,...
Glaucoma: Overview01:25

Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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...
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...
Articulations of the Vertebral Column01:28

Articulations of the Vertebral Column

In addition to being held together by the intervertebral discs, adjacent vertebrae also articulate with each other at synovial joints formed between the superior and inferior articular processes called zygapophysial joints (facet joints). These are plane joints that provide for only limited motions between the vertebrae. The orientation of the articular processes at these joints varies in different regions of the vertebral column and serves to determine the types of motions available in each...
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...

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Related Experiment Video

Updated: Jun 12, 2026

Three-Dimensional Reconstruction of Orbital Fractures
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Three-Dimensional Reconstruction of Orbital Fractures

Published on: May 16, 2025

Occipital osteodiastasis.

Sudhir Dixit1, Ashish Jain, Suhas Datar

  • 1Neonatology Division, Department of Pediatrics, Hindu Rao Hospital, Delhi, India.

Indian Pediatrics
|June 4, 2010
PubMed
Summary

Occipital osteodiastasis (OOD) is a birth injury from breech delivery, causing skull bone separation and brain bleeding. This case highlights OOD in a neonate, emphasizing its association with traumatic posterior fossa subdural hemorrhage.

Area of Science:

  • Neonatal medicine
  • Pediatric radiology
  • Traumatic neurosurgery

Background:

  • Occipital osteodiastasis (OOD) is a significant birth trauma.
  • It commonly occurs in neonates delivered via breech, particularly during the 'after coming head' maneuver.
  • OOD involves the separation of the occipital bone's cartilaginous joint, leading to potential intracranial hemorrhage.

Purpose of the Study:

  • To report a case of occipital osteodiastasis (OOD) in a term neonate.
  • To illustrate the diagnostic findings of OOD using radiographic and CT imaging.
  • To highlight the association between OOD and posterior fossa subdural hemorrhage.

Main Methods:

  • Case report of a term female infant.
  • Diagnostic imaging included X-ray of the skull and non-contrast computed tomography (NCCT) of the brain.

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  • Clinical presentation and delivery details were recorded.

    • Main Results:

    • X-ray confirmed separation of the squamous and lateral portions of the occipital bone.
    • NCCT brain revealed a large extra-axial hemorrhage in the right temporo-parieto-occipital region.
    • The neonate was born via breech extraction, consistent with OOD etiology.

    Conclusions:

    • Occipital osteodiastasis (OOD) is a critical traumatic lesion in neonates following breech delivery.
    • Radiographic and CT findings are crucial for diagnosing OOD and associated intracranial hemorrhages.
    • Early recognition and management are vital for neonates presenting with OOD.