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The Bone Matrix

The Bone Matrix

Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in...

Essential Minerals for Bone Health

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...

Bone Remodeling and Repair

Bone Remodeling and Repair

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.

Bone Structure

Bone Structure

Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.

Roles of Electrolytes: Calcium and Phosphate

Roles of Electrolytes: Calcium and Phosphate

Calcium and phosphate are essential electrolytes in the human body, with calcium being the most abundant mineral. Around 99% of the body's calcium is stored in the skeleton and teeth, forming a crystal lattice of mineral salts in combination with phosphates. Calcium plays crucial roles in various bodily functions such as blood clotting, neurotransmitter release, muscle tone maintenance, and nervous and muscle tissue excitability.
The calcium concentration in blood plasma is primarily...

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Related Experiment Video

Updated: Apr 15, 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

Calcium Phosphate Nanostructured Biocomposites with Applications in Bone Tissue Engineering.

Gabriela Petcu¹, Elena Maria Anghel¹, Viorica Parvulescu¹

¹Institute of Physical Chemistry-Ilie Murgulescu of the Romanian Academy, Spl. Independentei 202, 060021 Bucharest, Romania.

Materials (Basel, Switzerland)

|April 14, 2026

Summary

This review explores nanostructured calcium phosphate (CaP) biocomposites for bone tissue regeneration. These advanced biomaterials offer enhanced bioactivity, mechanical strength, and diverse biological functions for next-generation bone engineering.

Keywords:

bioactivity biocompatibility biocomposites bioglass bone regeneration calcium phosphates functionalization hydroxyapatite ions substitution polymers

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

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Published on: August 8, 2022

Area of Science:

Biomaterials Science
Nanotechnology
Regenerative Medicine

Background:

Nanostructured calcium phosphate-based (CaP) biocomposites are promising for multifunctional biomedical applications.
Recent advances focus on CaP nanocomposites for bone tissue regeneration.

Purpose of the Study:

To provide a critical overview of CaP nanocomposite synthesis for bone regeneration.
To correlate composition, synthesis, and biological properties for developing advanced biomaterials.

Main Methods:

Review of calcium phosphates (e.g., hydroxyapatite, β-tricalcium phosphate).
Analysis of biocomposites functionalized with metal ions, polymers, bioglass, or metal additives.
Correlation of material composition with synthesis routes and biological properties.

Main Results:

Synergistic effects in biocomposites improve bioactivity, mechanical strength, antimicrobial activity, structure, and porosity.
CaP nanocomposites exhibit osteoconductivity, immunomodulatory effects, pro-healing signaling, and anti-inflammatory properties.
Demonstrated potential for drug delivery and theranostic applications.

Conclusions:

CaP-based nanocomposites are versatile biomaterials for bone tissue engineering.
Functionalization strategies enhance material properties and biological functions.
These materials hold significant promise for advanced regenerative medicine and therapeutic applications.