Has anyone had Kenalog (Triamcinolone acetonide) injections to try to help sphincter muscles relax?

I had an injection last week and initially it seemed to make a difference although one week on its effects seem to be fading away and my tight muscle symptoms are returning.

Not sure if multiple injections are needed at 6 week intervals?

This is my last chance saloon as if it doesn't work then it will be back to the ostomy, which is not too bad if it means I can get on with my life and not have to worry about a poor functioning pouch!

Tom