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General Orthopaedics

A REVIEW OF 45 OPEN TIBIAL FRACTURES COVERED WITH FREE FLAPS. ANALYSIS OF COMPLICATIONS, MICROBIOLOGY AND PROGNOSTIC FACTORS

European Bone And Joint Infection Society (EBJIS) 34th Annual Meeting: PART 1



Abstract

Treatment of open fractures is complex and controversial.

The purpose of the present study is to add evidence to the management of open tibial fractures, where tissue loss necessitates cover with a free flap. We identified factors that increase the risk of complications. We questioned whether early flap coverage improved the clinical outcome and whether we could improve our antibiotic treatment of open fractures. From 2002 to 2013 we treated 56 patients with an open tibial fracture covered with a free flap. We reviewed patient records and databases for type of trauma, smoking, time to tissue cover, infection, amputations, flap loss and union of fracture. We identified factors thatincrease the risk of complications. We analyzed the organisms cultured from open fractures to propose the optimal antibiotic prophylaxis.

Follow-up was minimum one year. Primary outcome was infection, bacterial sensitivity pattern, amputation, flap failure and union of the fracture.

When soft tissue cover was delayed beyond 7 days, infection rate increased from 27% to 60% (p<0.04). High-energy trauma patients had a higher risk of amputation, infection, flap failure and non-union. Smokers had a higher risk of non-union and flap failure. The bacteria found were often resistant to Cefuroxime, aminoglycosides or amoxicillin, but sensitive to Vancomycin or Meropenem.

Flap cover within one week is essential to avoid infection. High-energy trauma and smoking are important predictors of complications. We suggest antibiotic prophylaxis with Vancomycin and Meropenem until the wound is covered in these complex injuries.

The authors wish to thank Christian E Forrestal for secretarial assistance, spreadsheets and figures, MD Maria Petersen for academic feedback and typography.

Table: Culture results. Depicts the organisms isolated from the wounds, their number N and the number of bacteria that were fully susceptible to antibiotics according to the culture results in falling order on day 2–30 from the trauma. Most organisms were resistant to Cefuroxime. A blank space denotes that the organism was not tested against this antibiotic. A “0” denotes that the organism was not fully sensitive to the antibiotic.


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