IRCT20151123025202N19 IRCT 2021-12-28 Hamedan University of Medical Sciences Treatment of acute post-Anserin bursitis with topical injection of corticosteroids and high-level laser therapy Comparison of the effectiveness of topical corticosteroid injection and high-level laser therapy in patients with acute post-Anserin bursitis(PAB) 2022-01-21 anticipated 60 Complete https://irct.ir/trial/60787 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: We made 60 cards and write letter I on 30 for Intervention and on the other 30 letter C for the control group. Then put them inside the envelope with aluminum wrap and put in a box. At the time of patient arrival, one of the envelopes randomly will be selected and will be opened, based on selected letter I or C patients will be assigned to intervention or control group, Blinding description: The person who asses outcome will be blinded to the patients' group. 3 pes anserine bursitis knee. Intervention 1: Intervention group: One group will undergo high-level laser therapy. For this purpose, gallium aluminum arsenide diode laser (model 4 cube-laser-K) with a wavelength of 1064 nm, an output power of 8 watts, and an average energy intensity of 4 joules per square centimeter will be used . The total duration of treatment in each session will be 5-7 minutes for 3 consecutive weeks (5 sessions). Intervention 2: Intervention group: The other group will receive a topical injection of corticosteroids. The corticosteroid contains 1 ml of triamcinolone and 1 ml of 2% lidocaine, which will be injected topically into the knee area under the sono guide single dose. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information