Non-absorbable Sutures


(eg. prolene)

(eg. Mersilene)
 Types *monofilaments
2 types of fine silk sutures:

*virgin silk 
(fibrin coated by sericin)

*braided silk 
(degummed ie sericin is

 Both are multifilaments


  also available as


Tissue reaction



Tensile strength
*high, losing 10 to 15% of 
strength per year

*moderate, lasting 3
to 6 months

*high, maintain strength 
for over 2 years

*high, permanent
Other characteristics *mild elasticity

*stiff suture ends which 
   must be buried to avoid 


*suture ends soft and 
   therefore  well-tolerated

*most elastic suture materials

*stiff suture ends and irritate 
   if not buried

*strongest monofilament
   and less elasticity than 
other monofilaments
Indications *most widely suture for
  corneal wound sutures
*rarely used to close corneal
  wound sutures but often
  used as stay sutures.
* used mainly in iris repair
   and intraocular lens fixation
*prefer by some surgeons
  for its low elasticity and
  high tensile strength

   Advantages of monofilament over multifilament :
   1. monofilament provides easy passage through the tissue whereas multifilament tend sto provide tissue drag
   2. the smooth surface of monofilament does not support bacterial growth whereas multifilament provide a nidus for infection

magnified view of monofilament magnified view of multifilament

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