Related Experiment Video
Updated: Jul 18, 2026
06:59
Trabecular Bone Microarchitecture Evaluation in an Osteoporosis Mouse Model
Published on: September 8, 2023
Vertebral osteoporosis and trabecular bone quality.
P McDonnell1, P E McHugh, D O'Mahoney
1National Centre for Biomedical Engineering Science, National University of Ireland, Galway, Ireland. p.mcdonnell1@nuigalway.ie
Annals of Biomedical Engineering
|December 16, 2006
Summary
Osteoporosis causes vertebral fractures by weakening bone quality, not just density. New diagnostic methods are needed to assess bone architecture, tissue properties, and microdamage for better fracture risk prediction.
Area of Science:
- Orthopedics
- Biomedical Engineering
- Gerontology
Background:
- Osteoporosis frequently leads to vertebral fractures under everyday loading conditions, affecting a significant portion of the population.
- Traditional diagnosis relies on bone mineral density (BMD), which inadequately captures the impact of altered bone quality on vertebral strength.
- Deterioration in vertebral trabecular architecture, tissue properties, and microdamage significantly influences fracture susceptibility.
Purpose of the Study:
- To review the impact of trabecular architecture, tissue properties, and microdamage on vertebral osteoporosis fracture risk.
- To compare morphological characteristics of normal and osteoporotic vertebral architectures.
- To identify limitations of current diagnostic methods and suggest future research directions.
Main Methods:
- Literature review focusing on the influence of bone quality parameters on vertebral strength.
- Comparative analysis of normal and osteoporotic vertebral trabecular morphology.
- Examination of the relationship between micro-architectural changes, tissue properties, microdamage, and fracture risk.
Main Results:
- Osteoporotic vertebral bone exhibits altered trabecular architecture, becoming more anisotropic with thinned transverse and thickened vertical trabeculae.
- This altered structure increases susceptibility to buckling and reduces resistance to off-axis loading.
- Changes in tissue mechanical properties and microdamage further compromise fracture resistance.
Conclusions:
- Current BMD measurements are insufficient for diagnosing vertebral osteoporosis due to their inability to account for bone quality.
- Trabecular architecture, tissue properties, and microdamage are critical determinants of vertebral fracture risk.
- Development of advanced diagnostic techniques incorporating these bone quality factors is essential for accurate osteoporosis assessment.
More Related Videos
07:52Mouse Lumbar Vertebra Uniaxial Compression Testing with Embedding of the Loading Surface
Published on: December 1, 2023
07:12Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model
Published on: September 28, 2017
Related Concept Videos
01:29Bone Disorders
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
01:09Spongy 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...
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...
01:27Compact 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...
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...
01:40Bone 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.
01:31Osteoclasts in Bone Remodeling
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
01:23Bone 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 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...