Comparison of modified limberg flap and modified elliptical rotation flap for pilonidal sinus surgery: a retrospective cohort study.

•Elliptical rotation flap was used by nessar et al. and the weak points of the technique were described.•Modified elliptical rotation flap technique and its advantages and superiority over elliptical rotation flap was described.•The study showed that modified elliptical rotation flap technique is a feasible and effective procedure for pilonidal sinus disease.