Thanks for writing to us.
Since you have a persistent back pain
even after the drainage
of pus, you need to have a repeat MRI
to know the present status of your pus and infection. Blood tests will be helpful in determining if your infection has subsided or not. Please consult your orthopedician for a detailed and proper treatment.
I hope this information has been both informative and helpful for you.
Dr. Rakhi Tayal