spine facet arthropathyarthropathy of lumbar facet jointlumbar facet diseaselumbar arthropathyfacet joint arthropathy treatmentlumbar facet arthrosislumbar facet arthritislumbar facet degenerationlumbar spine facet hypertrophytreatment for lumbar facet syndromebilateral facet joint arthropathymild lower lumbar facet arthropathy