What does it mean to me and what should i do if i have "chronic bilateral pars defects at l5"?

Me too!: Bilateral pars defects are genetic defects of the spine that mean that the joints that hold the spine together at that are, and you could be more prone to spondylolisthesis--the top vertebra slipping over the bottom, which can case back pain, and radicular pain from pinched nerves. My mother had this, and so do i. Mine caught earlier because i was a gymnast--didn't know i had this until too late.