Suitability of Permanent Probe Implants For the Measurement of Intramedullary Perfusion and Temperature Near the Bone Cortex: A Pilot Study Using a Rabbit Model

  • Christian Hackenbroich Clinic for Small Animals, University of Veterinary Medicine Hannover Foundation, Hannover
  • Simone Wagner Clinic for Small Animals, University of Veterinary Medicine Hannover Foundation, Hannover
  • Fritz Thorey Department of Orthopaedic Surgery, Hannover Medical School, Hannover
  • Henning Windhagen Department of Orthopaedic Surgery, Hannover Medical School, Hannover
  • Andrea Meyer-Lindenberg Clinic for Small Animals, University of Veterinary Medicine Hannover Foundation, Hannover

Abstract

This study was conducted to test the suitability of permanent probe implants for the measurement of  intramedullary perfusion by laser Doppler flowmetry and for the measurement of temperature near the  bone cortex. Measurements were carried out on the conscious animal in order to rule out the influence of  anaesthesia on intramedullary perfusion and temperature. During the first experimental animal trials, some  of the probes made of polysulphon broke and/or gave false temperature measurements, so the original  probe design was modified. The probes were reinforced with metal, and the temperature sensors were made  less permeable to moisture. These modified probes were found to be suitable for permanent measurement  of intramedullary perfusion and of temperature near the cortex in the conscious rabbit. 

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