title: A simple modification to add strength to the Roeder knot.
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.
authors.affiliation: Department of Obstetrics and Gynecology, University of Utah School of Medicine, 50 North Medical Drive, Salt Lake City, UT 84132, USA.
authors.forename: H T
authors.initials: HT
authors.lastname: Sharp
authors.forename: J H
authors.initials: JH
authors.lastname: Dorsey
authors.forename: J D
authors.initials: JD
authors.lastname: Chovan
authors.forename: P M
authors.initials: PM
authors.lastname: Holtz
mesh_terms: D006801:Humans; D010535:Laparoscopy; D008422:Materials Testing; D013536:Suture Techniques; D013537:Sutures; D013718:Tensile Strength