Broken Tib and Fib in a 16 Year old?

A baseball accident in May 2010 broke both the tibia and fibula of my 16 year old son's left leg. He had surgery 6 hours after the accident where the Surgeon fitted his leg with a titanium rod in the tibia and held it down from his knee and his ankle with titanium nuts and bolts. He has since recovered and is back to playing baseball and doing track and field events. We have been advise to remove the nuts and bolts and even the rod. Can a anyone ..an orthopedic on the panel of advisors, give me an advise as to what the normal procedure is for such cases.