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Fractures: Bone Repair

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...

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Updated: May 20, 2026

Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering

Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering

Published on: July 27, 2022

Magnetic responsive hydroxyapatite composite scaffolds construction for bone defect reparation.

Xiao Bo Zeng¹, Hao Hu, Li Qin Xie

¹National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, People's Republic of China.

International Journal of Nanomedicine

|August 1, 2012

Summary

Magnetic scaffolds made of magnetic nanoparticles (MNPs) and hydroxyapatite (HA) enhance bone repair by stimulating cell growth and differentiation. Higher MNP content leads to greater positive effects on cell behavior.

Keywords:

bone repair magnetic nanoparticles magnetic responsive magnetic therapy

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Decellularized Apple-Derived Scaffolds for Bone Tissue Engineering In Vitro and In Vivo

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Published on: February 23, 2024

Area of Science:

Biomaterials Science
Tissue Engineering
Nanotechnology

Background:

Magnetic biomimetic scaffolds are gaining interest for tissue engineering applications.
A novel magnetic scaffold combining magnetic nanoparticles (MNPs) and hydroxyapatite (HA) has been developed for bone repair.

Purpose of the Study:

To investigate the impact of MNP content within HA scaffolds on cellular responses.
To examine the interaction between magnetic scaffolds and external magnetic fields.
To evaluate cell adhesion, proliferation, and differentiation under varying MNP concentrations and magnetic field exposure.

Main Methods:

Fabrication of MNP-HA magnetic scaffolds with MNP content ranging from 0.2% to 2%.
In vitro culture of ROS 17/2.8 and MC3T3-E1 cells on scaffolds with and without an external magnetic field.
Assessment of cell behavior using scanning electron microscopy, confocal laser scanning microscopy, MTT assays, and biochemical tests for alkaline phosphatase and bone gla protein activity.

Main Results:

Magnetic scaffolds positively influenced cell adhesion, proliferation, and differentiation.
Increased MNP content in the scaffolds resulted in more pronounced stimulation of cellular activities.
The scaffolds demonstrated responsiveness to external magnetic fields, enhancing cell proliferation and differentiation.

Conclusions:

The developed MNP-HA magnetic scaffolds show promise for bone tissue engineering.
The magnetic properties of the scaffolds, modulated by MNP content, synergistically enhance the effects of external magnetic fields on cell behavior.
These findings highlight the potential of magnetic scaffolds to improve bone regeneration strategies.