Bearing Area: A New Indication for Suture Anchor Pullout Strength?
Bearing Area: A New Indication for Suture Anchor Pullout Strength?
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DOI：
10.1002/jor.20856
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发表时间：
2009-08-01
影响因子：
2.8
通讯作者：
Gall, Ken
中科院分区：
文献类型：
--
作者：
Yakacki, Christopher Michael;Griffis, Jack;Gall, Ken
对缝线锚钉的拔出强度进行定量的研究尚未充分定义控制单调拔出的基本器械参数。缝线锚的承载面积可用于理解和预测锚在软骨模型中的拔出强度。首先，圆锥形试验样品的尺寸和形状不同，并在5、8和10 pcf人工骨模型中进行拔出试验。接下来，根据9种市售带线锚钉（包括Mitek QuickAnchor和SpiraLok、Opus Magnum（2）、ArthroCare ParaSorb和Arthrex BioCorkscrew），对试验样本形成的承压面积和拔出强度关系进行了确认。样品显示出承载面积和拔出强度之间的直接相关性。插入深度增加是次要条件，也增加了拔出强度。带线锚钉的拔出强度遵循基于其单独承载面积的锥形器械的预测趋势。对于5 pcf和8 pcf型号，分别只有2件和3件器械超出预测拔出强度范围超过标准差。根据Arthrex Corkscrew在5具新鲜冷冻尸体肱骨头中的拔出强度，对合成人工骨模型的使用进行了确认。缝线锚的承载面积可用于预测与设计无关的拔出强度。这项工作有助于为理解影响缝线锚钉拔出强度的原理提供基础。(C)2009骨科研究学会。由威利期刊公司出版J Orthop Res 27：1048-1054，2009
Studies performed to quantity the pullout strength of suture anchors have not adequately defined the basic device parameters that control monotonic pullout. The bearing area of a suture anchor can be used to understand and predict anchor pullout strength in a soft-bone model. First, conical-shaped test samples were varied in size and shape and tested for pullout in 5, 8, and 10 pcf sawbone models. Next, bearing area and pullout strength relationships developed from the test samples were validated against nine commercially available suture anchors, including the Mitek QuickAnchor and SpiraLok, Opus Magnum(2), ArthroCare ParaSorb, and Arthrex BioCorkscrew. The samples showed a direct correlation between bearing area and pullout strength. Increased insertion depth was a secondary condition that also increased pullout strength. The pullout strength for the suture anchors followed the predicted trends of conical devices based on their individual bearing areas. For the 5 and 8 pcf models, only two and three devices, respectively, fell outside the predicted pullout strength range by more than a standard deviation. The use of a synthetic sawbone model was validated against the pullout strength of an Arthrex Corkscrew in five fresh-frozen cadaver humeral heads. The bearing area of a suture anchor can be used to predict the pullout strength independent of design in a soft-bone model. This work helps provide a foundation to understand the principles that affect the pullout strength of suture anchors. (C) 2009 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 27:1048-1054, 2009