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Interrupted nylon stitches are a common technique in suturing, where the needle passes through the skin and is tied off after each pass. This method contrasts with running sutures, which feature continuous thread with knots at either end. Nylon is the preferred suture material due to its affordability, ease of handling, resistance to infection, and sufficient strength. Historically, silk and stainless steel were used more frequently, with silk providing secure knots but risking bacterial infection, and stainless steel offering high strength but being harder to handle.
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discussion • These are simple, interrupted nylon stitches. • Simple means that the needle passes down through the skin on one side and up on the other side. • Interrupted means that after each down and up, a knot get tied. By contrast, a running (aka continuous) suture would have a knot at each end and a long run of downs and ups, similar to a hem in clothing. • The suture material is nylon, which is the commonly used material for suturing skin. It is cheap, easily handled and tied, resistant to infection, and reasonably strong. • Silk and stainless steel sutures were used more often before the development of nylon. Silk handles well and ties a very secure knot. Because it is made of many fibers, its use risks infection because bacteria can hide among the fibers. • Stainless steel is difficult to handle and tie, but it is awesomely strong.
