Small tissue bites and wound strength: an experimental study.
OBJECTIVE
Placing stitches close to the cut wound edge does not produce low wound bursting strength in midline laparotomy incisions closed with a suture length:wound length ratio of 4.


METHODS
Experimental study in rats.


METHODS
Midline incisions were closed with a running suture in 51 Sprague-Dawley rats. A suture length:wound length ratio of 4 was used and stitches were placed at a distance of 3, 6, or 10 mm from the wound edge. Wound bursting strength was studied immediately after and 4 days after wound closure.


RESULTS
Immediately after wound closure, bursting pressure was higher with stitches placed 10 mm from the wound edge than those at a distance of 3 mm. After 4 days, bursting pressure and bursting volume were lower with stitches placed 10 mm from the wound edge than those at a distance of 3 or 6 mm. The abdominal wall ruptured outside the suture line in 14 of 17 wounds closed with 21 stitches, in 11 of 17 wounds closed with 16 stitches, and in 6 of 17 wounds closed with 11 stitches (P=.02).


CONCLUSIONS
Four days after closure of midline laparotomy incisions using a suture length-wound length ratio of 4, wound bursting strength is higher with stitches placed 3 to 6 mm from the wound edge than those at a distance of 10 mm. Wound bursting strength increases with the number of stitches used.
Department of Surgery, Sundsvall County Hospital, SE-85186 Sundsvall, Sweden. y.cengiz@swipnet.se
Y
Y
Cengiz
P
P
Blomquist
L A
LA
Israelsson
D000009:Abdominal Muscles / Q000503:physiopathology / Q000601:surgery; D000818:Animals; D001696:Biomechanical Phenomena; D005260:Female; D051381:Rats; D017207:Rats, Sprague-Dawley; D013529:Surgical Wound Dehiscence / Q000503:physiopathology*; D013536:Suture Techniques; D014945:Wound Healing / Q000502:physiology*