Hi welcome to Health care magic forum. Your 35 years old sister has difficulty in lifting the right hand, and difficulty in walking.Probably you haven't shown the MRI
to the neurosurgeon. There will be so many things which are not shown in MRI. the doctor has to co relate the symptoms to the findings, If no findings he may ask to repeat in different planes.
In cervical spondilosis, the restricted movement of the arm will be there but no effect on the walking will be there. And there will be so many things which are not relevant inMRI of brain, like arthritis
of shoulder, and hip, or some other metabolic diseases.you follow your neurologists advise and let him treat her in a systamatic manner.
Besides i advise you some diet recommendations as avoid taking potato, other tubers, tomato, egg, chicken, and sea foods, till she gets relief. Wishing her a quick recovery and thanks for calling.