I had a discectomy in 07/2006 at L3-4. Ive had a numb area in my left thigh and my left foot gets hot ever since. Its my understanding the the sympathetic nerve system can lead to some unexplained sensations. If the bad pain is gone be really glad about that and learn to deal with the rest. The only thing that is absolute about back pain and surgery is that its predictably unpredictable.
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