The supraspinatus muscle tendinopathy show a big impact, however, there is a lack of awareness about the options of the physiotherapist treatment. It is necessary to do studies about effectiveness of therapeutic percutaneous electrolysis (EPTE®). This technique enables treatment of the tendinopathies and the broken muscle fibrilare. It is base on the application of galvanic current through a acupuncture needle. To analyze the effectiveness of therapeutic percutaneous electrolysis (EPTE®) in the treatment of supraspinatus muscle tendinopathy. Single center randomized controlled trial, parallel treatment design. A specialist physician will be diagnosed the supraspinatus muscle tendinopathy. Participants will be randomly assigned to receive treatmen for 4 weeks: EPTE® associated with eccentric exercises or dry needling with the same eccentric exercises. Both interventions were performed under ultrasound guidance with a portable ultrasound (General Electric LogicE). Data will be collected by a blinded evaluator.