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Developing and analyzing a Nanocomposites coated material for hammertoe implants.

Gayathri Ramesh1, Vamsi Krishna Dommeti2, Hari Raj Kumar1

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Summary
This summary is machine-generated.

A new hydroxyapatite-zirconia-graphene oxide nanocomposite coating enhances 316L stainless steel implants. This advanced coating improves corrosion resistance and provides potent antibacterial and biocompatible properties for medical devices.

Keywords:
Antibacterial assayCell viability assayGraphene oxideHydroxyapatiteSurface coatingZirconium dioxide

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Orthopedic Implants

Background:

  • Hammertoe implants made of 316L stainless steel (SS) face challenges like bacterial colonization and material corrosion.
  • These issues can lead to infections and other complications, limiting implant longevity and patient outcomes.

Purpose of the Study:

  • To develop a novel nanocomposite coating for 316L SS to enhance its corrosion resistance, antibacterial activity, and biocompatibility.
  • To address the limitations of conventional implant materials for orthopedic applications.

Main Methods:

  • A nanocomposite coating of hydroxyapatite (HAp), zirconia (ZrO₂), and graphene oxide (GO) was applied to 316L SS.
  • Characterization involved FTIR, SEM, and EDX.
  • Antibacterial activity, in vitro corrosion resistance (using simulated body fluid - SBF), and cell viability assays were performed.

Main Results:

  • The HAp-ZrO₂-GO coating significantly improved the corrosion resistance of 316L SS.
  • The coated material demonstrated potent antibacterial properties, inhibiting bacterial colonization.
  • Biocompatibility was confirmed through cell survival assays, and apatite layer formation in SBF indicated enhanced bioactivity.

Conclusions:

  • The HAp-ZrO₂-GO nanocomposite coating offers a promising solution for developing advanced, long-lasting, antimicrobial, and biocompatible bioimplant coatings.
  • This scalable and cost-effective method has significant implications for biomedical engineering and improving patient outcomes in orthopedic surgery.