Efficacy of Platelet-rich Plasma Injection Compare With Corticosteroid in Pes Anserinus Pain Syndrome

Randomization of patient with pes anserinus bursitis at opd od ramathibodi hospital. Objective : to study the efficacy of treatment between PRP injection and corticosteroid injection in patients with pes anserinus bursitis Medhods : A randomized controlled trial , Single blinded Participants : Patients with pes anserinus bursitis Randomization : Randomization will be performed using the software STATA 16.0 (StataCorp, College Station, Texas, USA). A various blocked randomization method Interventions and control : * Experimental groups : PRP injection 4 ml * Control groups : Steroid injection , Triamcinolone acetonide(40mg/ml) 1 ml + 1%Lidocaine without adrenaline 3 ml = 4ml By Orthopedic surgeon with ultrasound guide. Allocation and concealment : A central randomization service will prepare sealed envelopes containing the assigned treatment for each patient. The envelopes will be kept in secure location until Break the concealment at outpatient orthopedics department , Ramathibodi hospital Blinding : Randomized controlled trial study, Single blinded The assessor who will be follow up the patients, will be blinded to the group assignments. Outcome measures: Visual Analogue Scale (VAS) , Womac scores Follow up: at 4 weeks, 12 weeks, and 24 weeks after injection. Statistic analysis: STATA 16.0, StataCorp, College Station, Texas, USA Analysis Demographic data : mean, SD Mean difference in patient-relevant outcomes : Independent T- test