I am 72 and 4th day post 2nd TKR. The first one went fine a number of years ago. I am specifically addressing the neuropathy. I have had post-chemo neuropathy for over 10 years. There are a variety of drugs you can try.
i tried Gabapentin which knocked me out. I tried Lyrica which worked pretty well but made me feel drunk. The antidepressant Cymbalta is approved for neuralgia pain. I take Effexor XR which is another SNRI for depression. I took it years ago and stopped it once. My feet were so tender I could barely walk and went back on it. If neuropathy is impacting your balance, there are PT centers that specialize in balance therapy. I wear the hospital type socks at home constantly. They have a variety on Amazon. Make sure the backs of your heels are covered in any footwear. I have had a lot of falls and 2 TBIS due to my neuropathy. Started using a small crossbody purse for better balance and to keep my hands free. A pain clinic is a good place to go as they are usually persistent. Best of luck.