We asked whether intraoperative use of imageless navigation ( @ ) improves the relative accuracy of leg length and global and femoral offset restoration ; ( @ ) increases the absolute precision of leg length and global and femoral offset equalization ; and ( @ ) reduces outliers in a reconstruction zone of @ mm for leg length and global and femoral offset restoration compared with intraoperative fluoroscopy during minimally invasive ( MIS ) THA with the patient in a lateral decubitus position .