滑结：可调节缝线斜视手术中使用的结的比较

Slipping the knot: a comparison of knots used in adjustable suture strabismus surgery.

作者信息

Miller Kyle E, Kinori Michael, Robbins Shira L, McClatchey Scott K, Granet David B

机构信息

Anne and Abraham Ratner Children's Eye Center at the University of California San Diego, Shiley Eye Institute, La Jolla, California; Department of Ophthalmology, Naval Medical Center San Diego, California.

Anne and Abraham Ratner Children's Eye Center at the University of California San Diego, Shiley Eye Institute, La Jolla, California.

出版信息

J AAPOS. 2015 Dec;19(6):496-9. doi: 10.1016/j.jaapos.2015.08.010.

DOI:10.1016/j.jaapos.2015.08.010

PMID:26691026

Abstract

PURPOSE

To evaluate the frictional force created by different knots used in adjustable suture strabismus surgery.

METHODS

To allow the simulation of strabismus surgery suture tying methods a model using 6-0 polyglactin 910 suture was created. Three different knots were evaluated: (1) the sliding noose knot with a double wrap of suture, (2) the cinch knot with a single throw on both sides of the pole suture, (2) and a single-throw square knot. (Bow-tie knots were not included.) A digital force meter was used to measure the force (gram-force [gf]) required to overcome the static friction created by the knot. Each simulation was repeated with new suture material 5 times and the force required after subsequent repositioning was also recorded.

RESULTS

The force to overcome static friction of the sliding noose knot was 240 gf [95% CI, 187-284 gf]; of the cinch knot, 150 gf [95% CI, 123-167 gf]; and of the square knot, 110 gf [95% CI, 95-121 gf]. Subsequent movement of each knot along the same suture required progressively less force, with the sliding noose maintaining the most static friction.

CONCLUSIONS

The sliding noose knot generates the most frictional force and also maintains the most friction after subsequent repositioning. Important consideration should be given to multiple repositioning movements, because the force required for each subsequent repositioning decreases.

摘要

目的

评估可调缝线斜视手术中不同打结方式产生的摩擦力。

方法

为模拟斜视手术的缝线打结方法，创建了一个使用6-0聚乙醇酸910缝线的模型。评估了三种不同的结：（1）双股缝线的滑套结，（2）在极缝线两侧单次投掷的收紧结，（2）和单掷方结。（不包括领结结。）使用数字测力计测量克服结产生的静摩擦力所需的力（克力[gf]）。每次模拟用新的缝线材料重复5次，并记录后续重新定位后所需的力。