The risk for infection after allogenic bone transplantation for the reconstruction of bony defects is high. This work describes the disinfection of bony transplants with High hydrostatic pressure (HHP), which is already established for disinfection in food technology. HHP with pressures up to 600 MPa sterilised 71% of the native bony specimens of patients suffering from osteitis, compared to 38% sterile bones in the control group. To increase the safety of testing, the infected bone specimens were enriched by the infecting organism before HHP- treatment. After this modification, all controls showed positive bacterial growth, a complete inactivation could only be achieved in 10% of the HHP-treated samples. Gram positive strains proved higher pressure resistance. Mechanical destruction of the cell-membrane integrity was observed by scanning electron microscopy. To establich HHP- technology for the use in clinical settings, the effectiveness has to be improved by optimising treatment temperature, pressure levels as well as the synergistic treatment media.
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The risk for infection after allogenic bone transplantation for the reconstruction of bony defects is high. This work describes the disinfection of bony transplants with High hydrostatic pressure (HHP), which is already established for disinfection in food technology. HHP with pressures up to 600 MPa sterilised 71% of the native bony specimens of patients suffering from osteitis, compared to 38% sterile bones in the control group. To increase the safety of testing, the infected bone specimens we...
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