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. 2019 Apr 22;6(4):211–219. doi: 10.1093/rb/rbz013

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© The Author(s) 2019. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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PEG-4MAL hydrogels with nanoparticles maintained swelling in vitro and retained integrity in vivo. (A) Swelling ratio of PEG-4MAL hydrogels with varying weight percentages over time up to 2 weeks (n = 6/group). (B) Image of hydrogel retrieved from the intra-articular injection site after 3 weeks post-injection and being subjected to daily activities of the mouse.