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McNemar's Test is a nonparametric statistical test used to determine if there is a significant difference in proportions between two related groups when the outcome is binary (e.g., yes/no, success/failure). It is beneficial when we have paired data, such as pre-test/post-test designs, where the same subjects are measured under two different conditions. The test is named after the statistician Quinn McNemar, who introduced it in 1947. It is commonly used in situations where subjects are...
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The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
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一个简单而通用的测试对肘部后侧旋转不稳定性的测试.

Amanda N Goldin1, Kathryn D Dwight1, Eric R Hentzen1

  • 1University of California San Diego, La Jolla, USA.

Hand (New York, N.Y.)
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概括

与传统的横向枢纽转移测试相比,新的后方放射性毛细膜外置测试 (PRST) 在诊断后侧旋转不稳定性 (PLRI) 中显示出更高的准确度和灵敏度. 这种操作为LCL缺乏提供了潜在的更容易和更有效的诊断选择.

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科学领域:

  • 整形外科手术 整形外科手术
  • 生物力学 生物力学
  • 诊断技术 诊断技术

背景情况:

  • 后侧旋转不稳定性 (PLRI) 是由于侧侧侧带 (LCL) 缺陷引起的.
  • 侧向枢纽转移测试是PLRI的标准诊断工具,但通常很难执行,患者耐受不佳.
  • 开发了一种新的机动方法,即后方放射性资本体外置试验 (PRST),以潜在地克服这些限制.

研究的目的:

  • 为了比较PRST的诊断效率和可重现性与PLRI的既定侧向轴转移测试.
  • 评估两种诊断试验在尸体样本中的灵敏度,特异性和准确性.

主要方法:

  • 使用了十个尸体的上肢标本.
  • 在五个标本中释放了LCL起源以诱导PLRI.
  • 整形外科医生和一名住院医生盲目地进行了PRST和侧向轴转移测试,并在第二天重复评估.

主要成果:

  • 与枢纽转移测试 (67.5%,P = .03) 相比,PRST的整体准确性更高 (77.5%).
  • 对于PRST的灵敏度明显高 (75.0%) 比转轴转移测试 (50.0%,P = .003).
  • 在PRST (80.0%) 和枢纽转移测试 (85.0%,P = .55) 之间,特异性是可比的.

结论:

  • 后部放射性毛细细胞突测试 (PRST) 是PLRI的一种有前途的新诊断手段.
  • 在侧向转转移测试中,PRST表现出与侧向转转移测试相似或更高的准确性和灵敏度.
  • PRST提供了可比的观察者内部和观察者间可靠性,这表明它是一种可重复的诊断工具.