AN ANALYSIS OF ERRORS IN KINEMATIC PARAMETERS ASSOCIATED WITH INVIVO FUNCTIONAL RADIOGRAPHS

被引：94

作者：

PANJABI, M

CHANG, D

DVORAK, J

机构：

[1] Biomechanics Laboratory, Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT

[2] Department of Neurology, Klinik Wilhelm Schulthess, Zürich

来源：

SPINE | 1992年 / 17卷 / 02期

关键词：

ERRORS IN KINEMATICS; FUNCTIONAL RADIOGRAPHS; SPINAL KINEMATICS; SPINAL INSTABILITY;

D O I：

10.1097/00007632-199202000-00014

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

A pair of functional radiographs, taken at each end of the range of motion, are used to determine spinal motions. Graphic construction and computer-assisted methods are available for the radiographic analysis. The latter provides many more motion parameters. A study of lumbar spine lateral radiographs was conducted to determine errors in the motion parameters due to spinal level, radiographic quality, and errors in the two digitizing instruments. Significant differences were found in the errors due to the two digitizers when the same radiographic pair was redigitized several times. There were only minimal differences, however, between the digitizers when the radiographic films were remarked and redigitized. The error ranges (2 x SD) for the motion parameters were 1) rotation = +/- 1.25-degrees; 2) translation of the inferior posterior vertebral body corner = +/- 0.86-degrees; and 3) coordinates for the center of rotation = +/- 4.3 mm. Both the spinal level and radiographic quality affected the magnitude of errors in all motion parameters.

引用

页码：200 / 205

页数：6

共 11 条

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