Non-contact electromagnetic induction heating for eradicating bacteria and yeasts on biomaterials and possible relevance to orthopaedic implant infections: In vitro findings

Bone & Joint Research
B G PijlsR G H H Nelissen

Abstract

Infection of implants is a major problem in elective and trauma surgery. Heating is an effective way to reduce the bacterial load in food preparation, and studies on hyperthermia treatment for cancer have shown that it is possible to heat metal objects with pulsed electromagnetic fields selectively (PEMF), also known as induction heating. We therefore set out to answer the following research question: is non-contact induction heating of metallic implants effective in reducing bacterial load in vitro? Titanium alloy cylinders (Ti6Al4V) were exposed to PEMF from an induction heater with maximum 2000 watts at 27 kHz after being contaminated with five different types of micro-organisms: Staphylococcus epidermidis; Staphylococcus aureus; Pseudomonas aeruginosa; spore-forming Bacillus cereus; and yeast Candida albicans. The cylinders were exposed to incremental target temperatures (35°C, 45°C, 50°C, 55°C, 60°C, 65°C, 70°C) for up to 3.5 minutes. There was an average linear heating rate of 0.39°C per second up to the target temperature, and thereafter the target temperature was maintained until the end of the experiment. At 60°C and higher (duration 3.5 minutes), there was a 6-log reduction or higher for every micro-organism tested. A...Continue Reading

References

Jun 10, 2003·The Journal of Bone and Joint Surgery. British Volume·S A W PickeringB E Scammell
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Mar 16, 2016·Journal of Orthopaedic Trauma·Apostolos D Prodromidis, Charalambos P Charalambous

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Citations

Feb 14, 2018·The Bone & Joint Journal·M TarabichiJ Parvizi
Dec 26, 2018·Bone & Joint Research·B G PijlsR G H H Nelissen
Jan 29, 2020·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·Bart G PijlsRob G H H Nelissen
Jul 9, 2020·Bone & Joint Research·S-T Jerry TsangA Hamish R W Simpson
May 21, 2020·Bone & Joint Research·Bart G PijlsRob G H H Nelissen
Dec 15, 2020·Bone & Joint Research·Shao-Ting Jerry Tsang, A Hamish R W Simpson

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Methods Mentioned

BETA
lavage
femoral hip implant

Software Mentioned

SPSS

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