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Reliability of radiographic measurements for acute distal radius fractures
BACKGROUND: The management of distal radial fractures is guided by the interpretation of radiographic findings. The aim of this investigation was to determine the intra- and inter-observer reliability of eight traditionally reported anatomic radiographic parameters in adults with an acute distal rad...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957423/ https://www.ncbi.nlm.nih.gov/pubmed/27443373 http://dx.doi.org/10.1186/s12880-016-0147-7 |
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author | Watson, Narelle J. Asadollahi, Saeed Parrish, Frank Ridgway, Jacqueline Tran, Phong Keating, Jennifer L. |
author_facet | Watson, Narelle J. Asadollahi, Saeed Parrish, Frank Ridgway, Jacqueline Tran, Phong Keating, Jennifer L. |
author_sort | Watson, Narelle J. |
collection | PubMed |
description | BACKGROUND: The management of distal radial fractures is guided by the interpretation of radiographic findings. The aim of this investigation was to determine the intra- and inter-observer reliability of eight traditionally reported anatomic radiographic parameters in adults with an acute distal radius fracture. METHODS: Five observers participated. All were routinely involved in making treatment decisions based on distal radius fracture radiographs. Observers performed independent repeated measurements on 30 radiographs for eight anatomical parameters: dorsal shift (mm), intra-articular gap (mm), intra-articular step (mm), palmar tilt (degrees), radial angle (degrees), radial height (mm), radial shift (mm), ulnar variance (mm). Intraclass correlation coefficients (ICCs) and the magnitude of retest errors were calculated. RESULTS: Measurement reliability was summarised as high (ICC > 0.80), moderate (0.60–0.80) or low (<0.60). Intra-observer reliability was high for dorsal shift and palmar tilt; moderate for radial angle, radial height, ulnar variance and radial shift; and low for intra-articular gap and step. Inter-observer reliability was high for palmar tilt; moderate for dorsal shift, ulnar variance, radial angle and radial height; and low for radial shift, intra-articular gap and step. Error magnitude (95 % confidence interval) was within 1–2 mm for intra-articular gap and step, 2–4 mm for ulnar variance, 4–6 mm for radial shift, dorsal shift and radial height, and 6–8° for radial angle and palmar tilt. CONCLUSIONS: Based on previous reports of critical values for palmar tilt, ulnar variance and radial angle, error margins appear small enough for measurements to be useful in guiding treatment decisions. Our findings indicate that clinicians cannot reliably measure values ≤1 mm for intra-articular gap and step when interpreting radiographic parameters using the standardised methods investigated in this study. As a guide for treatment selection, palmar tilt, ulnar variance and radial angle measurements may be useful, but intra-articular gap and step appear unreliable. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12880-016-0147-7) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-4957423 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-49574232016-07-23 Reliability of radiographic measurements for acute distal radius fractures Watson, Narelle J. Asadollahi, Saeed Parrish, Frank Ridgway, Jacqueline Tran, Phong Keating, Jennifer L. BMC Med Imaging Research Article BACKGROUND: The management of distal radial fractures is guided by the interpretation of radiographic findings. The aim of this investigation was to determine the intra- and inter-observer reliability of eight traditionally reported anatomic radiographic parameters in adults with an acute distal radius fracture. METHODS: Five observers participated. All were routinely involved in making treatment decisions based on distal radius fracture radiographs. Observers performed independent repeated measurements on 30 radiographs for eight anatomical parameters: dorsal shift (mm), intra-articular gap (mm), intra-articular step (mm), palmar tilt (degrees), radial angle (degrees), radial height (mm), radial shift (mm), ulnar variance (mm). Intraclass correlation coefficients (ICCs) and the magnitude of retest errors were calculated. RESULTS: Measurement reliability was summarised as high (ICC > 0.80), moderate (0.60–0.80) or low (<0.60). Intra-observer reliability was high for dorsal shift and palmar tilt; moderate for radial angle, radial height, ulnar variance and radial shift; and low for intra-articular gap and step. Inter-observer reliability was high for palmar tilt; moderate for dorsal shift, ulnar variance, radial angle and radial height; and low for radial shift, intra-articular gap and step. Error magnitude (95 % confidence interval) was within 1–2 mm for intra-articular gap and step, 2–4 mm for ulnar variance, 4–6 mm for radial shift, dorsal shift and radial height, and 6–8° for radial angle and palmar tilt. CONCLUSIONS: Based on previous reports of critical values for palmar tilt, ulnar variance and radial angle, error margins appear small enough for measurements to be useful in guiding treatment decisions. Our findings indicate that clinicians cannot reliably measure values ≤1 mm for intra-articular gap and step when interpreting radiographic parameters using the standardised methods investigated in this study. As a guide for treatment selection, palmar tilt, ulnar variance and radial angle measurements may be useful, but intra-articular gap and step appear unreliable. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12880-016-0147-7) contains supplementary material, which is available to authorized users. BioMed Central 2016-07-22 /pmc/articles/PMC4957423/ /pubmed/27443373 http://dx.doi.org/10.1186/s12880-016-0147-7 Text en © The Author(s). 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Article Watson, Narelle J. Asadollahi, Saeed Parrish, Frank Ridgway, Jacqueline Tran, Phong Keating, Jennifer L. Reliability of radiographic measurements for acute distal radius fractures |
title | Reliability of radiographic measurements for acute distal radius fractures |
title_full | Reliability of radiographic measurements for acute distal radius fractures |
title_fullStr | Reliability of radiographic measurements for acute distal radius fractures |
title_full_unstemmed | Reliability of radiographic measurements for acute distal radius fractures |
title_short | Reliability of radiographic measurements for acute distal radius fractures |
title_sort | reliability of radiographic measurements for acute distal radius fractures |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957423/ https://www.ncbi.nlm.nih.gov/pubmed/27443373 http://dx.doi.org/10.1186/s12880-016-0147-7 |
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