Topical pain telief

I am 79 female generally good health and physical condition given my age. This is day 17 post tkr. NSAIDs inflamed my pancreas and opioids inflamed my liver. So I’ve just been taking Tylenol and it has been a rougher go than I’d like. Probably everyone might say that regardless.

Before surgery I used voltaren gel and it helped take the edge off pain. Can this be used. I’ve been trying cod cream but other than the pleasant feel of massaging the leg I can’t say it does anything except for costing a lot.

Any advice other than ice and elevation ?