• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Orthopaedic Journal of Sports Medicine >A Biomechanical and Clinical Comparison of Midshaft Clavicle Plate Fixation: Are 2 Screws as Good as 3 on Each Side of the Fracture?
【24h】

A Biomechanical and Clinical Comparison of Midshaft Clavicle Plate Fixation: Are 2 Screws as Good as 3 on Each Side of the Fracture?

机译：中轴锁骨板固定的生物力学和临床比较：骨折的每一侧有2个螺钉和3个螺钉一样好吗？

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Background: The standard of care for plating displaced midshaft clavicle fractures has been 6 cortices of purchase on each side of the fracture. The use of locking plates and screws may afford equivalent biomechanical strength with fewer cortices of purchase on each side of the fracture. Purpose: To compare the biomechanical and clinical performance of 3- versus 2-screw constructs for plating displaced midshaft clavicle fractures. Study Design: Controlled laboratory study/cohort study; Level of evidence, 3. Methods: Lateral fragments of simulated midshaft fractures in 10 pairs of cadaveric clavicles were randomly assigned to plate fixation with either 3 nonlocking screws or 2 locking screws. Cyclic tensile loads were applied along the long axis of the clavicle. The constructs were then loaded to failure with pullout forces applied parallel to the long axis of the screws. Additionally, clinical outcomes of patients who had midshaft clavicle fractures that were surgically repaired were retrospectively identified and compared; 21 patients were treated with 3-screw constructs and 20 with 2-screw constructs. Results: Biomechanically, there were no significant differences for cyclic displacement, stiffness, yield load, or ultimate load between groups. Forces required for screw pullout were considerably higher than physiologic forces experienced by a healing clavicle in vivo. Clinically, there were no significant differences in American Shoulder and Elbow Surgeons, Constant, visual analog scale, and Single Assessment Numeric Evaluation scores; complications; or mean time to union. Additionally, we found that the plates used in the 2-screw group were consistently shorter. Conclusion: Plate fixation of displaced midshaft clavicle fractures with 4 cortices of purchase with 2 locking screws demonstrated no significant differences biomechanically when compared with fixation with 6 cortices of purchase and 3 nonlocking screws. Clinically, there were no significant differences in outcomes or complications seen in patients receiving 2- or 3-screw constructs. Clinical Relevance: Clinical benefits of using the 3-screw construct for plate fixation include decreased surgical exposure, morbidity, and cost, and the use of shorter and noncontoured straight plates eliminates the extra time and technical difficulty associated with matching longer contoured plates to the complex morphology of the clavicle.
机译：背景：电镀移位中轴锁骨骨折的护理标准是在骨折的每一侧购买6个皮质。锁定板和螺钉的使用可以提供同等的生物力学强度，而在骨折的每一侧都可以减少购买的皮质。目的：比较3螺钉螺钉和2螺钉螺钉的结构在移位中轴锁骨骨折中的生物力学和临床性能。研究设计：对照实验室研究/队列研究;证据等级，3。方法：用3个非锁定螺钉或2个锁定螺钉将10对尸体锁骨的模拟中轴骨折的侧向碎片随机分配至钢板固定。沿锁骨的长轴施加循环拉伸载荷。然后通过平行于螺钉的长轴施加的拔出力将结构加载至失效。此外，回顾性鉴定和比较了经手术修复的锁骨中轴骨折患者的临床结果。 21例患者接受了3螺钉构建，20例接受了2螺钉构建。结果：在生物力学上，两组之间的循环位移，刚度，屈服载荷或极限载荷没有显着差异。螺钉拔出所需的力明显高于愈合中的锁骨在体内所承受的生理力。临床上，美国肩肘外科医师，固定，视觉模拟量表和单项评估数字评估得分无显着差异。并发症;或平均工会时间。此外，我们发现2螺钉组中使用的板始终较短。结论：用2个锁定螺钉购买4个购置皮质的钢板固定移位的中轴锁骨骨折与用6个购买皮质和3个非锁定螺钉进行固定的生物力学无明显差异。临床上，接受2或3螺钉构建体的患者在预后或并发症方面无显着差异。临床相关性：使用3螺钉结构进行板固定的临床益处包括减少手术暴露，发病率和成本，并且使用较短且无轮廓的直板可避免将较长轮廓的板与复合物相匹配的额外时间和技术难度锁骨的形态。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号