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Related Concept Videos

Aneurysm I: Introduction01:30

Aneurysm I: Introduction

An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
Spongy Bone01:09

Spongy Bone

All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
Bone Markings01:26

Bone Markings

Bones have various surface features that help form joints and attach to other soft tissues. Depending on the function, bone markings are categorized into articulating projections, processes for attachment, depressions, and openings.
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
Compact Bone01:27

Compact Bone

Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial infections,...
Blood and Nerve Supply to the Bones01:29

Blood and Nerve Supply to the Bones

Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...

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Related Experiment Video

Updated: Jun 13, 2026

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
05:44

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach

Published on: October 20, 2023

[Aneurysmal bone cyst.].

M Gajdos1, I Sulla, J Výrostko

  • 1Neurochirurgická klinika LF UPJS a FNsP, Kosice.

Acta Chirurgiae Orthopaedicae Et Traumatologiae Cechoslovaca
|May 18, 2010
PubMed
Summary

This report details a rare case of an aneurysmal bone cyst in a female patient

Area of Science:

  • Orthopedic Surgery
  • Oncology
  • Radiology

Context:

  • Aneurysmal bone cysts (ABCs) are rare, benign, expansile bone lesions.
  • Vertebral ABCs, particularly those involving the entire vertebral body, are exceptionally uncommon.
  • This case focuses on an ABC in the fifth lumbar vertebra (L5).

Purpose:

  • To report a rare case of an aneurysmal bone cyst affecting the entire body of the fifth lumbar vertebra.
  • To highlight the diagnostic challenges and therapeutic options for vertebral ABCs.
  • To contribute to the literature on the management of spinal bone tumors.

Summary:

  • A female patient presented with an aneurysmal bone cyst involving the complete body of the L5 vertebra.
  • Diagnostic imaging revealed the extent of the lesion.

Related Experiment Videos

Last Updated: Jun 13, 2026

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
05:44

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach

Published on: October 20, 2023

  • Treatment strategies were considered based on the unique localization and characteristics of the cyst.

    • Impact:

    • This case underscores the importance of considering rare diagnoses in spinal pathology.
    • It provides insights into the management of vertebral aneurysmal bone cysts.
    • Enhanced understanding of ABCs in this specific anatomical location can improve patient outcomes.