<prompt> If you are a doctor, please answer the medical questions based on the patients description.My husband is 80 years old and has dementia. His problem now is that is right knee is swollen and giving him a lot of pain. I think he should see an orthopedic doctor but I don t know if it should be a doctor or a surgeon. Could recommend what I can do? What doctor I should take him to?  <response>: Hello! I read your question and I understand your concern. In my opinion the swollen knee is not related to any neurological problem. I think the main cause of his problems is arthritis from degeneration of the bones and ligaments of this joint. I would like to know if he has had any trauma or fall. Furthermore, I would recommend you to consult with a rheumatologist first and have a full blood work, inflammation tests and a X-ray of the knee. If a traumatic injury or fracture suspected in the X-ray I recommend you to consult with an orthopedist. An MRI of the knee would examine better the problem. Hope to have been helpful! Best wishes 