Department of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut 06034, USA.
Arthroscopy. 2012 May;28(5):642-8. doi: 10.1016/j.arthro.2011.10.024. Epub 2012 Feb 1.
To evaluate the biomechanical performance of an all-soft suture anchor (JuggerKnot; Biomet, Warsaw, IN) in comparison with a classic solid suture anchor (2.4-mm biocomposite SutureTak; Arthrex, Naples, FL) in an in vitro labral repair model.
We dissected 12 cadaveric shoulders (mean age, 61 ± 9.4 years), leaving the labrum intact, and bone mineral density was obtained (mean, 0.375 ± 0.06 g/cm(3)). Simulated labral tears were made at the anteroinferior and posteroinferior edges of the labrum. Repairs used 2 all-soft suture anchors (JuggerKnot) or 2 solid anchors with free, high-strength No. 2 suture (FiberWire; Arthrex) spanning the operative construct to load the repair. Differential variable reluctance transducers were used to measure labral displacement for each specimen. The testing protocol consisted of a preconditioning phase at 10 N for 10 cycles (1 Hz) and then a final load-to-failure testing at a rate of 3 mm/min. Labral displacement of 2 mm was determined as the primary outcome.
There was no statistical difference (P = .22) in ultimate load to failure and displacement at ultimate failure (anchor pullout) between the all-soft JuggerKnot (146.0 ± 43.0 N and 19.8 ± 5.4 mm, respectively) and the solid SutureTak (171.9 ± 52.6 N and 22.3 ± 6.8 mm, respectively). The solid anchor had a significantly higher ultimate load at 2 mm of labral displacement than the all-soft suture anchor (84.1 ± 19.0 N and 39.2 ± 10.6 N, respectively; P < .001).
Whereas both the solid SutureTak and the all-soft JuggerKnot displayed similar results on ultimate load-to-failure testing, the solid anchor required significantly greater load for 2 mm of labral displacement than the all-soft anchor.
The all-soft anchor (JuggerKnot) is similar in biomechanical performance to the classic solid anchor (SutureTak) with the exception of load at 2 mm of labral displacement, suggesting micromotion of the device.
在体外肩盂唇修复模型中，评估全软缝线锚钉（JuggerKnot；Biomet，华沙，印第安纳州）与经典的实心缝线锚钉（2.4 毫米生物复合材料 SutureTak；Arthrex，那不勒斯，佛罗里达州）的生物力学性能。
我们解剖了 12 具尸体肩部（平均年龄，61±9.4 岁），保留完整的肩盂唇，获取骨密度（平均值，0.375±0.06g/cm(3)）。在肩盂唇的前下和后下边缘模拟肩盂唇撕裂。修复采用 2 个全软缝线锚钉（JuggerKnot）或 2 个实心锚钉，带有自由的高强度 2 号缝线（FiberWire；Arthrex）跨越手术结构，以加载修复。使用差动可变磁阻传感器测量每个标本的肩盂唇位移。测试方案包括 10N 预条件化阶段 10 个循环（1Hz），然后以 3mm/min 的速度进行最终的失效负载测试。2mm 的肩盂唇位移被确定为主要结果。
全软 JuggerKnot（分别为 146.0±43.0N 和 19.8±5.4mm）和实心 SutureTak（分别为 171.9±52.6N 和 22.3±6.8mm）在最终失效载荷和最终失效时的肩盂唇位移（锚钉拔出）方面无统计学差异（P=0.22）。实心锚钉在 2mm 肩盂唇位移时的最终失效载荷明显高于全软缝线锚钉（分别为 84.1±19.0N 和 39.2±10.6N；P<0.001）。
虽然实心 SutureTak 和全软 JuggerKnot 在最终失效载荷测试中表现出相似的结果，但实心锚钉在 2mm 肩盂唇位移时需要明显更大的载荷。
全软锚钉（JuggerKnot）与经典实心锚钉（SutureTak）在生物力学性能方面相似，除了在 2mm 肩盂唇位移时的装置微动之外。
