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Related Concept Videos

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...
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...
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 Formation by Endochondral Ossification01:24

Bone Formation by Endochondral Ossification

Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...
Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...
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 1, 2026

Integrated Bone Formation Through In Vivo Endochondral Ossification Using Mesenchymal Stem Cells
06:05

Integrated Bone Formation Through In Vivo Endochondral Ossification Using Mesenchymal Stem Cells

Published on: July 14, 2023

Bone regeneration: current concepts and future directions.

Rozalia Dimitriou1, Elena Jones, Dennis McGonagle

  • 1Department of Trauma and Orthopaedics, Academic Unit, Clarendon Wing, Leeds Teaching Hospitals NHS Trust, Leeds, UK.

BMC Medicine
|June 2, 2011
PubMed
Summary
This summary is machine-generated.

Bone regeneration is vital for healing fractures and repairing large defects. Current methods like bone grafts and growth factors are being improved with tissue engineering and gene therapy for better bone repair.

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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

Area of Science:

  • Biomedical Engineering
  • Regenerative Medicine
  • Orthopedic Surgery

Background:

  • Bone regeneration is a natural process crucial for fracture healing and bone remodeling.
  • Significant bone defects from trauma, infection, or tumors, and conditions like osteoporosis, impair this process.
  • Existing treatments include autografts, allografts, growth factors, scaffolds, cells, and distraction osteogenesis.

Purpose of the Study:

  • To review current strategies for augmenting impaired bone regeneration.
  • To explore advanced tissue engineering and gene therapy approaches.
  • To identify methods for creating bone graft substitutes with improved biomechanical properties and accelerated healing.

Main Methods:

  • Review of existing literature on bone regeneration strategies.
  • Analysis of current clinical interventions and their limitations.
  • Exploration of emerging technologies in tissue engineering and gene therapy.

Main Results:

  • Current methods like autologous bone grafts have limitations.
  • Tissue engineering, gene therapy, and cell-based therapies show promise for enhanced bone repair.
  • The goal is to develop bone graft substitutes that mimic native bone biomechanics and accelerate regeneration.

Conclusions:

  • Significant challenges remain in achieving optimal bone regeneration for large defects and compromised conditions.
  • Advanced 'local' and 'systemic' strategies are under investigation to overcome current limitations.
  • Future research aims to develop superior bone graft substitutes and address systemic bone disorders.