I had back surgery of two fusion on November 11, 2011 and still having problem with sitting, standing and walking for more than 20-30 minutes 0n dis L-4-L-5 and S1. Received another MRI on 11-21-12, which reads as follow: At L-3-L-4, there is diffuse disc herniation by approx. 2.8 mm, causing mild narrowing of the spinal canal and bilateral neural formation. At L-4-L-5, there is enhancing epidural soft tissue on the right side, including including the right lateral recess, consistent with granulation tissue. There is resultant mild to moderate narrowing of the right neutral foramen and lateral recess. The left neural foramen is patent. What does this mean?