Morphological Change of Heat Treated Bovine Bone: A Comparative Study

Area of Science:

• Biomaterials Science
• Materials Engineering
• Orthopedic Research

Background:

• Bovine cortical bones (BCBs) are a potential source for biomaterials.
• Hydroxyapatite (HAp) is a key component of bone mineral.
• Developing porous nanoHAp scaffolds is crucial for bone regeneration.

Purpose of the Study:

• To determine the optimal heat treatment temperature for developing porous nanoHAp from BCBs.
• To characterize the morphology and properties of nanoHAp crystals produced.
• To evaluate the potential of the synthesized nanoHAp as a scaffold for load-bearing tissues.

Main Methods:

• Bovine cortical bone specimens were subjected to two-step sintering up to 900 °C.
• Thermogravimetric analysis (TGA) was used for thermal characterization.
• X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) with Energy-Dispersive X-ray Spectroscopy (EDS) were employed for material analysis.

Main Results:

• Optimal porous nanoHAp crystal morphology was achieved at 900 °C.
• XRD analysis predicted HAp particle morphology, verified by SEM.
• Equiaxed polycrystalline HAp particles with uniform porosity were obtained at 900 °C.

Conclusions:

• Heat treatment at 900 °C yields porous nanoHAp with ideal morphology from bovine cortical bone.
• This porous nanoHAp is a promising candidate for *in situ* scaffolds in load-bearing tissue applications.
• The study demonstrates a novel method for producing biomimetic bone graft materials.