Hyperbaric Oxygen Therapy in Calcaneal Intraarticular Fractures: Can it Decrease the Soft-tissue Complication Rate? (HOCIF)

• Postoperative rate of wound complication after calcaneal plating [ Time Frame: 30 days ] [ Designated as safety issue: Yes ]
  Rate of postoperative wound edge necrosis and superficial or deep infection determined by wound redness, secretion of pus, detection of a microbial agens, CRP elevation and detection of fluid by sonography.
  
  

• Effect of HBOT on postoperative microcirculation of the foot, clinical outcome [ Time Frame: 2 years ] [ Designated as safety issue: Yes ]
  Complications later than day 20 post-surgery, clinical and radiographic outcome (2years follow-up), To evaluate microcirculatory criteria of cutaneous tissue, To identify patients at risk for soft-tissue complication after calcaneal plate osteosynthesis and to determine the optimal time point for operative intervention, To evaluate the effect of HBOT on postoperative microcirculation, To identify a correlation between HBOT with expected limited soft-tissue complication rate and the clinical and radiographic outcome two years after surgery.
  
  

Wound complication remains an important problem in calcaneal fractures, with some plate series quoting up to a 27% infection rate. The original hypothesis stimulating this study is that HBOT after calcaneal plating can decrease such high rates of infection. Validation of this hypothesis would not only alter guidelines for standard procedure (plate osteosynthesis), but would also help to avoid difficult follow-up operations and improve functional outcome after calcaneal fracture. To date, this therapeutic approach has not been systematically tested in the existing literature. As further motivation for this study, the assessment of the existent microcirculation as a potential screening parameter will be analysed. In order to do so, it is assumed that wound infection partially develops due to disruptions in the microcirculation. This leads to the hypotheses, that by measuring the microcirculation, patients at high risk for post operative infections could be identified before operation, planning a different less invasive approach or conservative treatment.