Dear Gupta Ji,
A distinctive weakness is a symptom of "Minor Stroke" or some other CNS related issue.
I am really surprised as why the treating neurologist didn't opted for a MRI of the brain.
The orthopaedician has done correctly (MRI spine) as there was an element of numbness/weakness in your toes and hands, for which he wanted to rule out disc involvement.
So i would suggest you to have a second opinion, if the weakness persists, and get an MRI of brain done.
However if the MRI brain comes out normal, then physiotherapy will be the only option left for us.
Feel free to discuss more, in case of any doubts.
Same for me and it was a cavernous agioma in the pons in the brainstem. Get an mri of the brain.