MEASUREMENT ERROR IN ASSESSMENT OF VERTEBRAL ROTATION USING THE PERDRIOLLE TORSIONMETER

被引：47

作者：

RICHARDS, BS

机构：

[1] Texas Scottish Rite Hospital, Dallas, TX

来源：

SPINE | 1992年 / 17卷 / 05期

关键词：

VERTEBRAL ROTATION; MEASUREMENT; TORSIONMETER; ERROR;

D O I：

10.1097/00007632-199205000-00008

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

The Perdriolle torsionometer assesses vertebral rotation on a spinal radiograph. It is frequently used to measure improvement in spinal derotation following Cotrel-Dubousset instrumentation for scoliosis. In this study, intraobserver and interobserver measurement error was examined during use of the torsionometer. Intraobserver error was as follows: 53% of the measurements were accurate to within 5-degrees, and 21% erred greater than 10-degrees. Error from the actual value averaged 6-degrees. Interobserver error was as follows: Among six observers, only one third of the radiographs had measurements within 5-degrees of each other. Another one third erred by more than 10-degrees. Because of this significant intraobserver and interobserver error, precise measurements of rotation using the torsionometer cannot be expected. Efforts to quantify spinal derotation with the torsionometer after Cotrel-Dubousset instrumentation may not be valid.

引用

页码：513 / 517

页数：5

共 15 条

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