About two thirds of patients with jumper’s knee can be expected to have structural tendon changes with neovascularization.
The purpose of this investigation was 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.
The ultrasound examination revealed that neovascularization was present in 48 of the 79 tendons (60%) studied (63 patients; 11 women and 52 men). 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 was no relationship between changes in ultrasound characteristic and knee function after sclerosing treatment.
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