In this study the investigators sonicate the bearing components of the explanted hip prosthesis which allows highly sensitive detection of in vivo biofilms (qualitatively and quantitatively). The hip prosthesis bearing components are composed from different material. The purpose of this study is to analyse the resistance against biofilm adhesion of ceramic, metal and polyethylene prosthesis components through microbiologic analysis of sonicates.
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Qualitative analysis of sonication fluid after sonication of explanted bearing components of the hip endoprosthesis during a revision surgery
Timeframe: Prospective: patient recruitment up to 2 years
Quantitative Analysis e.g. No. of microorganisms in sonication fluid (CFU/ml) deriving from 3 different biomaterials (namely: Ceramic, Cobalt-chrome-metal, and Polyethylene).
Timeframe: Prospective: patient recruitment up to 2 years