### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
i suffered an injury on 23rd dec in spine.for 15 days was not aware of severity of the injury until got mri done .was diagnosed with posterior buldge in l4 l5 and l5 S1... degenrative changes wid dessication in lumber regoin.noted stenosis in neural foramina.and paracenteral shift of l5 s1 disc towards right. shooting pain is suffered in right leg wid lower back pain..i ave been takink acelofenac-200mg,pregaballin75mg,paracetamolwith codiene..550 mg for last 5 months.is surgery an only option..hw can exercise be a help..do i take shots of nandrolone deconate to strengthen muscles..and sir pls tell me for how long shots of methylocobalamin shots required..

### output:

Hi, It will be helpful if you mention your age and whether the shooting pain is present throughout the day or begins after walking for some distance. MRI findings are suggestive of degenerative changes of disc with prolapse and the resultant lumbar canal stenosis. These changes are less likely to be a sequela of your injury. Pregabalin helps to reduce the shooting pain. Strengthening of spinal flexors and abdominal muscles will be helpful as these align spine to a more accommodating position. Daily therapeutic walking (increasing the walking distance slowly) will be of help to increase the pain free walking distance(claudication distance). Surgery is not advisable unless you have severe intolerable pain despite adequate conservative management or have symptoms progressive neurological deficit (like decreased sensation in your limbs, weakness in your limbs, decreased control or sensation over bowel or bladder)Nan Chat Doctor. Methylcobalamin injection is usually given thrice a week for initial 2 months followed by once a month as maintenance dosage. Take care