一种新型尺骨冠突接骨板的生物力学测试
Biomechanical testing of a novel osteosynthesis plate for the ulnar coronoid process.
作者信息
Kiene Johannes, Bogun Jorn, Brockhaus Nina, Waizner Klaus, Schulz Arndt-Peter, Wendlandt Robert
机构信息
University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.
出版信息
Shoulder Elbow. 2014 Jul;6(3):191-9. doi: 10.1177/1758573214532794. Epub 2014 May 6.
BACKGROUND
The present study aimed to biomechanically evaluate a novel locking plate intended for osteosynthesis of coronoid fracture compared to mini L-plates and cannulated screws.
METHODS
Biomechanical tests were performed on a fracture model in synthetic bones. Three groups, each with eight implant-bone-constructs, were analyzed in quasi-static and dynamic tests. Finally, samples were tested destructively for maximum strength.
RESULTS
The mean (SD) highest stiffness was measured for the novel plate [693 (18) N/mm], followed by the mini L-plate [646 (37) N/mm] and the cannulated screws [249 (113) N/mm]. During the cycling testing of the novel plate and the mini L-plate, no failures occurred, although three of the eight samples of cannulated screws failed during the test. The mean (SD) maximum strength during the destructive testing was 1333 (234) N for the novel plate, 1338 (227) N for the mini-L-plate and 459 (56) N for the cannulated screws. No statistical differences were found during the destructive testing between the two plates (p = 0.999), although statistical differences were found between both plates and the cannulated screws (p = 0.000 each).
CONCLUSIONS
Osteosynthesis of the coronoid process using the novel plate is mechanically similar to the mini L-plate. Both plates were superior to osteosynthesis with cannulated screws.
背景
本研究旨在对一种用于冠状突骨折骨固定的新型锁定钢板与微型L形钢板和空心螺钉进行生物力学评估。
方法
在合成骨骨折模型上进行生物力学测试。对三组，每组八个植入物-骨结构进行准静态和动态测试。最后，对样本进行破坏性测试以获得最大强度。
结果
新型钢板的平均（标准差）最高刚度为[693（18）N/mm]，其次是微型L形钢板[646（37）N/mm]和空心螺钉[249（113）N/mm]。在新型钢板和微型L形钢板的循环测试中，未发生失效，尽管八个空心螺钉样本中有三个在测试过程中失效。在破坏性测试中，新型钢板的平均（标准差）最大强度为1333（234）N，微型L形钢板为1338（227）N，空心螺钉为459（56）N。在破坏性测试中，两种钢板之间未发现统计学差异（p = 0.999），尽管两种钢板与空心螺钉之间均发现统计学差异（p均为0.000）。
结论
使用新型钢板进行冠状突的骨固定在力学上与微型L形钢板相似。两种钢板均优于空心螺钉骨固定。
Zotero 插件