A general inquiry was made at surgical units and university clinics in Austria about the anastomosis techniques used between 1980 to 1985. The result was that in 90.3% the suture was made by hand and in 9.7% by machine. The first mentioned was performed as double row inverting suture by 66% of our surgeons, and only in 30% as an all-layer suture. The stapler-technique was mostly preferred for the oesophago-jejunostomy and the high and lower resection of the rectum. A leakage of the suture line was observed in 3.9% after sewing by hand and in 6.3% after stapling. The total lethality finally was 1.4% for hand made suture and 1.8% for apparative suture.