Surgery 811 PiloNidal Sinus Jeep bottom hair bottom pus boil discharge anus near Karydakis Bascom

3:16 Jack knife position , methylene blue 4:07 Open method - no recurrance Closed method - recurrance Limbert Rhomboid flap Karydakis flap - semilateral , elliptical flap Bascom flap - incision laterally, cover midline 7:00 revision