Data is collected preoperatively with a case report form (CRF) including detailed health information about the patient. During the surgery, femoral artery access and wound closure time is measured separately for each side (in minutes). Material costs are also documented separately for each side (in €). Postoperative data about wound healing and pain of each inguinal side are collected descriptive using the CRF. Data management and analysis is anonymous using random patient numbers on the forms.