Trans-canal tragal cartilage myringoplasty; a comparative analysis of endoscopic and microscopic approaches

Abstract

Background: The advent of Endoscopic Ear Surgery (EES) has allowed otologists an improved view of the surgical field compared with conventional Microscopic Ear Surgery (MES). EES presents different challenges for surgeons and a learning curve is necessary.

Aims: The purpose of this study was to compare the efficacy of EES and MES for trans-canal tragal cartilage myringoplasty, an entry level EES.

Methods: We retrospectively analysed patients who underwent push through trans-canal tragal cartilage myringoplasty in our institution over 5 years (2016-2020). Exclusion criteria were: patients with prior ear surgery, non-tragal cartilage tympanic membrane graft, additional procedure at time of surgery and patients with insufficient follow up. EES and MES groups were compared using outcomes such as graft success rate, changes in pure tone audiometry (PTA), operative time and complications.

Results: Seventy-four patients met inclusion criteria (MES = 38, EES = 36). Mean age of included patients was 29.3 years with no significant demographic differences between groups. Graft success rate at 12 months was higher among the EES group versus MES (94.4% v 86.8%, p = 0.43). Mean operative time was reduced in the EES group (47.3 min v 53.8 min, p = 0.04). Hearing outcomes did not differ significantly between groups. No major operative complications occurred in either group.

Conclusions: Outcomes were marginally better in the cohort who underwent EES. This supports that EES offers an otologic choice to complement established practice for trans-canal myringoplasty and may be used to facilitate introduction to EES for trainees and otologists wishing to learn this technique.

Keywords: Endoscopic; Microscopic; Myringoplasty; Tragal-cartilage; Trans-canal.