Magnesium implants: prospects and challenges

Parama Chakraborty Banerjee, Saad Al-Saadi, Lokesh Kumar Choudhary, Shervin Eslami Harandi, Raman Singh

Research output: Contribution to journalReview ArticleOtherpeer-review

19 Citations (Scopus)

Abstract

Owing to their suitable mechanical property and biocompatibility as well as the technological possibility of controlling their high corrosion rates, magnesium and its alloys have attracted significant attention as temporary bio-implants. Though the ability of magnesium to harmlessly biodegrade and its inherent biocompatibility make magnesium alloys a suitable choice for a temporary implant, their high corrosion rates limit their practical application, as the implants can potentially corrode away even before the healing process has completed. Different approaches, such as alloying, surface modification, and conversion coatings, have been explored to improve the corrosion resistance of various magnesium alloys. However, the corrosion behavior of magnesium implants with and without a surface modification has been generally investigated under in-vitro conditions, and studies under in-vivo conditions are limited, which has contributed to the lack of translation of magnesium implants in practical applications. This paper comprehensively reviews the prospects of magnesium alloy implants and the current challenges due to their rapid degradation in a physiological environment. This paper also provides a comprehensive review of the corrosion mitigation measures for these temporary implants.

Original languageEnglish
Article number136
Number of pages21
JournalMaterials
Volume12
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Corrosion
  • Implant
  • Magnesium alloy

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