Artificial Bone Materials for Infected Bone Defects: Advances in Antimicrobial Functions.

Area of Science:

• Biomaterials Science
• Orthopedic Surgery
• Infectious Diseases

Background:

• Infected bone defects result from bacterial contamination, leading to bone loss and challenging clinical outcomes.
• Traditional treatments often fail due to bacterial evasion mechanisms like biofilm formation and intracellular invasion.
• Advanced biomaterials are emerging as promising therapeutic agents for these complex conditions.

Purpose of the Study:

• To review pathogenic mechanisms of infected bone defects.
• To explore antibacterial materials for enhanced bone regeneration.
• To discuss innovations and clinical translation of antimicrobial bone materials.

Main Methods:

• Review of literature on pathogenic mechanisms of infected bone defects.
• Analysis of intrinsically antibacterial materials (e.g., metal alloys, hydroxyapatite, chitosan).
• Evaluation of strategies to enhance material antibacterial functionality (ion incorporation, surface modification, material combinations).

Main Results:

• Identified key pathogenic mechanisms including biofilm formation and bacterial internalization.
• Detailed intrinsic antibacterial materials and enhancement strategies.
• Highlighted innovations like therapeutic agent-releasing, functional contact, and bioresponsive biomaterials.

Conclusions:

• Advancements in biomaterials offer promising strategies for treating infected bone defects.
• These materials enhance antibacterial efficacy and promote bone healing.
• Future therapies will be more biocompatible, effective, and personalized for bone reconstruction.