I've seen my fair share of patients with severe stenosis that have only axial lbp without neurogenic claudication. Their back pain is worse with extension, prolonged standing and walking. Universally these guys have not responded consistently to facet interventions as one would expect (b/c that's what I initially targeted in my first 7-8 years in practice). Had I not obtained the MRI, I would have had no idea that they had severe multifactorial stenosis. In addition, doing an interlaminar at a level of severe stenosis could cause more harm than good.