Thanks!! My Dad's pain is localized in one leg, starting from

hip/buttock area down to shin. The pain moves around. He can only walk a few hundred steps and then must sit down, rest for a few minutes he can walk again. His gait appears a little bit odd, as if he's not using as much of his heels. Could this be related to the problem with reflex as you were referring to? 

Is the neck surgery more complicated than lumbar? Does it take longer?

Thank you so much, doctor! I truly appreciate it.