Novel clinical classification system for peripheral facial nerve defects after oncological resection.

Peripheral facial nerve defects resulting from oncological resection necessitate early repair, and underscore the need for accurate intraoperative assessment of their extent. This study proposes a span-based classification system for peripheral facial nerve defects, based on the length and location of the defect. The system delineates specific defect characteristics and provides practical guidance for intraoperative decision-making and personalised repair plans.