Comparison of Subacromial Ozone (O2-O3) and Corticosteroid Injections in the Treatment of Rotator Cuff Tendinopathy

US-guided injections will be performed with a 5-12 MHz linear transducer (Logic e portable; GE Healthcare, China) by the same physiatrist and injections will be administered into the subacromial bursa with a posterolateral approach. 3 sessions (1 session/week) of 5 mL of ozone (O2-O3) will be injected (with a concentration of 10 μg/mL in the first session, 15 μg/mL in the second session, and 20 μg/mL in the third session).

US-guided injections will be performed with a 5-12 MHz linear transducer (Logic e portable; GE Healthcare, China) by the same physiatrist and injections will be administered into the subacromial bursa with a posterolateral approach. A mixture of 1 mL corticosteroid (betamethasone 3 mg/mL) and 1 mL lidocaine (20 mg) will be injected (1 session).