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. 2020 May 21;21(10):3628. doi: 10.3390/ijms21103628

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Illustration of a porous AMD screw. The control interference screw was made with Ti and had a screw body length of 12 mm, core diameter of 1.8 mm, thread diameter of 2.1 mm, head diameter of 2.4 mm, and pitch of 1.0 mm (Depuy Synthes, Johnson and Johnson, New Brunswick, NJ, USA). The AMD screw with a similar morphology was produced using an EOSINT M 280 laser sintering system (EOS GmbH, Munich, Germany). The AMD interference screws received NaOH and heat treatments for bioactive ceramic surface modification.