Abstract
Objectives: Soft tissue expansion is one of the main methods for autologous cartilage auricular reconstruction. The aim of this study was to analyze the risk factors for cartilage exposure after this method and to describe a surgical method for this complication. Methods: From January 2018 to December 2020, 853 patients (908 sides) underwent auricular reconstruction with an expanded two-flap method at our center. Thirty-two patients experienced cartilage exposure postoperatively. These patients were set as the case group, and 1:1 matched sampling was performed among patients who did not have cartilage exposure. The matched sample of 32 cases was set as the control group. All 64 patients were evaluated according to the Orbit, Mandible, Ear, Nerve, and Soft tissue (OMENS) classification system to analyze the correlation between cartilage exposure and hemifacial microsomia (HFM) and OMENS subtypes. The complication was repaired with superficial temporal fascial flap combined with skin graft. Results: HFM might be a risk factor for scaffold cartilage exposure, and there was a significant correlation between cartilage exposure and orbital malformation, facial nerve dysplasia, and soft tissue developmental malformation. The use of a superficial temporal fascial flap combined with a split-thickness skin graft to repair the complication achieved satisfactory outcomes. Conclusions: There is a correlation between cartilage scaffold exposure and the severity of HFM. Temporoparietal fascial flap transfer combined with skin grafting proved to be an effective method for cartilage exposure.
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