Various kinds of sutures are employed for bringing together and securing the edges of wounds during healing. The materials used for this purpose are chiefly flexible wire, catgut, silk, horse-hair, and silk-worm gut. Sutures are either interrupted or continuous. The interrupted variety is perhaps the most commonly employed in veterinary practice, and too frequently without due regard to the nature of the wound and the prospect of speedy union.

Interrupted or Simple Sutures are used more especially for wounds of irregular shape, or situated in positions difficult of access or in which there is tension. They are formed by threads passed from side to side through the lips of the wound and separately tied. Fig. 413 gives an example of this suture, showing the knot as it should be, lying well to one side of the incision.