Spondylolisthesis - Medical Disability Guidelines
Spondylolisthesis - in my case, the L5 vertebra has slipped forward over the S1, pinching the spinal nerve (causing sciatica). Note that the bony pars ring is actually broken; spondy is sometimes called a "broken back." I also have scoliosis. Yay for yoga, which is a huge help in managing all this!