My husband is 74 years old, has developed a limp for no apparent reason which is becoming increasingly worse, almost to the point he cant walk more than a very short distance starts to drag his foot. have been to three neurologists, had brain scans, muscle and nerve tests in the process of having back mris but he is getting worse and more depressed each day. where should I take him. he had seeds for prostate cancer and radiation six years ago. he has no pain