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Silk is the most commonly used organic nonabsorbable suture material (Fossum 2002; Roush 2003; Tan et al. 2003). It is a braided suture with excellent handling properties and knot security. Silk loses a significant amount of its tensile strength after extended implantation but is considered nonabsorbable because the material remains in the tissues for a significant amount of time. There is a 30% loss of tensile strength at 14 days and 50% loss at 1 year. Time for complete absorption is greater than 2 years. Silk leads to significant reaction in tissues, and the presence of silk suture can reduce the number of bacteria needed to induce an infection from 10⁶ to 10³ (Fossum 2002).