Haddad R, Peltz T, Bertollo N, Walsh W R, Nicklin S
Surgical & Orthopaedic Research Laboratories, University of New South Wales, Prince of Wales Hospital, Sydney, New South Wales, Australia.
Surgical & Orthopaedic Research Laboratories, University of New South Wales, Prince of Wales Hospital, Sydney, New South Wales, Australia
J Hand Surg Eur Vol. 2015 Mar;40(3):234-8. doi: 10.1177/1753193413516245.
Multiple-strand repair techniques are commonly used to repair cut flexor tendons to achieve initial biomechanical strength. Looped sutures achieve multiple strands with fewer passes and less technical complexity. Their biomechanical performance in comparison with an equivalent repair using a single-stranded suture is uncertain. This study examined the mechanical properties of double-stranded loops of 3-0 and 4-0 braided polyester (Ticron) and polypropylene monofilament (Prolene). Double loops were generally less than twice the strength of a single loop. Ticron and Prolene had the same strengths, but Ticron was stiffer. The 4-0 double loops had significantly higher stiffness than 3-0 single loops. Increasing the size of sutures had a larger relative effect on strength than using a double-stranded suture. However, a double-strand loop had a larger effect on increasing stiffness than using a single suture of a larger equivalent size. Looped suture repairs should be compared with standard techniques using a thicker single suture.
多股修复技术通常用于修复切割的屈肌腱，以实现初始生物力学强度。环形缝线用较少的穿刺次数和较低的技术复杂性实现多股。与使用单股缝线的等效修复相比，其生物力学性能尚不确定。本研究检测了3-0和4-0编织聚酯（Ticron）和聚丙烯单丝（Prolene）的双股环的力学性能。双环的强度通常不到单环的两倍。Ticron和Prolene具有相同的强度，但Ticron更硬。4-0双环比3-0单环具有显著更高的刚度。增加缝线尺寸对强度的相对影响比使用双股缝线更大。然而，双股环在增加刚度方面的作用比使用更大等效尺寸的单根缝线更大。环形缝线修复应与使用较粗单根缝线的标准技术进行比较。
