What Causes Pain In Right Leg Causing Difficulty In Walking?

Hi, may I answer your health queries right now ? Please type your query here...Hi, my husband has been unable to walk because of extreme pain in his right leg. Been to Dr's and has had a MRI and cat scans. MRI shows L4 L5 hurniated discs also bulging S1. He is getting very depressed I'm worried about him. What do I do for him?