The crural hernia containing an inflamed appendix is a rare entity and must be considered a variant of the hernia first described in 1735 by Claudius Amyand. This hernia is rarely recognised and diagnosed before the surgical treatment because it is often confused with a strangled hernia. In spite of this, the clinical presentation seems to follow a well determined pathway, so is possible to argue that the uncorrect diagnosis is to be attributed to the ignorance of this hernia. We report a case of Amyand’s crural hernia in a woman 57 years old. The base of the appendix was not inflamed and, according to this, we made an appendectomy. We closed the hernia defect without the use of a synthetic mesh. The post operative period was regular and free of complications.