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Bone Remodeling

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: Jul 15, 2026

Multimodal Approach to Assess Bone Regeneration and Scaffold Performance

Multimodal Approach to Assess Bone Regeneration and Scaffold Performance

Published on: February 13, 2026

Digital measurements: a different approach to evaluate bone formation. A technical report.

M Gordjestani¹, L Dermaut, L De Ridder

¹Department of Orthodontics, University of Ghent, Belgium. madjid.gordjestani@skynet.be

Cells, Tissues, Organs

|April 6, 2007

Summary

A new digital method quantifies bone formation from histological images. Osteopontin-coated hydroxyapatite (OPN-HA) showed enhanced bone formation at defect margins compared to standard hydroxyapatite (HA).

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Last Updated: Jul 15, 2026

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Published on: December 9, 2022

Area of Science:

Biomaterials Science
Surgical Innovation
Digital Pathology

Background:

Assessing bone regeneration is crucial for orthopedic and dental applications.
Histological analysis is a standard method for evaluating bone formation.
Digital tools can potentially improve the accuracy and efficiency of histological analysis.

Purpose of the Study:

To introduce and validate a digital measurement technique for quantifying bone formation in histological images.
To compare the efficacy of osteopontin-coated hydroxyapatite (OPN-HA) with non-coated hydroxyapatite (HA) in promoting bone healing.
To assess bone regeneration in rabbit parietal defects over time.

Main Methods:

Parietal bone defects were created in 30 rabbits and divided into experimental (OPN-HA and HA implants) and control groups.
Histological sections were obtained at various time points (1-30 weeks) and digitally scanned.
Adobe Photoshop 7 software was utilized to quantify newly formed bone surfaces, establishing a digital measurement technique.

Main Results:

The proposed digital measurement technique demonstrated reliability and reproducibility for quantifying bone formation.
No significant difference in overall bone formation was observed between OPN-HA and non-coated HA treated defects.
A significant increase in bone formation was detected specifically at the margins of defects treated with OPN-HA.

Conclusions:

The digital quantification method provides a reliable tool for bone formation assessment in histological studies.
While OPN-HA did not significantly enhance overall bone regeneration compared to HA, it showed localized benefits at defect margins.
Further research may explore the localized effects of OPN-HA for targeted bone regeneration strategies.