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Related Concept Videos

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...
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...
Bone as Supporting Connective Tissue01:23

Bone as Supporting Connective Tissue

Bone tissue forms the internal skeleton of vertebrate animals, providing structure to the body.
Bone Matrix
Bone, or osseous tissue, is a connective tissue that has a large amount of two different types of matrix material. The organic matrix is similar to the matrix material found in other connective tissues, including some amount of collagen and elastic fibers. This gives strength and flexibility to the tissue. The inorganic matrix consists of mineral salts— mostly calcium salts— that give the...
Bone Structure01:55

Bone Structure

Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
Gross Anatomy of Bone01:17

Gross Anatomy of Bone

The two main features of a long bone are the diaphysis and the epiphysis.
The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The walls of the diaphysis are composed of dense and hard compact bone made of numerous osteons — the functional unit of the compact bone. The hollow region in the diaphysis is called the medullary cavity, which harbors the bone marrow. In infants and children, this marrow cavity is filled with red marrow, whereas in adults, it...
Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.

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Related Experiment Video

Updated: Jun 27, 2026

Trabecular Bone Microarchitecture Evaluation in an Osteoporosis Mouse Model
06:59

Trabecular Bone Microarchitecture Evaluation in an Osteoporosis Mouse Model

Published on: September 8, 2023

Trabecular bone microarchitecture: a review.

D Chappard1, M-F Baslé, E Legrand

  • 1Inserm, U922, LHEA, Faculty of Medicine, 1, rue Haute-de-Reculée, 49045 Angers cedex, France. daniel.chappard@univ-angers.fr

Morphologie : Bulletin De L'Association Des Anatomistes
|November 21, 2008
PubMed
Summary
This summary is machine-generated.

Bone microarchitecture, crucial for skeletal health, is influenced by mechanical forces. This review covers methods for evaluating bone structure in diseases like osteoporosis.

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Last Updated: Jun 27, 2026

Trabecular Bone Microarchitecture Evaluation in an Osteoporosis Mouse Model
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Multimodal Approach to Assess Bone Regeneration and Scaffold Performance

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Area of Science:

  • Orthopedics and Bone Biology
  • Biomechanical Engineering
  • Medical Imaging

Background:

  • Bone mass is maintained through modeling and remodeling, with trabecular bone structure influenced by mechanical stress (Wolff's law).
  • Trabecular microarchitecture, characterized by plates and rods, exhibits anisotropy aligned with stress lines.
  • Assessing and monitoring bone microarchitecture changes in diseases like osteoporosis remains a clinical challenge.

Purpose of the Study:

  • To review the current understanding of bone microarchitecture.
  • To explore the role of microarchitecture in bone diseases, particularly osteoporosis.
  • To describe various 2D and 3D histological evaluation methods for bone microarchitecture.

Main Methods:

  • Bone histomorphometry with advanced algorithms for 2D trabecular analysis (thickness, connectivity).
  • Non-destructive 3D imaging techniques including X-ray microtomography (microCT), micro-MRI, and synchrotron imaging.
  • Integration of multiple independent techniques for comprehensive microarchitecture parameter assessment.

Main Results:

  • Histomorphometry provides detailed 2D insights into trabecular characteristics.
  • 3D imaging techniques offer non-destructive evaluation of bone microarchitecture.
  • Studies increasingly emphasize the need for multi-technique approaches to fully characterize microarchitecture.

Conclusions:

  • Bone microarchitecture is a key determinant of bone strength and is affected by mechanical loading.
  • Accurate assessment of microarchitecture is vital for understanding and managing bone diseases.
  • Advancements in imaging and analytical techniques are improving the evaluation of bone structure in 2D and 3D.