After having L5 through T10 fused I have severe leg cramps only while sleeping. Its always the left lowerleg. These cramps wake me up, and can last up to 20 minuets. Ive tried at least 7 different meds. ,even the ones meant for R.L.S.  The pills seem to work for about a week or two, ten stop working. Should I assume that itsrelated to my back?
Hi, welcome to our site. I am Chat Doctor. Read your query. That is a very significant question and I appreciate your problem. I will try my best to answer your query think it is definitely because of your back. There are nerves that arise from the spinal cord. They come out through small apertures between the bones. There is a possibility that during the fusion, these apertures were narrowed. This causes undue pressure on the nerves. This may lead to symptoms like pain, tingling, numbness and weakness. The symptoms are usually bilateral but more severe on one side would suggest repeating an MRI. I hope this helps you. Inform the reports mentioned above so I can be of help further. Best of luck. I have given you the answer to the maximum considering the information provided. The results of the tests could further enhance my answer to you. Please do understand that some details could be extracted from a detailed history and examination. Looking forward to your return query with the details asked so that I can help you further.(If the answer has helped you, please indicate this)