Mahar Andrew, Odell Tim, Thomas Walter, Pedowitz Robert
Department of Orthopaedics, Children's Hospital, San Diego, California 92123, USA.
Arthroscopy. 2007 Nov;23(11):1162-6. doi: 10.1016/j.arthro.2007.06.011.
To biomechanically compare a novel suture welding method to 2 standard suture materials when tied with 3 types of arthroscopic knots.
Sixty suture loops were tied with Weston, Roeder, and Duncan knots for both No. 2 FiberWire (FW) and No. 2 Ethibond (EB; 10 loops/group). Ten suture loops were created using a novel technique using No. 2 Nylon suture, with welding of the suture ends using sonic energy. All loops were created over the same dowel. Loops were cycled between 10N and 45N for 200 cycles, followed by a failure test. Loop elongation and ultimate failure load were compared between welded sutures and both materials using a 2-way analysis of variance.
There were no differences in loop elongation for the welded Nylon sutures compared to EB Roeder and EB Duncan knots, although EB Weston knots had significantly less loop elongation (P < .05). Loop elongation was significantly lower with FW than with EB (P < .001). For maximum failure load, there were no differences between the various EB loops. Welded loops demonstrated similar maximum failure loads to EB Roeder and EB Duncan knots, but were lower than EB Weston knots. Overall, the FW knots were significantly stronger than the EB groups (P < .001 for all comparisons).
A novel method to simplify the knot tying procedure by welding the suture ends demonstrated mechanical properties generally similar to No. 2 Ethibond. This method provides: (1) surgical advantages by eliminating knot tying; (2) a quick and easy locking mechanism; and (3) a low profile that eliminates high-profile knots. However, it is not clear whether the lower stiffness or the lower failure load may detract from these potential benefits compared to constructs with greater stiffness.
The suture welding technique generally behaved in a manner similar to that of Ethibond suture loops, although the difficulty of tying arthroscopic knots was eliminated.
当使用3种关节镜结打结时，对一种新型缝线焊接方法与2种标准缝线材料进行生物力学比较。
2号FiberWire（FW）和2号Ethibond（EB；每组10个线环）均使用韦斯顿结、罗德结和邓肯结打60个缝线线环。使用一种新技术，用2号尼龙缝线制作10个缝线线环，并用声能焊接缝线末端。所有线环均在同一销钉上制作。线环在10N至45N之间循环200次，然后进行失效测试。使用双向方差分析比较焊接缝线与两种材料之间的线环伸长率和极限失效载荷。
与EB罗德结和EB邓肯结相比，焊接尼龙缝线的线环伸长率没有差异，尽管EB韦斯顿结的线环伸长率明显更低（P < 0.05）。FW的线环伸长率明显低于EB（P < 0.001）。对于最大失效载荷，各种EB线环之间没有差异。焊接线环的最大失效载荷与EB罗德结和EB邓肯结相似，但低于EB韦斯顿结。总体而言，FW结明显比EB组更强（所有比较P < 0.001）。
一种通过焊接缝线末端简化打结程序的新方法，其力学性能通常与2号Ethibond相似。该方法具有以下优点：（1）通过消除打结提供手术优势；（2）快速简便的锁定机制；（3）低外形，消除了高外形结。然而，与具有更高刚度的结构相比，较低的刚度或较低的失效载荷是否会削弱这些潜在益处尚不清楚。
缝线焊接技术的表现通常与Ethibond缝线线环相似，尽管消除了关节镜结打结的难度。
