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@ARTICLE{Sefa:589466,
author = {Sefa, Sandra and Espiritu, Jonathan and Ćwieka, Hanna and
Greving, Imke and Flenner, Silja and Will, Olga and Beuer,
Susanne and Wieland, D. C Florian and Willumeit-Römer,
Regine and Zeller-Plumhoff, Berit},
title = {{M}ultiscale morphological analysis of bone
microarchitecture around {M}g-10{G}d implants},
journal = {Bioactive materials},
volume = {30},
issn = {2097-1192},
address = {[Amsterdam]},
publisher = {Elsevier B.V.},
reportid = {PUBDB-2023-05209},
pages = {154 - 168},
year = {2023},
abstract = {The utilization of biodegradable magnesium (Mg)-based
implants for restoration of bone function following trauma
represents a transformative approach in orthopaedic
application. One such alloy, magnesium-10 weight percent
gadolinium (Mg-10Gd), has been specifically developed to
address the rapid degradation of Mg while enhancing its
mechanical properties to promote bone healing. Previous
studies have demonstrated that Mg-10Gd exhibits favorable
osseointegration; however, it exhibits distinct
ultrastructural adaptation in comparison to conventional
implants like titanium (Ti). A crucial aspect that remains
unexplored is the impact of Mg-10Gd degradation on the bone
microarchitecture. To address this, we employed hierarchical
three-dimensional imaging using synchrotron radiation in
conjunction with image-based finite element modelling. By
using the methods outlined, the vascular porosity, lacunar
porosity and the lacunar-canaliculi network (LCN) morphology
of bone around Mg-10Gd in comparison to Ti in a rat model
from 4 weeks to 20 weeks post-implantation was investigated.
Our investigation revealed that within our observation
period, the degradation of Mg-10Gd implants was associated
with significantly lower (p < 0.05) lacunar density in the
surrounding bone, compared to Ti. Remarkably, the LCN
morphology and the fluid flow analysis did not significantly
differ for both implant types. In summary, a more pronounced
lower lacunae distribution rather than their morphological
changes was detected in the surrounding bone upon the
degradation of Mg-10Gd implants. This implies potential
disparities in bone remodelling rates when compared to Ti
implants. Our findings shed light on the intricate
relationship between Mg-10Gd degradation and bone
microarchitecture, contributing to a deeper understanding of
the implications for successful osseointegration.},
cin = {Hereon / DOOR ; HAS-User},
ddc = {630},
cid = {I:(DE-H253)Hereon-20210428 / I:(DE-H253)HAS-User-20120731},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3)},
pid = {G:(DE-HGF)POF4-6G3},
experiment = {EXP:(DE-H253)P-P05-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {37575877},
UT = {WOS:001053239200001},
doi = {10.1016/j.bioactmat.2023.07.017},
url = {https://bib-pubdb1.desy.de/record/589466},
}