Comparative accuracy of magnetic resonance imaging and ultrasonography in confirming clinically diagnosed patellar tendinopathy

Warden, Stuart J., Kiss, Zoltan S., Malara, Frank A., Ooi, Alistair B. T., Cook, Jill L. and Crossley, Kay M. (2007) Comparative accuracy of magnetic resonance imaging and ultrasonography in confirming clinically diagnosed patellar tendinopathy. American Journal of Sports Medicine, 35 3: 427-436. doi:10.1177/0363546506294858


Author Warden, Stuart J.
Kiss, Zoltan S.
Malara, Frank A.
Ooi, Alistair B. T.
Cook, Jill L.
Crossley, Kay M.
Title Comparative accuracy of magnetic resonance imaging and ultrasonography in confirming clinically diagnosed patellar tendinopathy
Journal name American Journal of Sports Medicine   Check publisher's open access policy
ISSN 0363-5465
Publication date 2007-03-01
Year available 2007
Sub-type Article (original research)
DOI 10.1177/0363546506294858
Open Access Status DOI
Volume 35
Issue 3
Start page 427
End page 436
Total pages 10
Place of publication Thousand Oaks, CA, United States
Publisher Sage Publications
Language eng
Formatted abstract
Background: Diagnosis of patellar tendinopathy is based primarily on clinical examination; however, it is commonplace to image the patellar tendon for diagnosis confirmation, with the imaging modalities of choice being magnetic resonance imaging (MRI) and ultrasonography (US). The comparative accuracy of these modalities has not been established.
Hypothesis: Magnetic resonance imaging and US have good (>80%) accuracy and show substantial agreement in confirming clinically diagnosed patellar tendinopathy.
Study Design: Cohort study (diagnosis); Level of evidence, 2.
Methods: Magnetic resonance imaging and US (gray scale [GS-US] and color Doppler [CD-US]) features of 30 participants with clinically diagnosed patellar tendinopathy and 33 activity-matched, asymptomatic participants were prospectively compared. Accuracy, sensitivity, specificity, positive and negative predictive values, and the likelihood of positive and negative test results were determined for each technique.
Results: The accuracy of MRI, GS-US, and CD-US was 70%, 83%, and 83%, respectively (P = .04; MRI vs GS-US). The likelihood of positive MRI, GS-US, and CD-US was 3.1, 4.8, and 11.6, respectively. The MRI and GS-US had equivalent specificity (82% vs 82%; P = 1.00); however, the sensitivity of GS-US was greater than MRI (87% vs 57%; P = .01). Sensitivity (70% vs 87%; P = .06) and specificity (94% vs 82%; P = .10) did not differ between CD-US and GS-US.
Conclusions: Ultrasonography was more accurate than MRI in confirming clinically diagnosed patellar tendinopathy. GS-US and CD-US may represent the best combination for confirming clinically diagnosed patellar tendinopathy because GS-US had the greatest sensitivity, while a positive CD-US test result indicated a strong likelihood an individual was symptomatic.
Keyword Anterior knee pain
Jumper's knee
MRI
Tendinitis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Health and Rehabilitation Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 60 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 69 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Thu, 29 Mar 2012, 00:25:57 EST by System User on behalf of School of Health & Rehabilitation Sciences