The Achilles Tendon Length Measure and the Achilles Tendon Resting Angle show acceptable construct validity using the Copenhagen Achilles Length Measure as gold standard.
Achilles tendon rupture
Elongation
Outcome measure
Validity
Journal
Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons
ISSN: 1460-9584
Titre abrégé: Foot Ankle Surg
Pays: France
ID NLM: 9609647
Informations de publication
Date de publication:
Aug 2021
Aug 2021
Historique:
received:
04
05
2020
revised:
28
07
2020
accepted:
19
08
2020
pubmed:
3
9
2020
medline:
20
8
2021
entrez:
3
9
2020
Statut:
ppublish
Résumé
Elongation of the Achilles tendon after rupture is a frequent complication. The Achilles Tendon Length Measure (ATLM) and the Achilles Tendon Resting Angle (ATRA) are indirect length measures using the resting angle of the ankle. Copenhagen Achilles Length Measure (CALM) is a direct ultrasound measure. The purpose of this study was to examine the construct validity of ATLM and ATRA using CALM as gold standard. As the three measurements measure slightly different constructs and have different scales a direct comparison was not possible. Instead a mixed linear regression model was performed investigating the three models: CALM-ATRA, CALMATLM and ATRA-ATLM. 130 patients were available for analysis. All three regression models demonstrated a statistically significant (p < 0.01) linear relationship and acceptable certainty of the estimates. ATRA and ATLM were found to have acceptable construct validity when using CALM as gold standard for assessing tendon elongation after an Achilles tendon rupture.
Sections du résumé
BACKGROUND
BACKGROUND
Elongation of the Achilles tendon after rupture is a frequent complication. The Achilles Tendon Length Measure (ATLM) and the Achilles Tendon Resting Angle (ATRA) are indirect length measures using the resting angle of the ankle. Copenhagen Achilles Length Measure (CALM) is a direct ultrasound measure. The purpose of this study was to examine the construct validity of ATLM and ATRA using CALM as gold standard.
METHODS
METHODS
As the three measurements measure slightly different constructs and have different scales a direct comparison was not possible. Instead a mixed linear regression model was performed investigating the three models: CALM-ATRA, CALMATLM and ATRA-ATLM.
RESULTS
RESULTS
130 patients were available for analysis. All three regression models demonstrated a statistically significant (p < 0.01) linear relationship and acceptable certainty of the estimates.
CONCLUSION
CONCLUSIONS
ATRA and ATLM were found to have acceptable construct validity when using CALM as gold standard for assessing tendon elongation after an Achilles tendon rupture.
Identifiants
pubmed: 32873503
pii: S1268-7731(20)30175-2
doi: 10.1016/j.fas.2020.08.004
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
655-659Informations de copyright
Copyright © 2020 European Foot and Ankle Society. Published by Elsevier Ltd. All rights reserved.