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Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_4 | Pages 83 - 83
1 Apr 2018
Hameister R Dheen ST Lohmann CH Kaur C Singh G
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Background

Mechanisms underlying implant failure remain incompletely described, though the presence of macrophage-mediated inflammatory reactions is well documented. Hypoxia has a critical role in many diseases and is known to be interdependent with inflammation. Metals used for joint replacements have also been reported to provoke hypoxia-like conditions. In view of this, we aim to investigate hypoxia-associated factors in aseptic loosening and osteoarthritis with a focus on macrophages.

Methods

Western blotting, calorimetric assay, haematoxylin-eosin staining, immunohistochemistry, double-immunofluorescence and transmission electron microscopy were performed on capsular tissue obtained from patients undergoing primary implantation of a total hip replacement for osteoarthritis and from patients undergoing revision surgery for aseptic loosening to investigate the presence of hypoxia-associated factors.