The Microscopic Transcanal Approach in Stapes Surgery Revisited.

Mantokoudis, Georgios; Weder, Stefan; Anschuetz, Lukas; Gunser, Sandra; Borner, Urs; Caversaccio, Marco D (2022). The Microscopic Transcanal Approach in Stapes Surgery Revisited. Journal of visualized experiments(180) MYJoVE Corporation 10.3791/63011

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The microscopic transcanal (aka transmeatal) surgical approach was first described in the 60s, offering a minimally invasive means of reaching the external auditory canal, the middle ear, and epitympanon. Such an approach avoids a retroauricular or endaural skin incision; however, working through a narrow space needs angled microsurgical instruments and specific training in otologic surgery. The transcanal approach restricts the working space; however, it offers a binocular microscopic vision into the middle ear without extended skin incisions and thus, reducing post-operative pain and bleeding. In addition, this minimally invasive approach avoids scar tissue complications, hypoesthesia of the auricle, and potential protrusion of the pinna. Despite its numerous advantages, this method is still not routinely performed by otologic surgeons. Since this minimally invasive technique is more challenging, there is a need for extensive training in order for it to be widely adopted by otologic surgeons. This article provides step-by-step surgical instructions for stapes surgery and reports possible indications, pitfalls, and limitations using this microscopic transcanal technique.

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