The purpose of this study is to evaluate the safety and efficacy of the study drug ZILRETTA (Triamcinolone Acetonide, extended release) compared to a placebo (saline solution). The study drug is administered through an ultrasound-guided injection to the affected shoulder. 66.6 percent of participants will receive Zilretta and 33 percent will receive placebo.
The study Drug ZILRETTA, is currently FDA-approved for knee osteoarthritis and is being investigated in this study for treatment of shoulder osteoarthritis. The study population consists of adults 50-80 years of age who have been diagnosed with Osteoarthritis of the shoulder by x-ray. The study has 9 study visits over 24-week's and will include, but is not limited to a questionnaire, medical examination, shoulder x-ray and blood draws. Each visit should last less than 1 hour, depending on the procedures performed. The most common side effects of the study drug are joint pain, headaches, upper respiratory infections, back pain, joint swelling, and cold symptoms.