Fig. 3From: Comparison of the effectiveness of ultrasound-guided versus fluoroscopy-guided medial lumbar bundle branch block on pain related to lumbar facet joints: a multicenter randomized controlled non-inferiority studyFacet joints of spine’s anatomy. Facet syndrome is a pain that can originate from any structure of the facet joints; fibrous capsule, synovial membrane, hyaline cartilage and boneBack to article page