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

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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

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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.

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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.

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CLASSIFICATION OF SUTURES ABSORBABLE

NONABSORBABLE

MONOFILAMENT

MULTIFILAMENT (BRAIDED)

SYNTHETIC

NATURAL

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ABSORPTION TERMINOLOGY (Absorbable Sutures) LOSS OF TENSILE STRENGTH

ABSORPTION OF MASS

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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

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Absorbable PGA Polyglactin 910 Polydiaxonone Polyglecaprolactone Catgut Non – Absorbable Nylon Silk Polypropelene

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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

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What are sutures and types of suture  

Explaining Types of sutures, suturing materials, characteristics of ideal sutures, factors to determine suture selection.

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