Dear Patient, Since your father has been started on AKT4, it means that he is suffering from tuberculosis of the spine, the surgical treatment of decompression has already been done, as your history suggest, but the medical treatment to cure the disease takes 12 to 14 months to complete, if routine pain medication are not giving relief, i would recommend you to see a pain medicine specialist, and under his guidance control pain, let the ATT continue, but please see that the dosing given is weight controlled, as inadequate dose, and multiresistant bacteria is the main cause of treatment failure in TB. I hope this helps you, feel free to contact for any other information Thanks.