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An alternative method of open anastomosis for large intestine involves the method of triangulation using three separate staple lines. It is particularly useful in colocolostomy anastomoses as in left-sided colectomies since it does not require rotation of the mesentery.

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The section of the bowel to be excised is isolated with Kocher clamps while thin straight clamps, such as Glassman clamps, are placed transversely on the colon (Figure 1). Several inches beyond these, noncrushing Scudder or rubber-shod clamps are applied to prevent gross contamination. The specimen is excised between the Kocher and straight clamps. The field is walled off with laparotomy pads and the clamps are opened. Obvious bleeding points are controlled with fine ligatures. The two limbs of open bowel are brought in approximation with correct mesentery-to-mesentery alignment (Figure 2). The mesenteric opening is closed with interrupted fine silk sutures (Figure 3). Anterior and posterior traction sutures (A and B) are placed halfway between the mesentery and antimesenteric borders. The full thickness of bowel wall along the mesenteric border is aligned with several through-and-through traction sutures or a row of Allis clamps (Figure 4). The non cutting linear stapler (TL 60) is positioned transversely below the Allises and traction sutures (Figure 5). This ensures inclusion of all bowel wall in the deep staple line. After discharging the stapling instrument, the excess tissue is cut from above the instrument jaws while preserving the traction sutures on either end (Figure 6).

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A bisecting third traction suture (C) is placed through each stoma in a position corresponding to the apex of the antimesenteric border (Figure 7). The open jaws of the non cutting linear stapler (TL 60) are positioned for the second side of the triangle using traction suture (B) to elevate the end of the posterior staple line within ...

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