since, the use of titanium is done extensively in biomedical implants, but stress shielding is issue due its higher density. I need information about latest alloys being developed for biomedical applications
Aluminum alloys react with body fluids with the formation of toxic compounds and, therefore, can not be used as implants. Magnesium alloys are not as toxic to the human body, but they are not resistant to corrosion in body fluids. Only such alloys as titanium, zirconium and tantalum alloys together with CoCrMo alloys are sufficiently corrosion resistant and at the same time biologically neutral for applications within the human body.
Dear Dr. Lucky,
I suggest you to have a look at the following papers:
-Multicomponent Alloys for Biomedical Applications
Lucien Reclaru, Lavinia Cosmina Ardelean, Alexandru Florian Grecu and Catalin Adrian Miu
From: Engineering Steels and High Entropy-Alloys 2019 – Open access
Available at: https://www.intechopen.com/online-first/multicomponent-alloys-for-biomedical-applications
-The current trends of Mg alloys in biomedical applications—A review
Usman Riaz, Ishraq Shabib, Waseem Haider
J Biomed Mater Res B Part B. 2018:9999B:9999B:1–27 (2018)
Available at: https://www.cmich.edu/colleges/se/Engi_Tech/fac_staff/Documents/The%20current%20trends%20of%20Mg%20alloys%20in%20biomedical%20applications-%20A%20review.pdf
- 5 - Metallic biomaterials: types and advanced applications
From: New Functional Biomaterials for Medicine and Healthcare
Elena P.Ivanova, KaterynaBazaka, Russell J.Crawford
Pages 121-147 (2014)
Available at: https://www.sciencedirect.com/science/article/pii/B9781782422655500051
Regarding Al alloys as material for biomedical implants their use is not compatible, in general, because aluminium is the major constituent in the alloy.
Aluminium is toxic in high doses, and can lead to bone disease, encephalopathy, and other conditions, generally as a result of renal failure when it is allowed to build up in the body. Please note that Al ions are present in many items we consume; as long as the amount accumulated in the body is below a threshold level, it does not cause any adverse effects.
Best regards, Pierluigi Traverso.
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