@Nathalie, have you told your doctor about the side effect you are having with the ketoprofen injection? It seems that one of the side effects has to do with the lower legs getting swollen or stiff. Here is a good site to talk about this drug and its side effects:
https://www.drugs.com/sfx/ketoprofen-side-effects.html
Hope these side effects are temporary that once the effect is over you are back to normal with your legs. Don't blame yourself for seeking medical treatment. We all need medical treatment at times and will have to depend on the judgement of the doctors or specialists in charge on the use of medicines. Unfortunately sometimes the side effects happen to certain people. Just a fact of life that you don't have to feel guilty about. Stay positive.
https://www.drugs.com/sfx/ketoprofen-side-effects.html
Hope these side effects are temporary that once the effect is over you are back to normal with your legs. Don't blame yourself for seeking medical treatment. We all need medical treatment at times and will have to depend on the judgement of the doctors or specialists in charge on the use of medicines. Unfortunately sometimes the side effects happen to certain people. Just a fact of life that you don't have to feel guilty about. Stay positive.