Sixty patients with a diagnosis of knee osteoarthritis, aged between 40 and 80 years, of both genders were included. The patients were divided into: experimental group that carried out an educational program - 5 consecutive sessions held once a week, with a duration of 60 minutes each class and at the end of the last class, a booklet was delivered for each patient with all the contents of the classes and the Transcutaneous Nerve Electro-Stimulation device - being performed twice weekly, for 5 weeks for 40 minutes each session; and control group who only underwent treatment with the Transcutaneous Nerve Electro-Stimulation in the same parameters as experimental group. The evaluations were performed at the beginning of the treatment, 4 and 12 weeks after the beginning of the treatment using a numerical pain scale; WOMAC; IDATE and SF-36 questionnaires; and 6-minute walk test.

Inclusion Criteria:

• Diagnosis of knee Osteoarthritis by American College of Rheumatology criteria;
• Age between 40 and 80 years;
• Both genders;
• Numerical Pain Scale in the knee between 3 and 8 centimeters on a scale of 0 to 10 centimeters.

Exclusion Criteria:

• Systemic inflammatory diseases or any condition that prevents the practice of physical activity;
• Regular physical activity started or changed in the last twelve weeks;
• No ambulation;
• Joint injection in the knee in the previous twelve weeks;
• Previous knee surgery or surgery planned for the next twenty-four weeks;
• Physiotherapy in the last twelve weeks;
• Other disease that affects the lower limbs;
• Open wounds at the electrode application site;
• Planned trip in the next twelve weeks.