Ultrasound-Guided Standard vs Dual-Target Subacromial Corticosteroid Injections for Shoulder Impingement Syndrome: A Randomized Controlled Trial

To compare dual-target injection with standard ultrasound (US)-guided subacromial injection in patients with subacromial impingement syndrome (SIS) and possible disorders of the biceps long-head tendons.Double-blind, randomized controlled trial.Rehabilitation outpatient clinic.Patients with SIS (N=60).(1) US-guided standard subacromial bursa; (2) dual-target (subacromial bursa plus proximal biceps long-head tendon) injection, with 40-mg...