Combined Porous-Monolithic TiNi Materials Surface-Modified with Electron Beam for New-Generation Rib Endoprostheses.

Area of Science:

• Biomaterials Engineering
• Materials Science
• Orthopedic Implants

Background:

• Titanium Nickel (TiNi) alloys are crucial for implant fabrication, particularly for rib replacements.
• Current TiNi materials often lack combined porous-monolithic structures with excellent biocompatibility, corrosion resistance, and mechanical durability.
• Achieving all desired properties in a single TiNi material remains a significant challenge, driving ongoing research.

Purpose of the Study:

• To develop novel porous-monolithic TiNi materials suitable for rib endoprostheses.
• To evaluate the surface characteristics, corrosion resistance, and biocompatibility of the new TiNi materials.
• To assess the potential of these materials for promoting cell growth.

Main Methods:

• Fabrication of porous-monolithic TiNi by sintering TiNi powder onto TiNi plates.
• Surface modification using a high-current pulsed electron beam.
• Comprehensive analysis including surface/phase analysis, corrosion testing, biocompatibility assays (hemolysis, cytotoxicity), and cell growth tests.

Main Results:

• The developed porous-on-monolith TiNi materials demonstrated improved corrosion resistance compared to flat TiNi monoliths.
• The materials exhibited good biocompatibility, with low hemolysis and cytotoxicity.
• Positive cell viability and growth were observed on the surface of the new TiNi materials.
• Surface modification resulted in varied porosity and morphology, influencing material properties.

Conclusions:

• The novel porous-on-monolith TiNi materials offer a promising alternative for rib endoprostheses.
• These materials present a favorable combination of enhanced corrosion resistance and biocompatibility.
• The developed TiNi implants show potential for improved integration and function in orthopedic applications.