Cargando…

BLU-DAT: a new reliable and accurate arthrometer for measuring anterior knee laxity

PURPOSE: Although many arthrometers have been developed to assess anterior knee laxity, reliability and diagnostic accuracy of these devices are still debated. The aim of the present study was to evaluate the validity of a new arthrometer in the outpatient setting, with the hypothesis that it had go...

Descripción completa

Detalles Bibliográficos
Autores principales: Colosio, Alessandro, Scaini, Alessandra, Motta, Marcello, Paderno, Marco, Saccomanno, Maristella F., Bettinsoli, Pierfrancesco, Bonaspetti, Giovanni, Milano, Giuseppe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10598137/
https://www.ncbi.nlm.nih.gov/pubmed/37553553
http://dx.doi.org/10.1007/s00167-023-07534-5
_version_ 1785125488939761664
author Colosio, Alessandro
Scaini, Alessandra
Motta, Marcello
Paderno, Marco
Saccomanno, Maristella F.
Bettinsoli, Pierfrancesco
Bonaspetti, Giovanni
Milano, Giuseppe
author_facet Colosio, Alessandro
Scaini, Alessandra
Motta, Marcello
Paderno, Marco
Saccomanno, Maristella F.
Bettinsoli, Pierfrancesco
Bonaspetti, Giovanni
Milano, Giuseppe
author_sort Colosio, Alessandro
collection PubMed
description PURPOSE: Although many arthrometers have been developed to assess anterior knee laxity, reliability and diagnostic accuracy of these devices are still debated. The aim of the present study was to evaluate the validity of a new arthrometer in the outpatient setting, with the hypothesis that it had good validity in terms of reliability and diagnostic accuracy. METHODS: Seventy-eight subjects (39 with ACL injury and 39 with normal ACL) were tested. ATT was assessed by means of the Lachman test at 30° of flexion with a new testing device (BLU-DAT) under three different loading conditions: 7 kg (69 N), 9 kg (88 N) and maximum (MMT). The tests were performed on both knees to obtain SSD. In the ACL injury group, the tests were performed by two examiners and one of them repeated a second test series. Inter- and intra-observer reliability were assessed with the intraclass correlation coefficients (ICCs) for the average SSD measures. In the normal-ACL group, the analysis was performed with the same testing setup. Side-to-side difference measures of the two groups at every loading condition were compared by Student’s t test. Data of test series were dichotomized based on the threshold value of 3-mm SSD as pathological ATT and 2 × 2 contingency tables were used to assess diagnostic accuracy. RESULTS: The ICCs for intra-observer reliability at 7-kg (69 N), 9-kg (88 N) and MMT measurements were 0.781, 0.855 and 0.913, respectively. The ICC for inter-observer reliability at 7-kg (69 N), 9-kg (88 N) and MMT measurements were 0.701, 0.845 and 0.834, respectively. Comparison between the two groups showed a significant mean difference ranging from 3.4 mm for 7-kg (69 N) load to 4.6 mm for MMT. Overall accuracy ranged from 84.6% for 7-kg load to 98.7% for MMT. CONCLUSION: The BLU-DAT has proven to be an instrument with good intra- and inter-observer reliability and very good accuracy in the diagnosis of ACL injuries in the outpatient setting. So, the BLU-DAT can be a new useful tool in everyday clinical practice to assist in the diagnosis of ACL injury. LEVEL OF EVIDENCE: II. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00167-023-07534-5.
format Online
Article
Text
id pubmed-10598137
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Springer Berlin Heidelberg
record_format MEDLINE/PubMed
