一种基于乘数的四肢长度差异的经体形时间预测方法
Reza Abdi1, Omid Shahpari1, Farshid Bagheri1
1Orthopedic Research Center, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.
The archives of bone and joint surgery
|December 26, 2023
概括
这项研究简化了四肢长度差异 (LLD) 的计算,通过三角法证明增长抑制 (GI) 概念. 一种新的比例性分析方法可以在没有复杂的GI计算的情况下,在骨成熟时估计短四肢的长度,用于获得的LLD.
科学领域:
- 整形外科 整形外科 整形外科
- 生物机械工程 生物机械工程
- 儿科手术 儿科手术
背景情况:
- 在骨成熟 (Sm) 后估计最终四肢长度差异 (LLD) 是至关重要的.
- 对于获得的LLD来说,帕利的倍数方法很方便,但很复杂,它使用了一个未经证实的"生长抑制" (GI) 变量.
- 与先天类型相比,目前获得LLD的方法存在计算复杂性.
研究的目的:
- 调查一种用于估计Sm和LLD的替代方法.
- 要确定在不使用复杂的GI变量的情况下是否可以计算LLD.
- 为了简化在获得的LLD.骨成熟时估计短四肢长度.
主要方法:
- 用三角方程验证增长抑制 (GI) 概念.
- 使用比例分析计算短四肢长度和骨成熟时的LLD.
- 这项研究旨在在计算中绕过GI的数值.
主要成果:
- 增长抑制 (GI) 概念是使用三角学数学证明的.
- 通过简单的比例分析 (ΔLm/ΔL = ΔSm/ΔS),可以准确地估计骨成熟时的短四肢长度.
- 对于准确的LLD估计,不需要GI的数值.
结论:
- 在GI概念是三角函数验证.
- 一个简单的比例分析有效地估计了骨成熟时的短四肢长度.
- 这种简化方法避免了与收购LLD的增长抑制相关的复杂计算.
相关概念视频
Distance Problem
When an object's velocity changes over time, the total distance traveled can be determined by summing small displacement intervals over short increments. This approach approximates the true distance through numerical summation and the use of integral calculus. An estimate of the total displacement can be obtained by measuring velocity at regular intervals and multiplying each value by the corresponding time step.If a runner accelerates over the first three seconds of a race, speed measurements...
Trapezoidal Rule
Estimating the distance traveled by a vehicle using its recorded velocity over time is a common problem in physics and engineering. When velocity data is available at discrete time intervals, rather than as a continuous function, numerical integration methods such as the trapezoidal rule are often employed to approximate the total displacement.The trapezoidal rule works by dividing the total time interval into several equal segments. Within each segment, the recorded velocities at the endpoints...


