TKR and Foot Numbness

I had TKR for left knee, in early January. 6 months later, my left foot is still numb, but also feels like the top of my foot is in a vice grip. Is this nerve pain, tendons pulled too tight during surgery, or something else? Any advice, info, wisdom is greatly appreciated. My surgeon, not with great believability, just keeps telling me it may take up to a year to go away. So very annoying.