[Effect of low-intensity pulsed ultrasound on regeneration of joint cartilage in patients with second and third degree osteoarthritis of the knee].

Objective: To determine if the application of low intensity pulsed ultrasound (LIPUS) therapy has a positive effect over the cartilage repair, functional status and reduction of pain in patients with grade 2 or 3 osteoarthrosis of the knee.

Design: This trial was an observational, before and after study without a control group, in which 10 patients (eleven knees) were studied. We applied LIPUS therapy with an intensity of 0.