IRCT201608154104N5 IRCT 2016-09-25 Research center of Physical Medicine and Rehabilitation,Tabriz university of medical sciences Comparison of the effects of ShockWave Therapy and physiothreapy in teratment of muscular pain of shoulder. Comparison of the effects of Extracorporeal ShockWave Therapy and conventional physiotherapy in improvement of patients with shoulder girdle myofascial pain syndrome. 2016-10-22 anticipated 66 Complete https://irct.ir/trial/4299 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Other design features: The patients will divide randomly into 3 groups (A,B,C).For randomization we will use computerized randomization with Excel software and we will write this sequence in separate pockets and put them in a box. The patients will treat with sequence of this box. N/A Muscular pain syndrome. Intervention 1: Shockwave therapy with shockwave instrument(2000 impulses,5Hz,EFD=0.1 mj/mm2) for 3 sessions( 1 session per week) with stretch exercises of shoulder muscles at home for 20 days(twice a day). Intervention 2: Routine physiothrapy for 10 sessions( 3 sessions per week) with stretch exercises of shoulder muscles at home for 20 days(twice a day).physiotherapy includes: hot pack for 20 minutes with heat of 74.5 degrees celsius. Electrical nerve stimulation with frequencies of 70 to 80 hertz for 25 minutes. Continuous ultrasonography with dose of 1.25 to 1.5 w/cm2. Intervention 3: The third group will do stretch exercises of shoulder for 20 days( twice a day).