Hello. My Mom Had Swelling In L4-L5 Disc. Doctor Said

Hello. my mom had swelling in L4-L5 disc. doctor said us to go for operation. after first operation there was no improvement in her heath. she got urine infection after operation. then again doctor said us she got swelling in her lower disc. she again under went for 2nd operation. even after 2nd operation there is not improvement in health .. she has terrible urine infection after operation. every half & hour she has rush to washroom. now dr says her spinal is slightly turn because of that she is having back pain. she not able to walk.. she can walk little with help of walker it pains went she walks. before operation she was able to walk but she had pain she just had thyroid & B.P. i would like to know why still she has pain back & while walking, urine infection will get cure. doctor is telling no for physiotherapy.. why can she go for physiotherapy