Science and Technology News

Bacteria-Resistant Bone Implantation

August 21 , 2026 12 hrs 0 min 102 0

Researchers at Indian Institute of Technology (IIT) Mandi developed a bio-inspired coating for three-dimensional (3D)-printed bone implants.
The coating uses tiny hydroxyapatite structures that resemble sea urchins and can mechanically damage bacteria.
The implants use polylactic acid (PLA), a biodegradable plastic, but its surface does not easily bond with bones.
The new coating improves bone integration and helps reduce bacterial infection without relying on antibiotics or antibacterial chemicals.
The technique involves treating the implant with an alkaline solution followed by hydrothermal treatment at 90°C, forming needle-like hydroxyapatite clusters.