interfacetal joints Facet joints What is a Facet Joint? http://en.wikipedia.org/wiki/Zygapophysial_joint Facet joints facet joints facet facet joints Facet joints zygapophyseal joints interfacetal joints joint irritation facet joints facet joint facet joints facet facet joint facet joints facet joints "facet joints" Facet joints http://en.wikipedia.org/wiki/Zygapophysial_joint en.wikipedia.org facet joint facet joint facet joints facet joints facet joints zygapophysial joints