Yankton, SD 57078, USA.
Am J Surg. 2012 Sep;204(3):384-8. doi: 10.1016/j.amjsurg.2011.09.029. Epub 2012 Apr 10.
A previous study showed that running polypropylene sutures anchored with square knots retain only 75% of their strength compared with half hitches. The aim of this study was to investigate whether anchor knot geometry similarly affects the tensile strength of other types of sutures used in continuous closures.
Monofilament and multifilament sutures (all 3-0) were anchored with either square knots or half hitches to 1 tensionometer post, and the running ends were secured to the other. The force required to break the running suture and the site of suture failure were recorded.
The running sutures anchored with square knots retained only 50% to 84% of the strength of the identical sutures secured with half hitches (P < .001).
A running suture anchored with half hitches is stronger and safer in comparison with the same suture anchored with square knots. This study provokes a fundamental reconsideration of the use of square knots to anchor running sutures.
先前的一项研究表明，与半结相比，用方结固定的聚丙烯缝线在承受拉力时，其强度仅保留了 75%。本研究旨在探讨其他类型的连续缝合缝线的锚结几何形状是否同样会影响缝线的抗张强度。
单丝和多丝缝线（均为 3-0）分别用方结或半结固定在一个张力计柱上，缝线的游离端固定在另一个张力计柱上。记录缝线断裂时所需的拉力和缝线断裂的位置。
用方结固定的缝线的抗张强度仅为用半结固定的相同缝线的 50%至 84%（P<0.001）。
与用方结固定的缝线相比，用半结固定的缝线在强度和安全性方面更优。本研究促使人们对用方结固定连续缝线的方法进行重新考虑。
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