E shaver, in an effort to allow the fast removal with the curetted tissue.80 The amount of rotations per minute with the inner cannula varies in various studies. Lee et al (2005)72 indicate that the system ought to be adjusted to preserve the inner cannula at 1500 rpm, inside the oscillatory mode. Wu et al (2009)80 used it at 2500rpm, whilst Chern et al (2010)74 would rather have it at 500 rpm. Ar