A simple modification to add strength to the Roeder knot

H T Sharp; J H Dorsey; J D Chovan; P M Holtz

doi:10.1016/s1074-3804(96)80019-3

A simple modification to add strength to the Roeder knot

J Am Assoc Gynecol Laparosc. 1996 Feb;3(2):305-7. doi: 10.1016/s1074-3804(96)80019-3.

Authors

H T Sharp¹, J H Dorsey, J D Chovan, P M Holtz

Affiliation

¹ Department of Obstetrics and Gynecology, University of Utah School of Medicine, 50 North Medical Drive, Salt Lake City, UT 84132, USA.

PMID: 9050646
DOI: 10.1016/s1074-3804(96)80019-3

Abstract

The Roeder knot is commonly used during laparoscopic suturing because it may be tied extracorporeally and slid down to the target tissue with a single pass of a knot pusher. However, it is significantly weaker than extracorporeally tied knots with several throws. We compared the usual Roeder knot to one that was modified by adding a fourth loop around the standing end of the suture and a second half-hitch to the completed knot. The modified knot (26.6 newtons +/- 15.3) was significantly stronger (p <0.05) than the standard Roeder knot (18.0 newtons +/- 12.1). If a single-pass extracorporeal knot is to be used, we recommend a modified Roeder knot when ligating pedicles at laparoscopy.

MeSH terms

Humans
Laparoscopy*
Materials Testing
Suture Techniques*
Sutures*
Tensile Strength