Identification of the ilioinguinal and iliohypogastric nerves during open inguinal hernia repair: a nationwide register-based study.

The Ilioinguinal nerve was recognized in 73% of cases, while the iliohypogastric nerve was recognized in 66% with almost all identified nerves being spared during surgery. Several pre- and intraoperative factors influenced identification rates of the ilioinguinal and iliohypogastric nerve.