Abd El-Aziz Manar Y, Elgohary Doaa H, Abo El Amaim Y A, Hassan Elham A
Clothing and Knitting Industrial Research Department, Textile Research and Technology Institute, National Research Centre, 33 EL Bohouth St. (former EL Tahrir St.)- Dokki, Giza, 12622, Egypt.
Spinning and Weaving Engineering Department, Textile Research and Technology Institute, National Research Centre, 33 EL Bohouth St. (former EL Tahrir St.)- Dokki, Giza, 12622, Egypt.
J Orthop Surg Res. 2025 May 30;20(1):545. doi: 10.1186/s13018-025-05947-1.
Acute tendon cut represents a great challenge both in human and veterinary medical practice. The current study aimed to compare the ultimate biomechanical properties (tensile strength, elongation, stress load, yield load and break load) of double strand, braided and knitted polyethylene suture in an ex vivo model of acute transverse section of the Achilles tendon in dog model using locking loop suture and three-loop pulley suture.
A-thirty-six Achilles tendon was transected from 18 dog cadavers. Tendon samples were randomly allocated (6 tendons/group) to be sutured either by double strand, braided and novel knitted formation techniques from polyethylene suture using either three-loop pulley suture or locking loop suture patterns. Biomechanical testing of different yarn for tensile strength, elongation, stress, yield load, break load was performed.
Braided polyethylene sutures demonstrated superior biomechanical properties, showing the highest maximum tension, load, stress, and yield load, while knitted sutures exhibited the greatest strain and elongation due to their looped structure. Despite the knitted yarn's high elongation, its tensile strength and load-bearing capabilities were significantly lower. Overall, yarn formation had a greater influence on biomechanical performance in association with suturing technique. The three-loop pulley suturing demonstrated significantly improved suturing outcomes.
Both novel knitted, and braided suture structure demonstrated improved biomechanical properties of tendon suturing by increasing the number of strands within the tendon, simplifying the suturing process, reducing the needle passes, and minimizing tendon punctures that may interfere with healing and the overall strength. Suturing technique had a major influence on the biomechanical properties where the three-loop pulley suture demonstrated superior biomechanical properties compared to locking loop suturing.
急性肌腱切断在人类和兽医医学实践中都是一项巨大挑战。本研究旨在使用锁环缝合和三环滑轮缝合，在犬模型跟腱急性横断的体外模型中，比较双链、编织和针织聚乙烯缝线的极限生物力学性能（拉伸强度、伸长率、应力负荷、屈服负荷和断裂负荷）。
从18只犬尸体上切断36条跟腱。将肌腱样本随机分配（每组6条肌腱），使用三环滑轮缝合或锁环缝合模式，通过双链、编织和新型针织成型技术用聚乙烯缝线进行缝合。对不同缝线进行拉伸强度、伸长率、应力、屈服负荷、断裂负荷的生物力学测试。
编织聚乙烯缝线表现出卓越的生物力学性能，显示出最高的最大张力、负荷、应力和屈服负荷，而针织缝线由于其环状结构表现出最大的应变和伸长率。尽管针织缝线伸长率高，但其拉伸强度和承重能力显著较低。总体而言，缝线成型与缝合技术相关联，对生物力学性能有更大影响。三环滑轮缝合显示出显著改善的缝合效果。
新型针织和编织缝线结构均通过增加肌腱内的股数、简化缝合过程、减少进针次数以及最小化可能干扰愈合和整体强度的肌腱穿刺，表现出改善的肌腱缝合生物力学性能。缝合技术对生物力学性能有重大影响，其中三环滑轮缝合相比锁环缝合表现出卓越的生物力学性能。
