More than 700.000 open abdominal surgeries (laparotomies) are performed each year in Germany (2). A major surgical complication after laparotomy is abdominal fascia dehiscence which might appear either as early (burst abdomen with evisceration) or as late complication (incisional hernia). These patients usually undergo surgery for secondary fascial closure associated with markedly increased morbidity (3) including high recurrence rates (up to 45%) (4). The applied surgical strategy of abdominal wall closure (i.e. the combination of suture technique and material) is of high relevance for prevention of fascia dehiscence and, moreover, constitutes the main factor directly controllable by the surgeon. While several randomized controlled trials (RCT) (3; 5-8) as well as meta-analyses (9-12) exist that address the issue of optimal fascia closure in elective laparotomies, there is no RCT dealing exclusively with the emergency setting. As a result abdominal fascia closure is performed according to the surgeon's individual preference rather than according to evidence-based data. Therefore, the present RCT is designed to compare the most established strategies (continuous slowly absorbable sutures and interrupted rapidly absorbable sutures) for abdominal wall closure in order to determine differences between both strategies after midline incisions.