Levaquin and 5 years old

My son is 14 years old and was given two rounds of this drug for an infection (two weeks and one week respectively). Last round in the middle of September. The pain started with the first round and got worse the second time. Real bad. We had him tested for a multitude of diseases and x-rayed the knees - all came back normal. We finally stumbled onto the fact that the joint pain coincided with the drug - WE WERE NEVER WARNED!

Well, he's a heck of an athlete/student/good kid...and has been wrestling since he's 5 years old, has competed nationally and this sport is "his thing." Well, now he's finally in high school and can barely make it through practice - can't go live at all. The pain and stiffness ain't going away even though he's been off it since September!

What in the world can we do to treat this effectively (or t all)? Doctor prescribed anti-inflammatory meds and they did nothing. Physical therapy is doing nothing. Ultrasound treatment on knees is doing nothing.

How long will it last?

Help please anybody with any information - we're disparate.

Prayers are welcome too.

Thanks.

Craig V. (Dustins Dad)