Hi there. Thank you for posting your question with Healthcaremagic. I will do my best to help you.
What you describe here may be referred pain
from your L4 L5 problem. In any case a MRI
scan will help sort this out. An X-ray of your hip joints might also be a good idea. You need a diagnosis.
I hope that I have answered your questions fully and been of some help. If you have anymore questions please contact me again anytime.
Dr Andrew Rynne.