caa a22 4500 605460841 CHVBK 20210128100240.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00167-014-3175-2 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3175-2 Validation of a novel ultrasound measurement of achilles tendon length [Elektronische Daten] [Kristoffer Barfod, Anja Riecke, Anders Boesen, Philip Hansen, Jens Maier, Simon Døssing, Anders Troelsen] Purpose: A clinically applicable and accurate method for measuring Achilles tendon length is needed to investigate the influence of elongation of the Achilles tendon after acute rupture. The purpose of this study was to develop and validate an ultrasonographic (US) length measurement of the Achilles tendon-aponeurosis complex. Methods: Both legs of 19 non-injured subjects were examined by magnetic resonance imaging (MRI) and US. The length from calcaneus to the medial head of m. Gastrocnemius was measured by three independent US examiners. Repeated US measurements were performed and compared to MRI measurements. Intra-rater and inter-rater reliability and the agreement between MRI and US were determined. Data were evaluated using the intraclass correlation coefficient (ICC), the standard error of the measurement (SEM) and the minimal detectable change (MDC). Results: Intra-rater reliability of US assessment showed no significant differences between test days: ICC 0.96, SEM 4mm and MDC 10mm. Inter-rater reliability showed a systematic difference between US observers of 2-5mm (p=0.001-0.036); ICC 0.97, SEM 3mm and MDC 9mm. MRI measurements were on average 4mm longer than US (p=0.001). Conclusion: The novel ultrasound measurement showed good reliability and accuracy. For comparison between groups of non-injured subjects differences of more than 4mm can be detected. For repeated assessment of individual subjects differences of more than 10mm can be detected. The measurement needs to be further assessed in the setting of acute Achilles tendon rupture. Clinical relevance: This new ultrasound measurement might allow for length measurement of ruptured Achilles tendons in the acute and chronic state after rupture. Level of evidence: II. Springer-Verlag Berlin Heidelberg, 2014 Achilles tendon nationallicence Rupture nationallicence Length nationallicence Measure nationallicence Elongation nationallicence Ultrasound nationallicence Reliability nationallicence Validity nationallicence Accuracy nationallicence Barfod Kristoffer Department of Orthopedics, Clinical Orthopedic Research Hvidovre, Copenhagen University Hospital Hvidovre, Kettegård Alle 30, 2650, Hvidovre, Denmark aut Riecke Anja Department of Orthopedics, Copenhagen University Hospital Køge, Lykkebækvej 1, 4600, Køge, Denmark aut Boesen Anders Institute of Sports Medicine, Copenhagen University Hospital Bispebjerg, Bispebjerg Bakke 23, 2400, Copenhagen NV, Denmark aut Hansen Philip Department of Radiology, Copenhagen University Hospital Bispebjerg, Bispebjerg Bakke 23, 2400, Copenhagen NV, Denmark aut Maier Jens Department of Radiology, Copenhagen University Hospital Køge, Lykkebækvej 1, 4600, Køge, Denmark aut Døssing Simon Department of Orthopedics, Copenhagen University Hospital Hvidovre, Kettegård Alle 30, 2650, Hvidovre, Denmark aut Troelsen Anders Department of Orthopedics, Clinical Orthopedic Research Hvidovre, Copenhagen University Hospital Hvidovre, Kettegård Alle 30, 2650, Hvidovre, Denmark aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3398-3406 0942-2056 23:11<3398 2015 23 167 https://doi.org/10.1007/s00167-014-3175-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3175-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barfod Kristoffer Department of Orthopedics, Clinical Orthopedic Research Hvidovre, Copenhagen University Hospital Hvidovre, Kettegård Alle 30, 2650, Hvidovre, Denmark aut NATIONALLICENCE 700 1- Riecke Anja Department of Orthopedics, Copenhagen University Hospital Køge, Lykkebækvej 1, 4600, Køge, Denmark aut NATIONALLICENCE 700 1- Boesen Anders Institute of Sports Medicine, Copenhagen University Hospital Bispebjerg, Bispebjerg Bakke 23, 2400, Copenhagen NV, Denmark aut NATIONALLICENCE 700 1- Hansen Philip Department of Radiology, Copenhagen University Hospital Bispebjerg, Bispebjerg Bakke 23, 2400, Copenhagen NV, Denmark aut NATIONALLICENCE 700 1- Maier Jens Department of Radiology, Copenhagen University Hospital Køge, Lykkebækvej 1, 4600, Køge, Denmark aut NATIONALLICENCE 700 1- Døssing Simon Department of Orthopedics, Copenhagen University Hospital Hvidovre, Kettegård Alle 30, 2650, Hvidovre, Denmark aut NATIONALLICENCE 700 1- Troelsen Anders Department of Orthopedics, Clinical Orthopedic Research Hvidovre, Copenhagen University Hospital Hvidovre, Kettegård Alle 30, 2650, Hvidovre, Denmark aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3398-3406 0942-2056 23:11<3398 2015 23 167