Yes, I heard they do because cortisone is good for any type of scar reduction. I might not go for the shots though. Why don't you try to use a cream? The cream works wonderfully. It may take more time but it is less painful than those shots that you may take.
Cortisone shots will often help to reduce hypertrophic scars so that they lay more flatly against the skin and are less apparent. They're often the treatment of choice, but the best judge of whether they'll be good for your particular scar and situation is best made by a physician with experience in the area.
Most of the time there is little benefit and infact it can make it worse by thinning the skin around it. Time will make it look better. Or try witamin D oil.
Cortisone shots work by reducing the inflammation in the injured area so that pain in the area is reduced, the recovery process is quickened, and the hypertrophic scars are reduced after a few number of injections.
A monthly injection of cortisol is considered the most effective treatment for these kinds of scars. After about 3 to 6 months the scar is less noticeable.
I have a hypertrophic Scar on my back and neck after 2 moles were removed, Im going august 11th to get cortisone shots... I'll let you know what happens afterwards.
Aldara and cortisone injections shots (+/- 5-fluorouracil), the pulsed-dye laser, post-surgical massaging of the scar as well as silicone gel sheeting are useful adjuncts to reduce hypertrophic scars