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Repeatability of sonographic measurements in clubfeet

Aurell, Ylva LU ; Adlercreutz, C; Andriesse, Hanneke LU and Jonsson, Kjell LU (2004) In Acta Radiologica 45(6). p.622-627
Abstract
Purpose: To assess the intra- and interobserver agreement of ultrasound assessment of clubfoot patho-anatomy in early childhood. Material and Methods: Seventeen clubfeet in 12 children were sequentially scanned by 2 examiners and repeat assessments were carried out independently. Three well-defined imaging planes were chosen to evaluate navicular displacement: the medial malleolus-navicular (MM-N) distance, soft tissue thickness, talar deformity and the calcaneocuboid (C-C) distance. Intra- and interobserver agreement was analysed using Cohen's kappa for the discrete variables and by Bland-Altman's graphic technique for measurements. Results: Kappa values for intra-observer agreement were 0.82 for navicular displacement, 0.93 for "talar... (More)
Purpose: To assess the intra- and interobserver agreement of ultrasound assessment of clubfoot patho-anatomy in early childhood. Material and Methods: Seventeen clubfeet in 12 children were sequentially scanned by 2 examiners and repeat assessments were carried out independently. Three well-defined imaging planes were chosen to evaluate navicular displacement: the medial malleolus-navicular (MM-N) distance, soft tissue thickness, talar deformity and the calcaneocuboid (C-C) distance. Intra- and interobserver agreement was analysed using Cohen's kappa for the discrete variables and by Bland-Altman's graphic technique for measurements. Results: Kappa values for intra-observer agreement were 0.82 for navicular displacement, 0.93 for "talar head pointing laterally", and 0.70 for medial deviation of the talar neck. The corresponding interobserver kappa values were 0.70, 0.68, and 0.36. The mean difference between the two observers for the MM-N distance was 0.42+/-3.0 mm and for the soft tissue thickness 0.35+/-2.0 mm; the C-C distance showed a mean interobserver distance of 0.0+/-2.8 mm. Conclusion: The imaging planes used to study the talo-navicular and calcaneo-cuboid relationships are reproducible and relatively easy to learn. Intra- and interobserver assessments were acceptable for MM-N distance, soft tissue thickness, navicular displacement and "talar head pointing laterally", but questionable for the C-C distance and medial deviation of the talar neck. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ultrasound, repeatability, clubfoot, observer variation
in
Acta Radiologica
volume
45
issue
6
pages
622 - 627
publisher
John Wiley & Sons
external identifiers
  • pmid:15587419
  • wos:000224677500007
  • scopus:16644373433
ISSN
1600-0455
DOI
10.1080/02841850410008360
language
English
LU publication?
yes
id
04b339b3-01f2-406f-a081-b707fd17e450 (old id 262984)
date added to LUP
2007-10-16 14:25:29
date last changed
2017-08-20 04:15:58
@article{04b339b3-01f2-406f-a081-b707fd17e450,
  abstract     = {Purpose: To assess the intra- and interobserver agreement of ultrasound assessment of clubfoot patho-anatomy in early childhood. Material and Methods: Seventeen clubfeet in 12 children were sequentially scanned by 2 examiners and repeat assessments were carried out independently. Three well-defined imaging planes were chosen to evaluate navicular displacement: the medial malleolus-navicular (MM-N) distance, soft tissue thickness, talar deformity and the calcaneocuboid (C-C) distance. Intra- and interobserver agreement was analysed using Cohen's kappa for the discrete variables and by Bland-Altman's graphic technique for measurements. Results: Kappa values for intra-observer agreement were 0.82 for navicular displacement, 0.93 for "talar head pointing laterally", and 0.70 for medial deviation of the talar neck. The corresponding interobserver kappa values were 0.70, 0.68, and 0.36. The mean difference between the two observers for the MM-N distance was 0.42+/-3.0 mm and for the soft tissue thickness 0.35+/-2.0 mm; the C-C distance showed a mean interobserver distance of 0.0+/-2.8 mm. Conclusion: The imaging planes used to study the talo-navicular and calcaneo-cuboid relationships are reproducible and relatively easy to learn. Intra- and interobserver assessments were acceptable for MM-N distance, soft tissue thickness, navicular displacement and "talar head pointing laterally", but questionable for the C-C distance and medial deviation of the talar neck.},
  author       = {Aurell, Ylva and Adlercreutz, C and Andriesse, Hanneke and Jonsson, Kjell},
  issn         = {1600-0455},
  keyword      = {ultrasound,repeatability,clubfoot,observer variation},
  language     = {eng},
  number       = {6},
  pages        = {622--627},
  publisher    = {John Wiley & Sons},
  series       = {Acta Radiologica},
  title        = {Repeatability of sonographic measurements in clubfeet},
  url          = {http://dx.doi.org/10.1080/02841850410008360},
  volume       = {45},
  year         = {2004},
}