MAG,I skipped all the other posts and went right to this spot. Cortizone can help some people but not all people. Every bodys tolerance is different and some people get several shots through their lifetime while others need only one. A disturbing number of people have their tendon and tendon sheath disolve and blowout and become not only useless but a surgical nightmare.
The therapists I worked with to restore the use of my hands and fingers after reconnective surgery strongly advised no cortizone or derivitives in my case. Deep massage, heat and ice, and a regimen suggested by a good PT will be better than any injection. Save the cortizone till the last resort.
Don