Table 1. Different dissection planes of nerve-sparing RARP; and their influence on safety margin and nerve-sparing quality.

Author	Dissection plane
	Safety margin to avoid positive surgical margin Low<---------------------------------------------------------------------------------->High
	Nerve-sparing quality Good<-------------------------------------------------------------------------------->Poor
Walz et al. [34]	Intrafascial			Interfascial		Extrafascial
Montorsi et al. [40]	Full nerve sparing		Partial nerve sparing		Minimal nerve sparing		Not applicable
Tewari et al. [45]	Grade 1		Grade 2		Grade 3		Grade 4
Schatloff et al. [55]	Grade 5	Grade 4		Grade 3		Grade 2		Grade 1

RARP, robot-assisted radical prostatectomy. Adapted from Walz J et al. Eur Urol 2016;70:301-11, with permission of Elsevier B.V. [34].