ERRORS IN MEASUREMENT OF ACETABULAR INDEX

被引：66

作者：

PORTINARO, NMA ^{[1
]}

MURRAY, DW ^{[1
]}

BHULLAR, TPS ^{[1
]}

BENSON, MKD ^{[1
]}

机构：

[1] NUFFIELD ORTHOPAED CTR,NUFFIELD DEPT ORTHOPAED SURG,OXFORD OX3 7LD,ENGLAND

来源：

JOURNAL OF PEDIATRIC ORTHOPAEDICS | 1995年 / 15卷 / 06期

关键词：

ACETABULAR INDEX; ERRORS;

D O I：

10.1097/01241398-199511000-00010

中图分类号：

R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];

学科分类号：

摘要：

Errors in determining the acetabular index can be induced either by incorrectly positioning the child for radiographs or by inter- or intraobserver errors. From postmortem radiographic studies, we have determined the magnitude of these errors. The error caused by pelvic rotation is +/-3 degrees if the obturator foramina ratio is kept within 0.5 to 2. If pelvic flexion/extension is confined to +/- 10 degrees, the error induced by flexion/extension is +/-3 degrees. The intraobserver error was +/-2 degrees, and the interobserver error was +/-3 degrees. Under these circumstances, the total error is +/-5 degrees. We have not been able to find a satisfactory way of limiting the flexion/extension to +/-10 degrees. In some circumstances, particularly if a child is distressed, the flexion/extension may be 20 degrees from neutral; under these circumstances, errors as large as 10 degrees can occur. Surgeons should be aware that very large errors can occur when the acetabular index is measured.

引用

页码：780 / 784

页数：5

共 16 条

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