TIE KNOTS THE FUN AND EASY WAY
Better to know a knot and not need it, than need a knot and not know it.
Grog's Index of Surgical Knots
Surgical Index Surgical Options
Surgical Tie, One Hand Ligature, One Hand Surgical Tie, Two Hand Ligature, Two Hand Surgical Tie, Instrument Ligature, Instrument Surgical Slip Tie Constrictor, Instrument Constrictor Retrieving End Constrictor Tied Around Constrictor Slid Down
Find a Knot by Name Knot Terminology Knot & Rope Safety Rope Properties Contact
Instructions: Move the mouse over each knot. Look at the description to find out what it can be used for. Click on the knot you wish to see. On the new page wait until the selected knot starts to tie itself.
Welcome to Surgical Knots
Introduction: We use "Surgical Tie" for Square (Reef) knots tied with single throws. We follow Ashley's convention and use the name "Ligature" for a Square Knot tied with a double throw in the first part, but we also use Ligature for other knots used for the same purpose.
Surgical knots themselves are unremarkable. Technique sets them apart: hand-tying techniques maintain tension during the tying process; instrument techniques are required in inaccessible situations.
Names: Hand tying techniques are commonly described as "One-Handed" or "Two-Handed" – slightly confusing because both techniques involve two hands. We introduce the names "Push" and "Pull" based on the way that the end is guided through each knot.
Techniques Selected: An expert ties a surgical knot so rapidly that it is hard to visualize. Videos and manuals show many variations. The techniques selected for these animations are those that require the minimum number of separate movements. Each one can be flipped to suit both right-handed and left-handed operators. In addition each animation can be inverted to help an instructor guide a student sitting across a table.
Practical Considerations: The completed surgical knot may be out of sight. So, the technique may create the intended Square (Reef) knot or it may create an unintended stack of Half Hitches. This partly explains the custom of adding multiple extra Half Knots.
Constrictor as Ligature: A literature search indicates that the Constrictor has not previously been described or evaluated for use in surgery. Our research confirms that the Constrictor out-performs other iigature knots.*
*Paper accepted for publication (Authors: Howard Taylor and Alan Grogono).
Disclaimer: Any activity that involves ropes is potentially hazardous. Lives may be at risk - possibly your own. Considerable attention and effort have been made to ensure that these descriptions are accurate. However, many critical factors cannot be controlled, including: the choice of materials; the age, size, and condition of ropes; and the accuracy with which these descriptions have been followed. No responsibility is accepted for incidents arising from the use of this material.