IRCT2016062028542N1 IRCT 2017-03-08 investigator dry needling efficacy in patients on pain and function of patient with patellofemoral pain syndrome Comparison of ischemic compression and dry needling as trigger point therapy for patellofemoral pain syndrome in young adults: A double-blind randomized clinical trial 2017-05-22 anticipated 54 Complete https://irct.ir/trial/23141 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Other, Purpose: Treatment, Other design features: blocking method. N/A patellofemoral pain syndrome. Intervention 1: Intervention group 1: ischemic compression: Treatment in this group involves applying tolerably painful, persistent manual pressure (usually with the thumb) against the tissue barrier of the MTrP. The examiner sustained the pressure for 90 seconds. Compression was performed three times in each session, with a 30-second rest between applications. Each patient in this group will receive 3 sessions of treatment per week alternatively. Main outcome measures were recorded before treatment, 1 week, 1 month and 3 months after the last session of treatment. Intervention 2: Intervention group 2: dry needling: the needle was inserted perpendicularly through the skin over the MTrP area, using the fast-in and fast-out technique and moved forward until a local twitch response was obtained. Each patient in this group will receive 3 sessions of treatment per week. Main outcome measures were recorded before treatment, 1 week, 1 month and 3 months after the last session of treatment.