Patients will be blinded to the kind of injection they receive, but the physicians who perform the injection will not be blinded for the medical record purposes. The injection will be done under ultrasound guidance to the subacromial space. Continuous blood glucose measurement will be started in an hour within the injection. An instructional session about continuous glucose monitoring will be given to the patients by our research team immediately following the injection. The blood glucose levels will be monitored for 1 week following the injection. The data will be collected on the patient's return to clinic in 2 weeks. Pain score based on a visual analog scale will be obtained prior to injection, 5 min, 3 days, 1 week, 2 weeks, 4 weeks, 6 weeks, 8 weeks, and 12 weeks after injection. Shoulder range of motion, patient satisfaction, QuickDash score, and ASES survey score will be measured in clinic 4, 8, and 12 weeks after injection.