Thanks for using Healthcaremagic,
After going through history of your mother, she is suffering from Polyarthritis she needs to consult Internal medicine specialist or Rheumatologist
and usually causes are Osteoarthritis
, Rheumatoid arthritis
or some kind of connective tissue
She also had Thyroid issues which could be autoimmune in origin so a good work up is required treatment depends on exact diagnosis.
If severe osteoarthritis is there apart from medical treatment total knee replacement
can really help to get over pain.
If other type of arthritis is there there are good treatment available so please take care and do not ignore her health.
I can not comment about ayurvedic treatment.
Please take care.
Dr.Akhilesh Dubey M.D.