Insight into the bioabsorption of Fe-based materials and their current developments in bone applications

Abdul Hakim Md Yusop, Mokhamad Fakhrul Ulum, Ahmed Al Sakkaf, Djoko Hartanto, Hadi Nur*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

14 Citations (Scopus)

Abstract

Iron (Fe) and Fe-based materials have been vigorously explored in orthopedic applications in the past decade mainly owing to their promising mechanical properties including high yield strength, elastic modulus and ductility. Nevertheless, their corrosion products and low corrosion kinetics are the major concerns that need to be improved further despite their appealing mechanical strengths. The current studies on porous Fe-based scaffolds show an improved corrosion rate but the in vitro biocompatibility is still problematic in general. Unlike the Mg implants, the biodegradation and bioabsorption of Fe-based implants are still not well described. This vague issue could implicate the development of Fe-based materials as potential medical implants as they have not reached the clinical trial stage yet. Thus, there is a need to understand in-depth the Fe corrosion behavior and its bioabsorption mechanism to facilitate the material design of Fe-based scaffolds and further improve its biocompatibility. This manuscript provides an important insight into the basic bioabsorption of the multi-ranged Fe-based corrosion products with a review of the latest progress on the corrosion & in vitro biocompatibility of porous Fe-based scaffolds together with the remaining challenges and the perspective on the future direction.

Original languageEnglish
Article number2100255
JournalBiotechnology Journal
Volume16
Issue number12
DOIs
Publication statusPublished - Dec 2021

Keywords

  • Fe corrosion
  • bioabsorption
  • biocompatibility
  • corrosion products
  • porous Fe scaffolds

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