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Evaluation of Achilles and patellar tendinopathy with greyscale ultrasound and colour Doppler: using a four-grade scale
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Professionell Development.
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2016 (English)In: Knee Surgery, Sports Traumatology, Arthroscopy, ISSN 0942-2056, E-ISSN 1433-7347, Vol. 24, no 6, 1988-1996 p.Article in journal (Refereed) Published
Abstract [en]

PURPOSE: In tendon research, using ultrasound (US), studies often refer to tendon thickness, structural abnormalities and neovascularisation. The reliability concerning these measurements and evaluations is seldom reported. The aim of this study was to assess the intra- and inter-observer reliability for quantitative measures (thickness) and qualitative evaluations (structure and neovascularisation) of symptomatic and asymptomatic Achilles and patellar tendons with US and colour Doppler using a modified Öhberg score.

METHODS: Twenty-eight consecutive patients with symptomatic and asymptomatic Achilles (n = 27) and patellar tendons (n = 26) were included. Tendon anteroposterior thickness was measured. Tendon structure and neovascularisation were evaluated using a modified Öhberg score. US-images were evaluated twice by four independent observers.

RESULTS: Mean thickness for Achilles and patellar tendons was 8.4 mm (±2.0) and 5.5 mm (±1.7), respectively. The reliability for measures of distance was high all over (ICC = 0.963-0.999). A moderate-strong correlation was found between observers concerning evaluation of neovascularisation (r = 0.767-0.992) and poor-moderate correlation concerning evaluation of structural changes (r = 0.379-0.837). Intra-observer reliability was moderate strong for evaluations of both tendon structure (k = 0.537-0.873) and neovascularisation (k = 0.639-0.864).

CONCLUSIONS: With a strict method for how to measure tendon thickness and set criteria for evaluating structural changes and amount and distribution of neovascularisation, US and colour Doppler is a reliable method for evaluating Achilles and patellar tendons. The modified, 4-graded, Öhberg score was found to be a reproducible instrument for assessment of tendon structure and neovascularisation.

Place, publisher, year, edition, pages
2016. Vol. 24, no 6, 1988-1996 p.
Keyword [en]
Echogenicity, Inter-observer reliability, Neovascularisation, Tendon structure, Öhberg score
National Category
Sport and Fitness Sciences
URN: urn:nbn:se:umu:diva-101455DOI: 10.1007/s00167-014-3270-4PubMedID: 25193569OAI: diva2:799317
Available from: 2015-03-30 Created: 2015-03-30 Last updated: 2016-10-03Bibliographically approved

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Fahlström, Martin
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