Which suture material is described as strong and slippery, potentially leading to knot slippage?

Study for the NPLEX II Minor Surgery Test. Prepare with flashcards and multiple-choice questions, offering hints and explanations for each task. Master your exam confidently!

Multiple Choice

Which suture material is described as strong and slippery, potentially leading to knot slippage?

Explanation:
A knot’s security depends on friction between the strands. A material that is strong but very smooth doesn’t grip well, so knots can slip under tension even if the suture itself doesn’t break. Nylon is a strong monofilament that is notably slippery, so it’s prone to knot slippage if you don’t use enough throws or a knot designed for slippery strands. Silk, being braided, provides more surface friction and resists slipping. Catgut is weaker and absorbable, so slippage isn’t its defining issue. Polypropylene is also slippery, but nylon’s combination of high strength and inherent slipperiness is the classic example that leads to knot slippage if not secured properly. Use additional throws or a more secure knot when working with nylon.

A knot’s security depends on friction between the strands. A material that is strong but very smooth doesn’t grip well, so knots can slip under tension even if the suture itself doesn’t break. Nylon is a strong monofilament that is notably slippery, so it’s prone to knot slippage if you don’t use enough throws or a knot designed for slippery strands. Silk, being braided, provides more surface friction and resists slipping. Catgut is weaker and absorbable, so slippage isn’t its defining issue. Polypropylene is also slippery, but nylon’s combination of high strength and inherent slipperiness is the classic example that leads to knot slippage if not secured properly. Use additional throws or a more secure knot when working with nylon.

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