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Page 2 of 13          Bansberg et al. Plast Aesthet Res 2024;11:12  https://dx.doi.org/10.20517/2347-9264.2023.109

               INTRODUCTION
               Any surgical manipulation of the nasal septum carries the risk of perforation. Procedures that attempt to
               control epistaxis or excise septal lesions can injure nasal mucosa or underlying cartilage, leading to cartilage
               devascularization, necrosis, and progression to a full-thickness septal defect. Septal perforation can be a
               complication of septoplasty, septorhinoplasty, surgical maxillary advancement, and extended endoscopic
               procedures that utilize a transseptal approach to access skull base pathology. Bilateral tearing of the
               mucoperichondrium/periosteum and subsequent suboptimal repair is the likely pathogenesis for most of
               these perforations. Tight septal splinting, nasal packing, and septal hematoma are other surgically related
               causes of perforation. An incidence of septal surgery perforation etiology ranging from 39% to 86% has been
                      [1-6]
               reported .

               The  perforated  nasal  septum  is  a  heterogeneous  condition,  with  management  determined  by
               symptomatology, multiple perforation and patient factors, concurrent nasal conditions, and physician
               experience. Symptoms unresponsive to moisturization and humidification may improve with a septal
                              [7]
               button prosthesis . Repair of the perforation’s posterior margin or posterior septal resection may be offered
                                                              [8,9]
               to selected patients attempting to reduce symptoms . Numerous and varied procedures have been
               developed to close septal perforations, and success rates exceeding 90% are frequently reported [1-6,10,11] .
               Techniques utilizing physiologic nasal mucosal advancement or rotation flaps have dominated the collective
               perforation repair experience since Fairbanks’ 1970 study introducing the bilateral mucosal flap and
                                     [12]
               interposition graft repair . Our primary technique is adapted from Fairbanks’ procedure and utilizes
               bilateral, bipedicled mucosal advancement flaps developed endonasally to achieve complete defect closure
               on at least one side . An autologous interposition graft is placed as a third closure layer for repair support
                               [13]
               and durability.

               This study reviews the senior author’s bilateral flap and graft perforation repair technique and isolates for
               clinical analysis those patients with a perforation and a history of septoplasty or septorhinoplasty who
               underwent attempted closure. Repair failure rates between perforations of surgical and non-surgical etiology
               were compared. Surgical challenges potentially encountered when attempting a flap closure following prior
               septal surgery are discussed. Alternative management options and the objective measurement of perforation
               symptoms utilizing the NOSE-Perf scale are presented.


               METHODS
               This retrospective study of the senior author’s (S.F.B.) septal perforation repair experience was approved by
               the Mayo Clinic Institutional Review Board (IRB 19-0011700). Patients who underwent nasal mucosal
               bipedicled flap repairs from January 2003 through December 2022 were identified for medical record review
               and data collection. Repairs utilizing pedicled nasal flaps were excluded from this study. Patient
               demographics were determined and perforations resulting from septoplasty or septorhinoplasty grouped
               into a distinct cohort for analysis. Non-surgical perforation etiologies were combined to facilitate a
               comparative analysis of repair failure rates between surgical and non-surgical etiologies. Patients followed
               for at least four months postoperatively were included for data collection and analysis. All descriptive
               analyses and statistical comparisons were completed using SPSS software (version 28.0; IBM Corporation,
               Armonk, NY, USA). Pearson’s chi-square test statistics, with various contingency table dimensions, were
               used for between-group comparisons of prevalence (%), while two-sided independent sample t-test was
               used to compare continuous measures, where applicable. Type 1 error probabilities (P-values) are reported
               for differences below the conventional alpha level of 0.050.
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