Dr. Joshua U. Okonkwo (Neurology): An 80-year-old man was evaluated in the neurology clinic of this hospital because of left foot drop. The patient had been in his usual state of health until 5 years ...

For more than a decade, Diana Roberts lived with the effects of multiple sclerosis, particularly the dropped-foot syndrome. “It started when I couldn’t feel my feet,” she said. “And the numbness ...