Magnesium-containing implants enhance bone healing: A mechanobiological perspective

Area of Science:

• Biomaterials Science
• Orthopedic Engineering
• Regenerative Medicine

Background:

• Traditional bone implants often use bioinert materials, leading to issues like stress shielding.
• Magnesium (Mg) is a promising degradable biomaterial for bone healing implants.
• Existing research often emphasizes Mg's bioactivity and osteoimmunology, with less focus on its mechanobiological role.

Purpose of the Study:

• To highlight the mechanobiological role of magnesium (Mg) in bone healing implants.
• To summarize the benefits of Mg-containing implants in bone mechanotransduction and cellular events.
• To provide a mechanistic understanding of Mg's positive influence on bone regeneration.

Main Methods:

• Literature review synthesizing studies on Mg's mechanobiological effects in bone healing.
• Analysis of Mg's biomechanical benefits, including stress shielding prevention.
• Synthesis of Mg's attributes related to bone-implant integration and synergy with physical stimuli.

Main Results:

• Mg implants facilitate mechanotransduction and cellular events crucial for bone healing.
• Mg offers biomechanical advantages, mitigating stress shielding.
• Mg exhibits exceptional bone-implant integration and amplifies new bone formation through synergistic effects with physical stimuli.
• Activation of specific mechanotransduction signaling pathways by Mg is summarized.

Conclusions:

• Magnesium's mechanobiological properties offer significant advantages for next-generation bone healing implants.
• Understanding Mg's interaction with physical loading and degradation is key to overcoming clinical translation challenges.
• Further research and solutions are needed to accelerate the clinical application of Mg-containing implants.