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Hello and thank you for your question. I personally do not like cortisone injections because steroid injections typically do more harm than good to tissues and joints in the long run. Also, they do not help to avoid recurrences but only treat the acute pain. My only other advice would be to consider physical therapy to strengthen your chest and arms to help minimize the strain on the area of injury by making movements more efficient and less strenuous. But do make sure you work with an experienced PT so as not to actually aggravate your injury.