<qa>  What is the name of the surgical procedure that was introduced for all surgeons?Low rectal cancer treated by abdominoperineal resection APR, rectal amputationhas worse prognosis than other rectal cancers, both regarding local recurrence and cancer specific survival. With a view to improve local recurrence rates a more extensive perineal operation excision of the levator muscle has been suggested. In our university hospital thie technique was introduced for all surgeons January 2007. A population of all patients operated from 1 January 2007 to 31 December 2009 was compared to all patients operated from 1 January 2004 to 31 December 2006 using the traditional, less extensive method, in all a six year period and 158 patients. 