Is Hip Replacement Advisable For Very Less Gap Between Joints?

my papa met with an accident 10 years back. at that time the hip joint was replaced by a steel ball. He was all well that time, but now after 10 yrs he is suffering from pain and after X-ray it was found that the gap between the both joint is very less. Now I have heard about total hip replacement. Can you pls. suggest me the best hospital for this replacement?