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Related Concept Videos

Spongy Bone01:09

Spongy Bone

9.8K
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...
9.8K
Compact Bone01:27

Compact Bone

18.7K
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...
18.7K

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Related Experiment Video

Updated: Mar 19, 2026

Outer-Boundary Assisted Segmentation and Quantification of Trabecular Bones by an Imagej Plugin
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A NEW ALGORITHM FOR TRABECULAR BONE THICKNESS COMPUTATION AT LOW RESOLUTION ACHIEVED UNDER IN VIVO CONDITION.

Yinxiao Liu1, Dakai Jin1, Punam K Saha2

  • 1Department of ECE, University of Iowa, Iowa City, IA, 52242.

Proceedings. IEEE International Symposium on Biomedical Imaging
|June 23, 2016
PubMed
Summary

A new algorithm accurately measures trabecular bone thickness and marrow spacing, crucial for diagnosing osteoporosis and predicting fracture risk. This method enhances understanding of bone strength beyond bone mineral density.

Keywords:
Trabecular bone thicknessbone biomechanicsmarrow spacingmulti-row detector CTstar line tracing

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Area of Science:

  • Biomedical Engineering
  • Radiology
  • Orthopedics

Background:

  • Osteoporosis significantly increases fracture risk, leading to severe health consequences and high costs.
  • Current osteoporosis diagnosis relies on bone mineral density (BMD), but trabecular bone (TB) micro-architecture is increasingly recognized as vital for bone strength.
  • Precise measurement of TB thickness and marrow spacing is essential for early osteoporosis detection and monitoring treatment efficacy.

Purpose of the Study:

  • To develop and validate a novel, robust algorithm for quantifying trabecular bone thickness and marrow spacing.
  • To enable accurate in vivo measurements of trabecular bone structure using low-resolution imaging.

Main Methods:

  • A new algorithm employing a star-line tracing technique was developed.
  • The method effectively addresses partial voluming effects inherent in in vivo imaging.
  • The algorithm was validated using multi-row detector computed tomography (MD-CT) scans of cadaveric ankle specimens.

Main Results:

  • The algorithm demonstrated high robustness in repeated scans (Intraclass Correlation Coefficient > 0.98).
  • Computed TB thickness and marrow spacing showed a strong correlation with experimental mechanical strength measures (R² values of 0.85 and 0.87).

Conclusions:

  • The developed algorithm provides a robust and accurate method for measuring trabecular bone thickness and marrow spacing in vivo.
  • This technique has significant potential for improving osteoporosis diagnosis and fracture risk assessment.