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Related Experiment Videos

Laparoscopic knot security

J D Sedlack1, V M Williams, J DeSimone

  • 1Department of Surgery, National Naval Medical Center, Bethesda, MD 20886, USA.

Surgical Laparoscopy & Endoscopy
|April 1, 1996
PubMed
Summary
This summary is machine-generated.

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Laparoscopic square knots are as secure as open square knots. Silk sutures and Roeder

Area of Science:

  • Surgical techniques
  • Biomaterials science
  • Mechanical engineering

Background:

  • Optimizing suture and knot selection is crucial for advanced laparoscopic procedures.
  • Understanding the security of various knot types and suture materials is essential for surgical safety.

Purpose of the Study:

  • To evaluate and compare the security of different laparoscopic and open surgical knots.
  • To assess the performance of various suture materials in conjunction with different knot types.

Main Methods:

  • Tested six knot types and five suture materials (2-0 size) using a pelvic trainer.
  • Applied gradual stress using a tensiometer to determine knot slippage or suture breakage.
  • Analyzed data using analysis of variance to compare knot security and stress resistance.

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Main Results:

  • Laparoscopic square knots demonstrated comparable security to open square knots.
  • No significant difference in security was found between extracorporeal and intracorporeal knots for Dacron, polypropylene, and ePTFE, except for ePTFE intracorporeal knots.
  • Silk suture was significantly less secure than other tested sutures across all knot types.
  • Roeder's and Fisherman's knots were the least secure laparoscopic knots.

Conclusions:

  • Well-tied laparoscopic square knots offer security comparable to traditional open square knots.
  • Permanent suture materials generally exhibit similar security in intracorporeal and extracorporeal laparoscopic knots.
  • Silk is less secure than other permanent suture materials, and certain knot types (Roeder's, Fisherman's) compromise security.