Modelling the effects of different fracture geometries and healing stages on ultrasound signal loss across a long bone fracture

被引：16

作者：

Centre for Orthopaedic Biomechanics, Department of Mechanical Engineering, University of Bath, Bath, Avon BA2 7AY, United Kingdom ^{[1
]}

不详 ^{[2
]}

机构：

[1] Centre for Orthopaedic Biomechanics, Department of Mechanical Engineering, University of Bath, Bath

[2] Institute of Sound and Vibration Research (ISVR), University of Southampton, Southampton

来源：

Comput. Methods Biomech. Biomed. Eng. | 2007年 / 5卷 / 371-375期

关键词：

Attenuation; Axial transmission; Cortical bone; Fracture healing;

D O I：

10.1080/10255840701502387

中图分类号：

学科分类号：

摘要：

The effect on the signal amplitude of ultrasonic waves propagating along cortical bone plates was modelled using a 2D Finite Difference code. Different healing stages, represented by modified fracture geometries were introduced to the plate model. A simple transverse and oblique fracture filled with water was introduced to simulate the inflammatory stage. Subsequently, a symmetric external callus surrounding a transverse fracture was modelled to represent an advanced stage of healing. In comparison to the baseline (intact plate) data, a large net loss in signal amplitude was produced for the simple transverse and oblique cases. Changing the geometry to an external callus with different mechanical properties caused the net loss in signal amplitude to reduce significantly. This relative change in signal amplitude as the geometry and mechanical properties of the fracture site change could potentially be used to monitor the healing process. © 2007 Taylor & Francis.

引用

页码：371 / 375

页数：4

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