@gak
What has your orthopedic spine specialist told you about surgical options and outcomes? Have you read through your lumbar MRI report to see what it says? Do you have any bone spurs and do you have degenerative disc disease? Is your spinal cord compressed or only your nerve roots?

The injection may not have worked if they did not do it near your compression. It would be good to try injections a couple more times before moving to surgery. I did have improvement the first 3 injections but the last 3 did not work and then I moved to surgery.

Have you been to a neurologist for an EMG/nerve conduction study of your lower limbs? Have you had a MRI of hips to see if you have any joint or soft tissue injury/damage?

You want to make sure to narrow down the source of your pain/symptoms before moving to surgery. Your surgeon needs to make sure they can provide you relief through surgery.