Purpose A classification for primary and incisional abdominal wall hernias is needed to allow comparison of publications and future studies on these hernias. It is important to know whether the populations described in different studies are comparable. Methods Several members of the EHS board and some invitees gathered for 2 days to discuss the development of an EHS classification for primary and incisional abdominal wall hernias. Results To distinguish primary and incisional abdominal wall hernias, a separate classification based on localisation and size as the major risk factors was proposed. Further data are needed to define the optimal size variable for classification of incisional hernias in order to distinguish subgroups with differences in outcome. Conclusions A classification for primary abdominal wall hernias and a division into subgroups for incisional Hernia (2009) 13:407-414 DOI 10.1007 abdominal wall hernias, concerning the localisation of the hernia, was formulated.

After reviewing the available classifications for groin hernias, the European Hernia Society (EHS) proposes an easy and simple classification based on the Aachen classification. The EHS will promote the general and systematic use of this classification for intraoperative description of the type of hernia and to increase the comparison of results in the literature.

Fibrin sealant for mesh fixation in Lichtenstein repair of small-medium sized inguinal hernias is well tolerated and reduces the rate of pain/numbness/groin discomfort by 45% relative to sutures without increasing hernia recurrence (NCT00306839).

TIMELI is a major international trial that will provide important information on the efficacy and safety of Tissucol, compared with sutures, for mesh fixation in patients undergoing Lichtenstein technique for primary inguinal hernia repair.

According to the European Hernia Society groin hernia classiWcation a type 3 hernia is larger than 2 Wngers and not restricted to ¸3 Wngers as now mentioned in the publication. Therefore the text should be read as follows: As can be seen in Table 2, the size of the hernia oriWce is registered as 1 (•1 Wnger), 2 (1¡2 Wngers) and 3 (>2 Wngers).