Is no de-squamatization of the TM reliable for cartilage over-underlay myringoplasty without external auditory canal packing?

Abstract

ObjectiveWe evaluated the graft and hearing outcomes of patients with chronic perforations treated via the cartilage-perichondrium over-underlay technique without de-squamatization of the TM and external auditory canal (EAC) packing. Materials and methodsThirty-nine patients with chronic perforations and residual tympanic membranes around the perforation margins were treated using the cartilage-perichondrium over-underlay technique without de-squamatization of the TM and EAC packing. Patients were followed-up for 6 months. ResultsFor all 39 patients with unilateral perforations, the graft success rate was 100% (39/39) at 6 months after surgery. The mean air–bone gap significantly (P < 0.05) improved from 13.41 ± 8.34 dB preoperatively to 7.45 ± 3.81 dB postoperatively in patients with small and medium perforations; the mean air–bone gap significantly improved from 20.57 ± 9.41 dB preoperatively to 9.84 ± 2.41 dB postoperatively in patients with large perforations. The lateral perichondrium gradually became necrotic and crust at postoperative 2–3 months and migrated into the EAC in all patients. ConclusionsThe cartilage-perichondrium over-underlay myringoplasty without de-squamatization of the TM and EAC packing is feasible, affording a high graft success rate and good hearing improvement. The lateral perichondrium may gradually become necrotic and crusted, and migrate along the EAC over time.