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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...
Space Trusses: Problem Solving01:29

Space Trusses: Problem Solving

A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
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.
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...

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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

Long range node-strut analysis of trabecular bone microarchitecture.

Tanya Schmah1, Norbert Marwan, Jesper Skovhus Thomsen

  • 1Department of Computer Science, University of Toronto, Toronto, Ontario M5S 3G4, Canada.

Medical Physics
|October 8, 2011
PubMed
Summary
This summary is machine-generated.

We developed a new method, mean node strength (NdStr), to quantify trabecular bone

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Published on: March 14, 2018

Area of Science:

  • Biomedical Engineering
  • Orthopedics
  • Materials Science

Background:

  • Trabecular bone exhibits a complex "latticelike" microarchitecture crucial for skeletal integrity.
  • Accurate quantification of this microarchitecture is essential for understanding bone health and disease.
  • Existing methods may not fully capture the long-range connectivity of trabecular bone.

Purpose of the Study:

  • To introduce and validate a novel morphometric measure, mean node strength (NdStr).
  • To describe and quantify the "latticelike" microarchitecture of trabecular bone using long range node-strut analysis.
  • To assess the correlation of NdStr with established bone microarchitecture parameters.

Main Methods:

  • Developed a long range node-strut analysis approach, distinguishing it from topological methods by emphasizing long-range connectivity.
  • Introduced 'node strength' as a continuous variable, averaged over a region of interest to yield mean node strength (NdStr).
  • Applied the method to 26 high-resolution peripheral quantitative computed tomography (pQCT) scans of human proximal tibiae.

Main Results:

  • Mean node strength (NdStr) showed a strong positive correlation (r=0.97) with trabecular volumetric bone mineral density (BMD) after exponential transformation.
  • NdStr successfully quantified the "latticelike" microarchitecture, differentiating bone structures with similar BMD but varying microarchitectural patterns.
  • A significant correlation (r=0.62) was found between NdStr and the conventional node-terminus ratio (Nd/Tm) derived from histomorphometry.

Conclusions:

  • The mean node strength (NdStr) measure provides a quantitative assessment of long-range trabecular bone connectivity.
  • This non-invasive method, utilizing pQCT images, offers an advantage over traditional bone biopsy procedures.
  • NdStr represents a valuable tool for evaluating trabecular bone microarchitecture in clinical and research settings.