Fracture-related infection (FRI) poses the combined challenges of infection control and reconstruction of critical-sized bone defects. These challenges are amplified in recurrent cases with severely limited autogenous bone availability. We report a 61-year-old male patient with recurrent right tibial FRI after multiple operations and a 20-cm segmental defect. Suspected residual infectious foci were mapped by comparing preoperative fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) with post-debridement CT and were evaluated using site-specific pre- and post-debridement cultures. After a second targeted debridement, all post-debridement cultures were negative, and no clinical or laboratory evidence of active infection was observed during a 2-week antibiotic-free interval. The defect was subsequently reconstructed using the induced membrane technique with 30 cm³ of autogenous cancellous bone, 60 cm³ of demineralized bone matrix, and 9 mg of recombinant human bone morphogenetic protein-2 (rhBMP-2) delivered on a 20 cm³ hydroxyapatite carrier. Radiographic union was achieved, and no clinical evidence of infection recurrence was observed at 1 year. This case suggests the feasibility of combining PET/CT- and culture-guided anatomically targeted debridement with rhBMP-2-augmented induced membrane reconstruction when autogenous graft volume is severely limited.
Level of evidence: V.
Fracture-related infections are challenging complications in orthopedic trauma that often require prolonged treatment and impose a significant healthcare burden. Accurate diagnosis and effective prevention strategies are essential for minimizing their occurrence. A recent international consensus has established standardized diagnostic criteria based on clinical, microbiological, radiological, and histopathological findings. Prevention is the top priority and involves a thorough preoperative risk assessment, along with glycemic control, nutritional optimization, and management of comorbidities, as well as intraoperative and postoperative measures such as appropriate antibiotic prophylaxis, surgical site antisepsis, and meticulous wound care. A multidisciplinary approach involving orthopedic surgeons, infectious disease specialists, and microbiologists is crucial for successfully reducing the burden of fracture-related infections.
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