IRCT20151123025202N6 IRCT 2020-01-10 Hamedan University of Medical Sciences Treatment of lateral epicondylitis Comparison between ultrasound therapy and biofeedback therapy in treatment of lateral epicondylitis 2019-12-22 anticipated 50 Complete https://irct.ir/trial/43477 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: For this purpose, we will use Sealed non-transparent envelopes. on 25 paper sheets of letter I meaning intervention and on 25 sheets of letter C means comparison. will be written. We mix the sheets together and place them in the envelopes and drawer of the table.. each time the patient is eligible, we randomly pull out one of the envelopes and open them according to the letter I or C written on the paper. They will be assigned to either intervention or comparison group, respectively. It should be noted that sampling will be non placement. 3 lateral epicondylitis. Intervention 1: Intervention group:The biofeedback device is manufactured in Canada. The patients are treated with biofeedback for 5 sessions and 7 minutes each session. The procedure is that the electrodes are closed on the forearm extensor and flexor muscles according to the treatment protocol, and then a visual feedback is presented to the individual on the basis of computer equipment and the frequency range of the contraction waves. The muscles strengthened in this process are primarily Extensor Carpi Radialis Brevis - Physiopedia and then Flexor carpi radialis, Flexor digitorum superficialis and Supinator and flexor wrist muscles will be inhibited. The main result of this study is effect strength and endurance of wrist and Wrist extensors extensors in lateral epicondylitis. Intervention 2: control group: In the Ultrasound group, the SLE laser therapy, Ultrasound (1 and 3.3 MHz multiphase) and EIE Construction Electrotherapy in Poland will be used. This group will also be treated for 5 sessions and 7 minutes each session. No - There is not a plan to make this available Justification or reason for not sharing IPD is No more information