Anastomotic false aneurysms occurred 8.2% in patients who were successfully implanted blood vessel prosthesis in our clinic since 1964. The occurrence in patients those were sutured with silk was 19.2% being higher than that of patients sutured with Dacron materials.
The experimental study which was implanting grafts with absorbable or nonabsorbable suture materials showed that when the arterial wall was healthy and there were no healing complications the tensil strength of suture material was under 15% of whole anastomotic strength. But in the presence of any healing complications, the strength of suture material was higher than 30% of whole anastomotic strength. If there are any pathologic changes in patients'arterial wall the suture line will be easily brocken down when the tensil strength of suture material declines.
