Anterolateral‐Thigh Fascia Lata Free Flap Versus Fibula Free Flap for Mandibular Osteoradionecrosis

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OBJECTIVES: While standard treatments for mandibular osteoradionecrosis (MORN) exist for mild/superficial and severe/full thickness disease, there is no consensus on treatment for advanced, partial thickness disease. In this niche, the anterolateral thigh fascia lata (ALTFL) "rescue" flap has managed MORN successfully. This study aimed to compare ALTFL with fibula free flap (FFF) reconstruction to determine differences in outcomes, complications, and postoperative logistics. METHODS: A retrospective chart review of patients undergoing ALTFL or FFF for MORN between 2008 and 2024 was carried out. RESULTS: Fifty-one patients with Grade III (n = 26) or IV (n = 25) MORN underwent FFF (n = 22) or ALTFL (n = 29). ALTFL patients were older but did not differ in preoperative MORN treatment or risk factors compared to FFF. Median operative time for ALTFL was significantly less than FFF in both Grade III (298 min vs. 516 min) and IV (298 min vs. 599 min), without differences in subsites of mandible involved. Hospitalization for ALTFL was significantly shorter than FFF for both Grade III (2 days vs. 7 days) and IV (4.5 days vs. 7 days) without differences in peri-operative complications, flap failure or MORN resolution. Tracheotomy was performed more often for patients undergoing FFF for Grade III MORN. Patients who underwent ALTFL were more likely to return to a diet beyond soft within the follow-up period. CONCLUSIONS: The ALTFL rescue flap offers reduced morbidity and improved resource allocation compared to FFF for the treatment of advanced, partial thickness MORN with similar outcomes.

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