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Related Concept Videos

Bone Remodeling01:40

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.
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...
Whole Body Regeneration01:33

Whole Body Regeneration

Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential; even...
Fractures: Bone Repair01:27

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the procedure...
Overview of Regeneration and Repair01:19

Overview of Regeneration and Repair

Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
Regeneration
All animals have varying degrees of...
Osteoclasts in Bone Remodeling01:31

Osteoclasts 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...

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Related Experiment Video

Updated: Jun 30, 2026

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
09:35

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

Published on: September 11, 2015

An update on recent advances in bone regeneration.

Panayotis N Soucacos1, Elizabeth O Johnson, George Babis

  • 1Department of Orthopaedic Surgery, University of Athens, School of Medicine, Athens, Greece. psoukakos@ath.forthnet.gr

Injury
|September 23, 2008
PubMed
Summary

Developing effective bone regeneration therapies is crucial for addressing bone loss. Recent advances in understanding bone biology offer new therapeutic strategies for bone repair.

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Use of Human Perivascular Stem Cells for Bone Regeneration

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Last Updated: Jun 30, 2026

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
09:35

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

Published on: September 11, 2015

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

Use of Human Perivascular Stem Cells for Bone Regeneration
07:05

Use of Human Perivascular Stem Cells for Bone Regeneration

Published on: May 25, 2012

Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Orthopedic Surgery

Background:

  • Bone loss due to trauma, cancer, surgery, or congenital issues presents a significant clinical challenge.
  • Current bone regeneration methods, including bone grafting and scaffold-based approaches, have limitations.
  • Understanding the molecular mechanisms of bone formation, resorption, and remodeling is key to improving therapies.

Purpose of the Study:

  • To highlight the limitations of current bone regeneration strategies.
  • To emphasize the importance of understanding normal bone regeneration processes.
  • To explore how new insights into bone biology can inform therapeutic development.

Main Methods:

  • Review of current bone regeneration strategies (bone grafting, bioactive factors, cell therapies, scaffolds).
  • Analysis of recent advancements in understanding molecular mechanisms of bone formation and resorption.
  • Investigation of feedback signals controlling bone remodeling.

Main Results:

  • Bone regeneration science is still in its early stages, with existing therapies having significant drawbacks.
  • A deeper understanding of the temporal and spatial cascade of events in bone regeneration is emerging.
  • New knowledge of homeostatic mechanisms regulating bone remodeling reveals potential therapeutic targets.

Conclusions:

  • Effective bone regeneration therapies are a priority due to widespread bone loss.
  • Further research into the molecular intricacies of bone biology is essential for clinical advancements.
  • Insights into bone remodeling offer promising avenues for developing novel bone repair strategies.