My mother is 42 year old lady. She has undergone bilateral Total Hip replacement .Left One in 2008 and right one in 2013. From last 2 months she is suffering from too much pain in right hip. xray says there is some problem in hip but doctors suggested to have three phase isotope bone scan in which hip is declared 100% ok. Can you suggest why there is unbearable pain? Is it because of some nerves or what? Whom to consult for this?