Outcomes of interlay tympanoplasty: A prospective study in south eastern Rajasthan

Objective: To evaluate the success rate, hearing improvement, and complications of interlay tympanoplasty, where the graft is placed between the fibrous and mucosal layers of the tympanic membrane. Methods: This prospective study included 50 patients with inactive mucosal type of chronic otitis media having tympanic membrane perforation. All underwent interlay tympanoplasty, and outcomes were assessed at 3 and 6 months postoperatively. The primary outcome was the graft uptake rate, while secondary outcomes included hearing improvement and complications. Results: Graft uptake rate: 92% at 6 months. Hearing improvement: Pure-tone audiometry (PTA) showed an average improvement of 12 dB (p < 0.05). Complications: Residual perforation in 6%, transient otorrhea in 4%. No significant cases of lateralization or cholesteatoma were observed. Conclusion: Interlay tympanoplasty is a highly effective technique, particularly for anterior tympanic membrane perforations, providing a high graft success rate, significant audiometric improvement, and minimal complications.