Conventional Running Suture and Continuous Double Loop Closure: an Experimental Study of Wound Strength

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Abstract
To study the strength of laparotomy wounds closed by a continuous double loop technique or a conventional running suture, taking into account the ratio of suture length: wound length. Experimental study. 60 Sprague-Dawley rats. Midline laparotomy incisions were closed with either a conventional running suture or a continuous double loop. Wounds were allocated to closure with a suture length: wound length ratio of 3, 4 and 7. Bursting pressure, bursting volume and the way the suture cut through the tissues. With a suture length: wound length ratio of 3 or 4 bursting pressure and bursting volume were lower with a continuous double loop closure. A conventional running suture and a continuous double loop produced similar bursting pressure and bursting volume only if closure was with a ratio of 7. Wound bursting strength is higher with a conventional running suture than with a continuous double loop closure when the effect of the suture length: wound length ratio is accounted for.

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