Comparing Fibula Flap Insetting Techniques for Pediatric Oncologic Extremity Reconstruction

Area of Science:

• Orthopedic surgery
• Pediatric reconstructive surgery
• Bone healing and regeneration

Background:

• Pediatric extremity reconstruction presents unique surgical challenges.
• Vascularized fibula flaps are a common reconstructive option.
• Optimal flap placement techniques require further investigation.

Purpose of the Study:

• To compare bone union times and functional outcomes of different fibula flap placement techniques in pediatric patients.
• To evaluate the impact of flap position on complications and overall success.

Main Methods:

• Retrospective cohort study of 33 pediatric patients undergoing fibula flap reconstruction (2001-2018).
• Analysis of comorbidities, complications, and outcomes, including time to complete fibula union.
• Comparison of onlay, intramedullary, and intercalary fibula flap placements.

Main Results:

• Intercalary fibula placement (3.4 months) showed significantly shorter union times than onlay (13.5 months) or intramedullary (14.6 months) placements (P=0.002).
• Complications like allograft fracture and hardware removal were associated with longer union times.
• 97% of patients achieved full union and functional reconstruction.

Conclusions:

• Fibula flap reconstruction is a safe and effective method for pediatric long-bone defects.
• Intercalary placement is associated with faster bone union compared to onlay or intramedullary techniques.
• Avoiding complications like allograft fracture and hardware removal may improve union times.