Suture materials Flashcards
Function of suture
Hold tissue in apposition until wound healing progresses
4 suture properties
Tensile strength
Knot strength
Pliability
Capillarity
What is tensile strength
measurement of sutures ability to resist breakage
Larger size = increased TS
What is knot strength
amount of force necessary to cause a knot to slip or break
Knot is the weakest point
5 factors of knot strength
suture size suture material length of tags knot quality suture pattern
What is pliability
ease of handling - related to material and size
What is capillarity
fluid or bacteria is wicked along suture
allows infection to persist in suture
AVOID in infected tissue
Absorbable suture propeties
looses most of its tensile strength by 60days
Non absorbable suture properties
retains tensile strength for longer than 60 days
Suture coating
decreases tissue drag
increases pliability
Catgut properties
natural, absorbable
Twisted
inflammatory
short TS duration
Vicryl properties
braided, coated
- Rapid: degraded in 2 weeks (dentals)
- Plus: tricolsan coating (Abx), infected wounds
- Vicryl: degraded in infected urine, degraded in 14-21d(Ophthalmic sx)
Dexon properties
Braided multifilament
Rapidly degraded in infected urine
TS 14-21d
coated or uncoated
Monocryl properties
monofilament, absorbable
TS 7-14d
Uncoated or Abx coated
-non infected bladders or SC tissue
Caprosyn properties
absorbable monofilament
TS 14-21d
non infected bladders or SC tissue
Biosyn properties
monofilament absorbable
TS 21d
enerotomy, cystotomy, body wall, SC
Maxon properties
Monofilament absorbable
TS 6w
similar to PDS
PDS properties
Absorbable monofilament
50%TS 6m
similar to Maxon
Vicryl and dexon are what
Braided absorbable
Monocryl, caprosyn, biosyn, PDS, maxon are what
monofilament absorbable
Silk properties
Natural, non absorbable Braided INFLAMMATORY excellent handling CVS sx
Stainless steel properties
Natural, non absorbable Monofilament or twisted multifilament Highest TS, best knot security non inflammatory poor handling Orthopedic use
Prolene properties
Synthetic non absorbable monofilament very high TS low reactivity for prolonged strength - tendons, ligaments, joint capsules
Nylon Ethilon properties
synthetic non absorbable monofilament low reactivity high TS poor handling skin closure, orthopedic repair
Polymerized caprolactam vetafil properties
synthetic non absorbable
twisted multifilament
good handling
SKIN only
Polyester - ethibond properties
Synthetic non absorbable braided multifilament good TS coated high reactivity musculoskeletal sx
