Optimization of tissue anchoring performance and mechanical properties of barbed sutures for flexor tendons repair
Optimization of tissue anchoring performance and mechanical properties of barbed sutures for flexor tendons repair作者机构：American University of Beirut Medical CenterBeirut 1107-2020Lebanon
出 版 物：《Plastic and Aesthetic Research》 (整形与美容研究（英文版）)
年 卷 期：2018年第5卷第4期
页 面：1-17页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Flexor tendon hand suture finger sheath pulley barb
摘 要：Aim: The ideal flexor tendon repair should be reliable, simple and strong enough without impairing the tendon healing. Based on these requirements, we have imagined the use of a single barbed intra-tendinous suture for stumps connection. The aim of our research is to quantify the stress that the suture and barbs should withstand in order to ensure perfect stumps connections. Methods: Seven different cross-section sutures were selected for the research study. One circular and 6 different elliptical shapes were defined according to the ratio of their minor and major axes (ρ = b/a). Barbs were designed with 3 different depths and 3 different cut angles. Thus, 9 different situations were considered for each suture geometry. Finally, 2 loading conditions were applied on each barb and tested in ANSYS Workbench using a finite element analysis technique. Results: Studies showed that a barbed suture with 0.18-mm depth, 150° cut angle and ρ = 3 produced the lowest stresses within the barb itself, while a barbed suture with 0.18-mm depth, 160° cut angle and ρ = 4 demonstrated lowest stress within the entire suture. Conclusion: The stress values in these two configurations are observed to be very close and both can fit a single barbed suture for tendon insertion and repair.
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