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Color Doppler ultrasound findings in patellar tendinopathy (jumper's knee).
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Diagnostic Radiology.
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Sports Medicine.
2008 (English)In: The American journal of sports medicine, ISSN 1552-3365, Vol. 36, no 9, 1813-1820 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Recent studies have revealed structural changes with neovessels in patients with jumper's knee and Achilles tendinopathy, and treatment with sclerosing injections has shown promising clinical results. PURPOSE: To study the prevalence of neovascularization and structural tendon changes on color Doppler ultrasound examination in elite athletes with clinical symptoms of jumper's knee and to examine the ultrasound characteristics of the tendon after sclerosing injection treatment with polidocanol. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: The authors recruited patients among elite athletes with a clinical diagnosis of jumper's knee who participated in a previous randomized clinical trial. The patients recorded knee function using the Victorian Institute of Sport Assessment score. Patients were examined by color Doppler ultrasound at baseline and, for patients with structural changes and neovascularization who received sclerosing treatment, after treatment. RESULTS: Sixty-three patients (11 women and 52 men) with 79 symptomatic tendons were studied. The ultrasound examination revealed that neovascularization was present in 48 of the 79 tendons (60%). Of 33 patients (43 tendons) who received sclerosing injections, 29 patients (37 tendons, 86%) were examined 37 (19 to 53) weeks after their final sclerosing injections. Of these, 7 tendons (18.9%) had no change in neovascularization after treatment, 21 tendons (56.8%) had less neovascularization, and 9 tendons (24.3%) had more visible neovascularization. There were no significant differences in the change in Victorian Institute of Sport Assessment score between patients who had less, more, or unchanged neovascularization after treatment (analysis of variance, P = .9). CONCLUSION: About two thirds of patients with jumper's knee can be expected to have structural tendon changes with neovascularization. There was no relationship between changes in ultrasound characteristic and knee function after sclerosing treatment.

Place, publisher, year, edition, pages
2008. Vol. 36, no 9, 1813-1820 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:umu:diva-22761DOI: 10.1177/0363546508319897PubMedID: 18753682OAI: diva2:218017
Available from: 2009-05-18 Created: 2009-05-18 Last updated: 2011-08-24

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