I am 10 days post-op spinal fusion with instrumentation. Just a couple of days ago I began to notice weakness in both legs mainly when sitting or laying. My surgery was done due to herniated disc that was causing severe numbness and weakness in both arms and hands. There has also been something that feels like a not in my throat. How long will that last? A little more history I also had fusion with instrumentaion in my lower back in June 06. I have had mostly good results from that. Please let me know if it is normal for the leg weakness since cervical fusion.