A Randomised Comparative Study between Ultrasound-guided Standard and Dual-target Sub-acromial Corticosteroid Injections for Shoulder Impingement Syndrome

Abstract Background: Subacromial impingement syndrome (SIS) is a common cause of shoulder pain and disability. Corticosteroid injection is an accepted therapy, but the optimal ultrasound-guided technique remains unsettled. Comparative evidence for a dual-target approach (addressing both the subacromial bursa and rotator-cuff tendon interface) is limited, warranting direct evaluation. Aim and Objective: To compare outcomes of USG-guided standard subacromial corticosteroid injection versus USG-guided dual-target corticosteroid injection in SIS. Materials and Methods: Prospective randomized study of SIS patients allocated to standard subacromial (Group A) or dual-target (Group B) injection; outcomes (VAS, SPADI, active ROM) assessed at baseline, ~3 weeks, and ~6 weeks. (Measures and timing aligned to your thesis/article dataset). Results: Both groups improved, with greater pain reduction and functional gains in the dual-target group at both follow-ups ( P < 0.05). Conclusion: USG-guided dual-target corticosteroid injection offers superior short-term pain relief and functional improvement compared with the standard subacromial technique in SIS.