What are sutures and Types of Sutures

1. What is Suture? Suture is a strand used to ligate the blood vessels and approximate the tissues. www.sutures.in

2. THE IDEAL SUTURE An ideal suture must have following properties: Use for any procedure Easy to Handle Minimal Tissue Reaction High Breaking Strength Holds Knot Securely Absorbable Predictable Absorption Sterile www.sutures.in

3. Characteristics of Sutures • Absorbable • Breaking strength – Limit of tensile strength at which suture breaks • Capillarity – Extent to which body fluid absorbed in the body • Elasticity- Measure of the ability of the material to gain its original form after deformation (Silk) • Knot strength – Amount of force necessary to cause a knot to slip • Memory – Inherent capability of suture to return to or to maintain its original gross shape – Polypropylene • Plasticity – Measure of the ability to deform without breaking and to maintain a new form after relief of the deforming force - polypropylene • Pliability – Ease of Handling • Tensile strength – Amount of tension or pull the suture can withstand before it breaks • Wound breaking strength – Limit of tensile strength of healing wound at which separation wound edge occurs. www.sutures.in

4. Suture size Size refers to the diameter of the suture strand. The more zeroes characterizing a suture size, the smaller the resultant strand diameter (eg, 4-0 or 0000 is larger than 5-0 or 00000). The smaller the suture, the less tensile strength of the strand. www.sutures.in

5. CLASSIFICATION OF SUTURES www.sutures.in

6. ABSORPTION TERMINOLOGY(Absorbable Sutures) • LOSS OF TENSILE STRENGTH • ABSORPTION OF MASS www.sutures.in

7. Loss of Tensile Strength Definition • Tensile Strength retention refers to the amount of strength “INVIVO” that a suture material has retained. • This can be measured in days and as a percentage of original strength • Loss of Tensile strength can take place without any visible loss of suture bulk www.sutures.in

8. Absorbable PGA Polyglactin 910 Polydiaxonone Polyglecaprolactone Catgut Non – Absorbable Nylon Silk Polypropelene www.sutures.in

9. Factors that determine suture selection • Surgeons familiarity with the suture • Physical & biological characteristics of the suture • Healing characteristics of the tissue in which it is placed • Presence of infection or contamination • Patients age, weight and status of health and expected postoperative course of the patient • Cosmetic results www.sutures.in

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