Clinical Results of Pulsed Signal Therapy on Patellofemoral Syndrome With Patellar Chondropathy

Riccardo Gobbi, Adriana Pastore e Silva, Marco Kawamura Demange, José Ricardo Pécora, João Espregueira-Mendes, Gilberto Luis Camanho


What did the study consist of?

A prospective double-blind placebo randomized controlled study that evaluated the effects of pulsatile electromagnetic therapy - Pulsed Signal Therapy (PST) - in patients with painful joint syndrome patellofemoral associated with patellar chondropathy. The study included 25 patients (41 knees) aged between 20 and 50 years who were randomized to the PST group and the control group and followed for 12 months. The PST group received nine 60 min treatment sessions with PST. The control group received placebo treatment (blinded) with the same protocol. After 3 months of treatment, if the efficacy of PST was proven, the patients in the control group would also receive effective treatment (post-treatment placebo).


And what results have been achieved?

  • At month three, the PST group exhibited a mean change 9.63 points on the Kujala scale compared to 0.53 in the placebo group (P<0.001).
  • A significant progressive improvement was observed in the PST group between month 3 and 6 and between month 6 and 12 (P<0.016).


What did we learn from this work?

  • PST therapy in patients with patellofemoral pain syndrome associated with patellar chondropathy was effective compared to placebo at 3 months, showing significant improvement on the Kujala scale. The beneficial effect was progressive and maintained until 12 months.
  • PST is safe, effective and should be considered as a non-invasive option for the treatment of patellofemoral pain syndrome associated with patellar chondropathy.


How can I deepen my knowledge about femur-patellar pain?  

Academia Clínicas Espregueira makes available to you several courses related to the evaluation, prevention and treatment of knee pathology.

These courses are taught based on the latest scientific evidence and proven by the vast experience of Clínica Espregueira - Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence.

You can read this article published in Bio Electro Magnetics Journal via the following link:


Did you like our article?

Share and leave your comment! Here at the Academia Clínicas Espregueira we love to share knowledge!


Related Posts