30.23% of intraoperative lithotomy cases (13/43) the stones were completely cleared after surgery (according to intraoperative surgeon assessement, postoperative ultrasonography and cholangiography), 48.84% of cases (21/43) over 80% of stones were removed, 4.65% of cases (2/43) about 50% of stones were removed and 16.27% cases (7/43) the quantity of stone removed was too small or nul.