Suturs and ligatures 5
WHAT ARE THE NON-ABSORBABLE LIGATURES AND SUTURES?
Non-absorbable sutures are not generally used in an infected
wound as they may cause sinus formation.
SILK
This material, generally white or black, is braided from
numerous fine strands of silk. It is supplied on sterilizable
spools 20 to 100 m (25 to 125 yds), or in multiple pre-cut
lengths ranging from 35 to 45 cm (14 to 18 in), and a single pre-
cut length of 1.8 m(72 in).
The sizes available are 0.4(8/0) (Virgin silk), and from 0.7
to 6(6/0 to 4) or even stronger. It is important to use serum-
proofed silk to reduce capillary attraction which is a
peculiarity of plaited or braided materials. Examples of theses
materials include D & G silk (Davis and Geck), Mersilk(Ethicon),
and Surgisilk(Surgicraft).
Alternatively, threaded needles can be autoclaved as
required for an operation.
USES
Silk can be used for approximation of soft tissues including skin
It can also be used for secure ligation of blood vessals.
LINEN
Origin from fibres of flax plant, it has a braided
construction, spun and twisted. Relatively pliant and easy to
handle. `Drags' through tissues, knots very securely. Evokes
minor to moderate tissue reaction. Gains strength on wetting.
USES
It is used as a general ligature where a strong firm tie is
essential.
COTTON
Origin from fibres of cotton bush and is braided is not as
strong as silk. Gains strength on wetting.
USES
It is used similar to silk.
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