...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Injury >A biomechanical study comparing proximal femur nail and proximal femur locking compression plate in fixation of reverse oblique proximal femur fractures
【24h】

A biomechanical study comparing proximal femur nail and proximal femur locking compression plate in fixation of reverse oblique proximal femur fractures

机译：近端股骨钉和近端股骨锁定压缩板在反向倾斜近端股骨骨折固定中的生物力学研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Abstract Background The reverse oblique trochanteric fractures are common fractures and its treatment poses a challenge. The purpose of this study was to compare the biomechanical parameters of the construct using proximal femoral nail (PFN) and proximal femoral locking compression plates (PFLCP) in these fractures using cadaveric specimens. Materials and Methods Twenty freshly harvested cadaveric femoral specimens were randomly assigned to two groups after measuring bone mineral density, ten of which were implanted with PFN and the other ten with PFLCP. The constructs were made unstable to simulate reverse oblique trochanteric fracture (AO type 31A3.3) by removing a standard size posteromedial wedge. These constructs were tested in a computer controlled cyclic compressive loading with 200kg at a frequency of 1 cycle/s (1Hz) and test was observed for 50,000 cycles or until implant failure, whichever occurred earlier. Peak displacements were measured and analysis was done to determine axial stiffness and subsidence in axial loading. Results All the specimens in PFN group completed 50,000 cycles and in PFLCP group, seven specimens completed 50,000 cycles. Average subsidence in PFN group was 1.24±0.22mm and in PFLCP group was 1.48±0.38mm. The average stiffness of PFN group (72.6±6.8N/mm) was significantly higher than of PFLCP group (62.4±4.9N/mm) (P=0.04). The average number of cycles sustained by PFLCP was 46634 and for PFN group was 50,000 (P=0.06). Conclusion The PFN is biomechanically superior to PFLCP in terms of axial stiffness, subsidence and number of specimens failed for the fixation of reverse oblique trochanteric fractures of femur. ]]>
机译：摘要背景反向倾斜的传导术骨折是常见的骨折，其治疗造成挑战。本研究的目的是使用尸体样品使用近端股骨钉（PFN）和近端股骨锁定压缩板（PFLCP）的构建体的生物力学参数。材料和方法在测量骨矿物密度后，将二十个新鲜收获的尸体股本试样随机分配给两组，其中十分之一用PFN植入PFN和其他10。通过去除标准尺寸的后楔进行标准尺寸的后楔来模拟反向倾斜的Trochanteric骨折（AO型31A3.3）的构建体。这些构建体在计算机控制的循环压缩载量中进行测试，在1个循环/ s（1Hz）的频率下，并且观察到测试50,000个循环或直至植入物失败，以前的发生。测量峰位位移并进行分析以确定轴向载荷的轴向刚度和沉降。结果PFN组中的所有标本都完成了50,000个循环和PFLCP组，七个标本完成了50,000个循环。 PFN组的平均沉降为1.24±0.22mm，PFLCP组为1.48±0.38mm。 PFN组的平均刚度（72.6±6.8N / mm）显着高于PFLCP组（62.4±4.9N / mm）（P = 0.04）。 PFLCP持续的平均循环循环数为46634，对于PFN组为50,000（P = 0.06）。结论PFN在轴向刚度方面是生物力学上优于PFLCP，标本的沉降和标本的次数未能固定股骨的逆转倾斜转子骨折。 ]]>

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