缝线锚钉小孔中的缝线强度及负荷施加角度。

Suture strength and angle of load application in a suture anchor eyelet.

作者信息

Deakin Mark, Stubbs David, Bruce Warwick, Goldberg Jerome, Gillies Ronald M, Walsh William R

机构信息

Orthopaedic Research Laboratories, University of New South Wales, Prince of Wales Hospital, Sydney, Australia.

出版信息

Arthroscopy. 2005 Dec;21(12):1447-51. doi: 10.1016/j.arthro.2005.09.003.

DOI:10.1016/j.arthro.2005.09.003

PMID:16376233

Abstract

PURPOSE

To assess the effect of suture material, anchor orientation, and anchor eyelet design on the static loading properties of suture anchors.

TYPE OF STUDY

Biomechanical bench study.

METHODS

Two metallic suture anchors, Mitek GII (Mitek, Westwood, MA) and Corkscrew (Arthrex, Naples, FL) and a bioabsorbable anchor (Biocorkscrew; Arthrex) were tested with single strand of No. 2 Ethibond (Ethicon, Norderstedt, Germany) or No. 2 FiberWire (Arthrex) suture. Suture pull angle was varied through 0 degrees, 45 degrees, and 90 degrees with the anchor rotation angle in either a sagittal or coronal plane. Constructs were tested to failure using an MTS 858 Bionix testing machine (Material Testing Systems, Eden Prairie, MN). Peak loads, stiffness, energy to peak load, and failure modes were determined for all samples.

RESULTS

FiberWire showed superior static mechanical properties when compared with single-strand Ethibond over all testing conditions (P < .05). Suture pull angle had a significant effect on load to failure with both metallic anchors but not on the bioabsorbable anchor (P < .05).

CONCLUSIONS

Suture pull angle and anchor rotation angle play an important role in the failure load of suture when placed in an eyelet. The polyaxial nature of the Biocorkscrew eyelet allows for increased degrees of freedom but introduces failure of the suture eyelet as a new failure mode.

CLINICAL RELEVANCE

The loading direction and placement of the suture anchor plays a role in the performance of the suture anchor-suture complex.

摘要

目的

评估缝合材料、锚钉方向及锚钉孔眼设计对缝合锚钉静态加载特性的影响。

研究类型

生物力学实验台研究。

方法

使用2号Ethibond（德国诺德施泰特的Ethicon公司）单股缝线或2号FiberWire（佛罗里达州那不勒斯的Arthrex公司）缝线对两种金属缝合锚钉（Mitek GII，马萨诸塞州韦斯特伍德的Mitek公司；Corkscrew，佛罗里达州那不勒斯的Arthrex公司）和一种生物可吸收锚钉（Biocorkscrew；佛罗里达州那不勒斯的Arthrex公司）进行测试。在矢状面或冠状面内，将缝合线牵拉角度随锚钉旋转角度分别设置为0度、45度和90度。使用MTS 858 Bionix测试机（明尼苏达州伊登草原的材料测试系统公司）对构建物进行破坏测试。测定所有样本的峰值负荷、刚度、达到峰值负荷时的能量及破坏模式。