Which factor is most closely associated with knot security in laparoscopic suturing?

Which factor is most closely associated with knot security in laparoscopic suturing?

• A. Even distribution of tension around tissue edge via circumferential bite.
• B. Knot color.
• C. Suture brand.
• D. Time to tie.

Answer: (A)

The most important factor is how the tightening force is distributed across the tissue, which is achieved by a circumferential bite around the tissue edge. When the bite encircles the edge, the load from the tightened knot is spread over a larger area, increasing friction between the suture and tissue and reducing the risk of the knot slipping or the tissue tearing through. This balanced, circumferential capture maintains tissue approximation under load, which is crucial in laparoscopic surgery where tactile feedback is limited and precise control is essential.

Other factors such as knot color are cosmetic and do not affect strength. Suture brand can influence material properties, but without proper circumferential capture, knot security remains compromised. Time to tie matters less than how the tissue is captured and loaded when the knot is tightened.