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首页> 外文期刊>Arthroscopy: the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association >Calcium Phosphate Bone Void Filler Increases Threaded Suture Anchor Pullout Strength: A Biomechanical Study
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Calcium Phosphate Bone Void Filler Increases Threaded Suture Anchor Pullout Strength: A Biomechanical Study

机译：磷酸钙骨空隙填料增加螺纹缝合锚延伸强度：生物力学研究

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Purpose: To compare the response to cyclical loading and ultimate pull-out strength of threaded suture anchor with and without calcium phosphate bone void filler augmentation in a polyurethane foam block model and in vitro proximal humerus cadaveric model. Methods: This controlled biomechanical study consisted of 2 parts: (1) preliminary polyurethane foam block model, and (2) in vitro cadaveric humeri model. The preliminary foam block model intended to mimic osteoporotic bone using a 0.12 g/mL foam material. Half of the foam block models were first filled with injectable calcium phosphate bone substitute material (CP-BSM), whereas the other half were not augmented with CP-BSM. Each specimen was then instrumented with a threaded suture anchor. The same technique and process was performed in a matched cadaveric humeri model. Testing then consisted of a stepwise, increasing axial load protocol for a total of 40 cycles. If the anchor remained intact after cyclic loading, the repair was loaded to failure. The number of completed cycles, failure load, and failure modes were compared between groups. Results: Average pull-out strength for suture anchor with CP-BSM in the osteoporotic foam block model was significantly higher at 332.68 N +/- 47.61 compared with the average pull-out strength of suture anchor without CP-BSM at 144.38 N +/- 14.58 (P = .005). In the matched cadaveric humeri model, average pull-out strength for suture anchor with CP-BSM was significantly higher at 274.07 N +/- 102.07 compared with the average pull-out strength of suture anchor without CP-BSM at 138.53 N +/- 109.87 (P = .029). Conclusions: In this time zero, biomechanical study, augmentation of osteoporotic foam block and cadaveric bone with calcium phosphate bone substitute material significantly increases pull-out strength of threaded suture anchors.
机译：目的：比较螺纹缝合锚的循环加载和终极拉出强度的响应，在聚氨酯泡沫模型和体外肱骨尸体尸体模型中没有磷酸钙骨空隙填料增强。方法：该控制生物力学研究由2份：（1）初步聚氨酯泡沫块模型组成，（2）在体外尸体蜂豚模型中。使用0.12g / ml泡沫材料模拟骨质疏松骨的初步泡沫块模型。首先用可注射磷酸钙骨替代材料（CP-BSM）的泡沫块模型的一半，而另一半没有用CP-BSM增强。然后用螺纹缝合锚来仪器仪表。在匹配的尸体肱骨模型中进行了相同的技术和过程。然后测试由逐步的，增加轴向载荷协议，总共40个循环。如果循环加载后锚仍然完整，则将修复加载到失败。在组之间比较了完成的周期，故障负载和失败模式的数量。结果：332.68 n +/- 47.61，骨质疏松泡沫块模型中CP-BSM缝合锚的平均拉伸强度明显高于332.68 n +/- 47.61，而14.38 n + / - 14.58（p = .005）。在匹配的尸体模型中，274.07 n +/- 102.07与CP-BSM的缝合线锚定的平均拉出强度与138.53 n +/-的缝合锚的平均拉出强度相比显着更高。 109.87（p = .029）。结论：在这段时间零，生物力学研究，骨质疏松泡沫块和磷酸钙骨替代材料的尸体骨的增强显着提高了螺纹缝合锚的拉出强度。

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