Effectiveness of single intra-bursal injection of platelet-rich plasma against corticosteroid under ultrasonography guidance for shoulder impingement syndrome: a randomized clinical trial.

Objective: To compare the effectiveness of intra-bursal injection of single-dose platelet-rich plasma (PRP) against corticosteroids under ultrasonography guidance in shoulder impingement syndrome (SIS).

Materials And Methods: This single-blind randomized controlled trial was conducted on 60 participants with a clinical diagnosis of SIS from a selected orthopedic clinic. Thirty participants in each arm were given a single dose of either PRP or triamcinolone acetonide into the subacromial sub-deltoid bursa (SASD) under ultrasonography guidance.