Magnesium degradation under physiological conditions - Best practice.

Area of Science:

• Biomaterials Science
• Materials Engineering
• Corrosion Science

Background:

• Magnesium alloys are promising for biomedical applications due to their biodegradability.
• Current in vitro testing methods often lack physiological relevance, limiting predictive power.
• Understanding magnesium degradation mechanisms is crucial for safe and effective clinical use.

Purpose of the Study:

• To review the application of physiological conditions for mechanistic understanding of magnesium degradation.
• To address the need for realistic and predictive in vitro setups beyond simplified alloy screening.
• To provide a guideline for harmonized laboratory approaches in magnesium degradation studies.

Main Methods:

• Review of existing literature on in vitro testing of magnesium alloys.
• Analysis of technical measures for simulating physiological conditions.
• Identification of challenges and caveats in establishing complex in vitro systems.

Main Results:

• Physiological conditions are essential for accurate mechanistic understanding of magnesium degradation.
• Simplified laboratory setups are insufficient for predicting in vivo performance.
• Harmonized laboratory approaches are necessary for reproducible and reliable results.

Conclusions:

• Implementing physiological conditions in vitro is critical for advancing magnesium alloy development.
• Standardized methodologies will improve the reliability of in vitro testing for biomedical applications.
• This review serves as a guide for researchers establishing advanced in vitro magnesium degradation studies.