The distinctive feature of a Surgical Tie Knot is that. Techniques: In the One-Hand technique the end of the suture is Pulled through to form the knot. This study suggests that, when using looped suture, tying 2 independent knots instead of tying a single knot does not increase the strength of the flexor tendon repair.įlexor tendon repair core suture flexor tendon laceration looped suture repair rupture.Ĭopyright © 2016 American Society for Surgery of the Hand. Uses: The Surgical Tie Knot is a Square (Reef) Knot (ABOK 460, p 75.) It is widely used in surgery although less secure than the Ligature Knot, which starts with an initial Double Throw Knot. Our hypothesis was disproved by the results of this study. The average number of cycles and force in cyclic testing that caused failure of flexor tendon repairs was 134 cycles and 31 N for tendons repaired with looped 3-0 suture tied with 1 knot and 94 cycles and 33 N for tendons repaired with looped 3-0 suture tied with 2 knots. consistent and secure knot than hand-tied knots. The mode of failure of 15 of the flexor tendon repairs that were cyclically loaded to failure was suture pull-out. The average force at failure was 43 N for the 1-knot repair and 28 N for the 2-knot repair. Background Training of basic laparoscopic psychomotor skills improves both acquisition and retention of more advanced laparoscopic tasks, such as laparoscopic intra-corporeal knot tying (LICK). The repaired flexor tendons were fixed in a servohydraulic material testing system and were loaded to failure either with uniaxial tension or cyclically. The harvested tendons were randomly assigned and repaired with either a 1- or a 2-knot construct. The tendons were repaired with a 4-strand core suture repair using 3-0 looped nonabsorbable nylon suture. Thirty-two flexor tendons were harvested and were sharply transected in zone II. We hypothesized that, after passing the intact looped suture in the desired repair configuration, splitting the loop and tying 2 independent knots would increase the strength of flexor tendon repair. To assess the strength of flexor tendon repair with looped suture.

Surgery knot tying 2 hand