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Periprosthetic Joint Infections of the Knee Lastingly Impact the Bone Homeostasis

After periprosthetic joint infection (PJI)-dependent revision surgery, a significantly elevated number of patients suffer from prosthesis failure due to aseptic loosening and require additional revision surgery despite clearance of the initial infection. The mechanisms underlying this pathology are...

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Published in:Journal of bone and mineral research 2023-10, Vol.38 (10), p.1472-1479
Main Authors: Bandick, Evgeniya, Biedermann, Lara, Ren, Yi, Donner, Stefanie, Thiele, Mario, Korus, Gabriela, Tsitsilonis, Serafeim, Müller, Michael, Duda, Georg, Perka, Carsten, Kienzle, Arne
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Language:English
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Summary:After periprosthetic joint infection (PJI)-dependent revision surgery, a significantly elevated number of patients suffer from prosthesis failure due to aseptic loosening and require additional revision surgery despite clearance of the initial infection. The mechanisms underlying this pathology are not well understood, as it has been assumed that the bone stock recovers after revision surgery. Despite clinical evidence suggesting decreased osteogenic potential in PJI, understanding of the underlying biology remains limited. In this study, we investigated the impact of PJI on bone homeostasis in a two-stage exchange approach at explantation and reimplantation. 64 human tibial and femoral specimens (20 control, 20 PJI septic explantation, and 24 PJI prosthesis reimplantation samples) were analyzed for their bone microstructure, cellular composition, and expression of relevant genetic markers. Samples were analyzed using X-ray microtomography, Alcian blue and TRAP staining, and RT-qPCR. In patients with PJI, bone volume (BV/TV; 0.173 ± 0.026; p 
ISSN:0884-0431
1523-4681
DOI:10.1002/jbmr.4892