Related Experiment Video
Updated: Jun 28, 2025
A Training and Testing System for Performing Vascular Reconstruction In Vitro
Published on: October 26, 2019
Security Comparison of Various Surgical Knots Using Nylon Suture
SooA Lim1, Dong Yun Lee, GyeongHyeon Doh
1At DongGuk University International Hospital, DongGuk University School of Medicine, Seoul, South Korea, SooA Lim, MD, PhD, is Associate Professor, Department of Plastic and Reconstructive Surgery; Dong Yun Lee, MD, is Chief Resident, Department of Plastic and Reconstructive Surgery; GyeongHyeon Doh, MD, is Resident, Department of Plastic and Reconstructive Surgery; YeongKwon Seo, PhD, is Professor, Department of Biosystems; ChiYeon Lim, PhD, is Professor, Department of Statistics; JungSoo Yoon, MD, PhD, is Assistant Professor, Department of Plastic and Reconstructive Surgery; and SuRak Eo, MD, PhD is Professor, Department of Plastic and Reconstructive Surgery.
The surgeon
Area of Science:
- Surgical techniques
- Materials science
- Biomedical engineering
Background:
- Surgical knots are critical for wound closure and device fixation.
- The mechanical properties of different surgical knotting techniques are not fully understood.
- Nylon sutures are commonly used in various surgical procedures.
Purpose of the Study:
- To compare the tensile strength of four common surgical knot techniques.
- To evaluate the performance of square, surgeon's, granny, and random knots.
- To assess knot strength across different nylon suture gauges.
Main Methods:
- Tested four knot types (square, surgeon's, granny, random) with three throws.
- Utilized four nylon suture gauges (4-0, 5-0, 6-0, 7-0).
- Measured elongation at yield and maximal force to break using a static pull machine.
Main Results:
- The surgeon's knot demonstrated superior elongation at yield across all nylon gauges.
- The surgeon's knot exhibited greater maximal force to break for 4-0, 5-0, and 6-0 nylon.
- Knot failure with 7-0 nylon was independent of knot technique.
Conclusions:
- The surgeon's knot is the strongest for 4-0, 5-0, and 6-0 nylon sutures.
- Knot technique is less critical for fine sutures like 7-0 nylon.
- Findings offer guidance for selecting appropriate surgical knots based on suture material.
