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Am J Obstet Gynecol. 2004 Nov;191(5):1618-20.

The effect of number of throws on knot security with nonidentical sliding knots.

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  • 1Division of Gynecologic Pelvic Surgery, Department of Obstetrics and Gynecology, Louisiana State University Health Sciences Center, Shreveport, LA, USA.

Abstract

OBJECTIVE:

The study was undertaken to test the integrity of nonidentical sliding knots made with 3 throws compared with those made with 6 throws with monofilament and braided absorbable suture.

STUDY DESIGN:

The 3 throw nonidentical sliding knot was compared with the 6 throw nonidentical sliding knot in 4 different suture groups. The groups were 0-0 polydioxanone, 2-0 polydioxanone, 0-0 polyglactin 910, and 2-0 polyglactin 910. Knots were tested to failure with a tensiometer. The proportion of 3 throw knots becoming untied was compared with the 6 throw knot within each group. Ultimate load required to break tied knots within each suture group was also evaluated.

RESULTS:

The 3 throw knots had very high rates of knot failure and untied significantly more often than the 6 throw knots.

CONCLUSION:

The 6 throw nonidentical sliding knot demonstrates superior knot integrity compared with the 3 throw knot with both monofilament and braided absorbable suture.

PMID:
15547532
[PubMed - indexed for MEDLINE]
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