My pain management doctor suggested this procedure to alleviate my lower back pain due to stenosis. A spacer would be placed between L3 and L4 plus L4 and L5. Several reviews I have read reported good results with pain. It can be removed if it doesn’t work so this is a plus for me. Recovery time is 6-9 weeks as opposed to 6-12 months with a fusion. I will probably choose this route rather than the fusion surgery. I am right outside of Houston and several doctors in the area offer this procedure.