Radiofrequency induced heating of biodegradable orthopaedic screw implants during magnetic resonance imaging

Surface engineering of pure magnesium in medical implant applications

“…Among the various commonly used medical metal implants, Mg and its alloys demonstrate outstanding mechanical characteristics, biodegradability, and the ability for degradation by-products to be metabolically excreted from the body without adverse effects [ [15] , [16] , [17] , [18] ]. Currently, medical Mg implants primarily include Mg alloys such as WE43 [ [19] , [20] , [21] , [22] , [23] , [24] ], AZ31 [ [25] , [26] , [27] , [28] , [29] ], Mg-Ca [ [30] , [31] , [32] , [33] ], and MgZnCa [ [34] , [35] , [36] ]. However, the incorporation of other metallic elements into Mg alloys does not necessarily ensure favorable biocompatibility of these added elements and complete in vivo degradation.…”

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“…In the academic world, degradable metals have experienced the initial skepticism of the industry in 2001 to 2022 world biomaterials conference was set up as a sub-venue for the first time (marking the acceptance of the international biomaterials community, and then set up as a sub-venue for three consecutive sessions in 2016 and 2020), and then to the 2018 biomaterials definition consensus meeting organized by the International Union of Biomaterials Science and Engineering, the definition of degradable metals was voted on, and in 2020, the "degradable metals" It was included as a chapter in the 4th edition of the Biomaterials Science textbook in the United States. In the industry, it has been reduced in the last 20 years [12][13][14]. The R&D of metal related medical device products has also experienced device products (scaffolds, stents, dental and orthro-implants) [15].…”

MRI of Implantation Sites Using Parallel Transmission of an Optimized Radiofrequency Excitation Vector

“…Considering the increasing population of patients with orthopedics implants [32], understanding and managing the interactions of conductive implants with RF fields is of profound importance for advancing safe and B + 1 -distortion-free MRI of implantation sites. This need concerns conventional titanium or stainless-steel-based implants and clinically available Mg-based biodegradable implants [33,34] which promote patient comfort and reduce healthcare costs by making implant removal surgery obsolete. This involves particularly small biodegradable screw or fixation implants (short implant), which are used as a real-clinical-world example in our study.…”