Background There are multiple treatments in physiotherapy for patellar tendinopathy, highlighting the combination of electrolysis ecoguide with eccentric exercises and training in hypoxia. The use of ultrasound in the electrolysis ensures that the puncture is made in the right place. Monitoring of clinical symptoms could be associated with the change in the sonographic signs.

Methods Electrolysis sessions are held every 10 days+ecoguide eccentric exercise plan, until the symptoms allows patients return to their own exercise routine. Each session is completed with a Visual Analogue Scale (VAS), a ‘Knee Society Score Questionnaire ‘(QKSS) and’ International Knee Documentation Committee Form Knee ‘(IKDC). Furthermore ultrasound images for later analysis of the calcification size, thickness tendon, echogenicity and presence or absence of Doppler signal, are stored.

Results A significant reduction in short-term pain that allows the return to normal sporting activity, before 1 month after the first intervention, is observed. There are no significant changes in the ultrasound images obtained in the same period.

Conclusions Ultrasound is an effective method of guidance for conducting electrolysis in the patellar tendon, but does not show a good correlation with the changes in short-term symptoms. Sonographic needs further checks to verify the hypothesis of a confluence of symptoms and signs in the medium term.