![]() Is lumbar facet joint tropism developmental or secondary to degeneration? An international, large-scale multicenter study by the AOSpine Asia Pacific Research Collaboration Consortium. Samartzis D, Cheung JP, Rajasekaran S, Kawaguchi Y, Acharya S, Kawakami M, Satoh S, Chen WJ, Park CK, Lee CS, Foocharoen T, Nagashima H, Kuh S, Zheng Z, Condor R, Ito M, Iwasaki M, Jeong JH, Luk KD, Prijambodo B, Rege A, Jahng TA, Luo Z, Tassanawipas WA, Acharya N, Pokharel R, Shen Y, Ito T, Zhang Z, Aithala P J, Kumar GV, Jabir RA, Basu S, Li B, Moudgil V, Goss B, Sham P, Williams R. (2009) Current Reviews in Musculoskeletal Medicine. Read it at Google Books - Find it at Amazon ![]() the L1 medial branch innervates the L1/2 and L2/3 facet joints) 5, knowledge of which is important when performing medial branch blocks and ablations. The significance of the manipulative crack and other articular noises. Each medial branch innervates the facet joint of its level and the facet joint below (e.g. An investigation into the production of intra-articular gas bubbles and increase in joint space in the zygapophyseal joints of the cervical spine in asymptomatic subjects after spinal manipulation. Pain sensation of the facet joint capsule and synovial folds is provided by the medial branch of the dorsal ramus 3. These bony pillars extend from each side of the vertebra toward the back and are the articular bones that. The facet joints kept fixed in position by the posterior ligamentous complex. Each facet joint contains: Two articular processes. Variation in the orientation of the two facet joints at the same level is not uncommon and known as facet joint tropism. ~ 33 % of dynamic compressive load and 35 % of static load may be sustained by lumbar facet joints 3 superior and inferior articular processes of consecutive lumbar vertebra. Lumbar facet joints are critical stabilizers of the motion segment preventing translation and excessive amounts of rotation and flexion Oriented in the sagittal plane with curved joint surfaces so best viewed in the axial plane In the sagittal plane, the facet joints lie almost vertically In the sagittal plane, the facet joints slope from anterosuperior to posteroinferior Oriented in the coronal plane so best viewed in the axial and sagittal planes The facets joints however do demonstrate some regional variation in orientation and morphology: The facet joints are formed by two articular processes of adjacent vertebrae, with the superior articular process of one vertebra located immediately anterior to the inferior articular process of the vertebra below. They are symmetrical synovial-lined joints with a fibrous capsule that connect the articular facets of the vertebrae. The facet joints are situated between the pedicle and lamina of the same vertebra and form the articular pillars that act to provide structural stability to the vertebral column as a whole.
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