spelling pubmed-105981372023-10-26 BLU-DAT: a new reliable and accurate arthrometer for measuring anterior knee laxity Colosio, Alessandro Scaini, Alessandra Motta, Marcello Paderno, Marco Saccomanno, Maristella F. Bettinsoli, Pierfrancesco Bonaspetti, Giovanni Milano, Giuseppe Knee Surg Sports Traumatol Arthrosc Knee PURPOSE: Although many arthrometers have been developed to assess anterior knee laxity, reliability and diagnostic accuracy of these devices are still debated. The aim of the present study was to evaluate the validity of a new arthrometer in the outpatient setting, with the hypothesis that it had good validity in terms of reliability and diagnostic accuracy. METHODS: Seventy-eight subjects (39 with ACL injury and 39 with normal ACL) were tested. ATT was assessed by means of the Lachman test at 30° of flexion with a new testing device (BLU-DAT) under three different loading conditions: 7 kg (69 N), 9 kg (88 N) and maximum (MMT). The tests were performed on both knees to obtain SSD. In the ACL injury group, the tests were performed by two examiners and one of them repeated a second test series. Inter- and intra-observer reliability were assessed with the intraclass correlation coefficients (ICCs) for the average SSD measures. In the normal-ACL group, the analysis was performed with the same testing setup. Side-to-side difference measures of the two groups at every loading condition were compared by Student’s t test. Data of test series were dichotomized based on the threshold value of 3-mm SSD as pathological ATT and 2 × 2 contingency tables were used to assess diagnostic accuracy. RESULTS: The ICCs for intra-observer reliability at 7-kg (69 N), 9-kg (88 N) and MMT measurements were 0.781, 0.855 and 0.913, respectively. The ICC for inter-observer reliability at 7-kg (69 N), 9-kg (88 N) and MMT measurements were 0.701, 0.845 and 0.834, respectively. Comparison between the two groups showed a significant mean difference ranging from 3.4 mm for 7-kg (69 N) load to 4.6 mm for MMT. Overall accuracy ranged from 84.6% for 7-kg load to 98.7% for MMT. CONCLUSION: The BLU-DAT has proven to be an instrument with good intra- and inter-observer reliability and very good accuracy in the diagnosis of ACL injuries in the outpatient setting. So, the BLU-DAT can be a new useful tool in everyday clinical practice to assist in the diagnosis of ACL injury. LEVEL OF EVIDENCE: II. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00167-023-07534-5. Springer Berlin Heidelberg 2023-08-08 2023 /pmc/articles/PMC10598137/ /pubmed/37553553 http://dx.doi.org/10.1007/s00167-023-07534-5 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Knee
Colosio, Alessandro
Scaini, Alessandra
Motta, Marcello
Paderno, Marco
Saccomanno, Maristella F.
Bettinsoli, Pierfrancesco
Bonaspetti, Giovanni
Milano, Giuseppe
BLU-DAT: a new reliable and accurate arthrometer for measuring anterior knee laxity
title BLU-DAT: a new reliable and accurate arthrometer for measuring anterior knee laxity
title_full BLU-DAT: a new reliable and accurate arthrometer for measuring anterior knee laxity
title_fullStr BLU-DAT: a new reliable and accurate arthrometer for measuring anterior knee laxity
title_full_unstemmed BLU-DAT: a new reliable and accurate arthrometer for measuring anterior knee laxity
title_short BLU-DAT: a new reliable and accurate arthrometer for measuring anterior knee laxity
title_sort blu-dat: a new reliable and accurate arthrometer for measuring anterior knee laxity
topic Knee
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10598137/
https://www.ncbi.nlm.nih.gov/pubmed/37553553
http://dx.doi.org/10.1007/s00167-023-07534-5
work_keys_str_mv AT colosioalessandro bludatanewreliableandaccuratearthrometerformeasuringanteriorkneelaxity
AT scainialessandra bludatanewreliableandaccuratearthrometerformeasuringanteriorkneelaxity
AT mottamarcello bludatanewreliableandaccuratearthrometerformeasuringanteriorkneelaxity
AT padernomarco bludatanewreliableandaccuratearthrometerformeasuringanteriorkneelaxity
AT saccomannomaristellaf bludatanewreliableandaccuratearthrometerformeasuringanteriorkneelaxity
AT bettinsolipierfrancesco bludatanewreliableandaccuratearthrometerformeasuringanteriorkneelaxity
AT bonaspettigiovanni bludatanewreliableandaccuratearthrometerformeasuringanteriorkneelaxity
AT milanogiuseppe bludatanewreliableandaccuratearthrometerformeasuringanteriorkneelaxity