Lioness, the surgeon I saw today told me this can occur when they cut through a nerve when doing the hip replacement.. I also had Morton's...Just have to be careful about the type of shoes I wear. I don't understand the point in getting a 2nd opinion if the doctor can't treat me. It's nuts.. I've been in pain since my fall in 2015 and it's starting to get me down. I also just discovered by reading an old x-ray report that I have disuse osteoporosis in the area of the hip replacement. This apparently occurred when I was nonweightbearing for 3 months with the tibial plateau and hip fractures. Sorry about all the whining. I just feel that some of these physicians don't think we're worthy of answers.