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Related Concept Videos

Bone Disorders01:29

Bone 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...
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...
The Bone Matrix01:18

The Bone Matrix

Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in acid or...
Bone Remodeling and Repair01:31

Bone Remodeling and Repair

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...
Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
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.

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Related Experiment Video

Updated: Jun 18, 2026

Practical Considerations for the Design, Execution, and Interpretation of Studies Involving Whole-Bone Bending Tests of Rodent Bones
04:20

Practical Considerations for the Design, Execution, and Interpretation of Studies Involving Whole-Bone Bending Tests of Rodent Bones

Published on: September 1, 2023

Quantifying the material and structural determinants of bone strength.

Mary L Bouxsein1, Ego Seeman

  • 1Orthopaedic Surgery, Orthopedic Biomechanics Laboratory, Beth Israel Deaconess Medical Center and Department of Orthopaedic Surgery, Harvard Medical School, RN115, 330 Brookline Ave, Boston, MA 02215, USA. mbouxsei@bidmc.harvard.edu

Best Practice & Research. Clinical Rheumatology
|December 1, 2009
PubMed
Summary
This summary is machine-generated.

Bone strength, crucial for fracture resistance, is better assessed by advanced imaging techniques than bone mineral density alone. These new methods improve fracture risk prediction and understanding of skeletal fragility.

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Multimodal Approach to Assess Bone Regeneration and Scaffold Performance
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Fragility Assessment of Bovine Cortical Bone Using Scratch Tests
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Fragility Assessment of Bovine Cortical Bone Using Scratch Tests

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Related Experiment Videos

Last Updated: Jun 18, 2026

Practical Considerations for the Design, Execution, and Interpretation of Studies Involving Whole-Bone Bending Tests of Rodent Bones
04:20

Practical Considerations for the Design, Execution, and Interpretation of Studies Involving Whole-Bone Bending Tests of Rodent Bones

Published on: September 1, 2023

Multimodal Approach to Assess Bone Regeneration and Scaffold Performance
06:54

Multimodal Approach to Assess Bone Regeneration and Scaffold Performance

Published on: February 13, 2026

Fragility Assessment of Bovine Cortical Bone Using Scratch Tests
08:36

Fragility Assessment of Bovine Cortical Bone Using Scratch Tests

Published on: November 30, 2017

Area of Science:

  • Orthopedics
  • Biomedical Engineering
  • Radiology

Background:

  • Bone fracture resistance relies on bone quantity, distribution (cortical and trabecular), and material properties.
  • Low areal bone mineral density (aBMD) has limited sensitivity and specificity for predicting fractures.
  • Many fractures occur in individuals without osteoporosis by BMD testing, and most with osteoporosis do not fracture.

Purpose of the Study:

  • To explore advanced non-invasive imaging techniques for bone strength assessment.
  • To evaluate the potential of these techniques in improving fracture risk prediction.
  • To understand their role in skeletal fragility and clinical management.

Main Methods:

  • Utilizing three-dimensional (3D) assessments of bone density and geometry.
  • Analyzing bone microarchitecture.
  • Employing integrated measurements of bone strength, including finite element analysis (FEA).

Main Results:

  • New imaging techniques provide estimates of bone strength.
  • These methods offer insights beyond traditional aBMD measurements.
  • Initial observations indicate improved understanding of skeletal fragility pathophysiology.

Conclusions:

  • Advanced imaging techniques enhance sensitivity and specificity in fracture risk assessment.
  • These methods are likely to play a significant role in managing individuals at risk of fracture.
  • Further research will refine their clinical application for skeletal health.