muscle spasm
"I suffer from lower back pain. I had a back fusion in November 2013 about 6 months ago I started having really bad back spasms around the area they did the fusion which was my L-5/S-1.  They had me on Flexeril but did not help they tried the Valium and it works. I do not take it every day only when I have the spasms between that and the Percocet it is the only thing that works.  But I only take them as needed."