What Causes Spinal Stenosis?
Probably lumbar canal stenosis.
Detailed Answer:
Hi, I have gone through your question and understand your concerns.
If the pain is radiated in both legs, even one leg worse than the other, your symptoms are most probably caused by spinal stenosis.
This is supported by the fact of being overweight also.
Lumbar stenosis can be related to herniated disc disease, spondylolysthesis (slipped vertebrae) or severe arthritis.
Imaging studies are needed to achieve a correct diagnosis and these include x-rays of lumbar column in neutral, flexed and extended position, lumbar column MRI.
I suggest you to discuss with a Neurologist about tests needed and to have a neurological examination of your concerns.
Treatment depends on diagnosis.
Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions.