In almost all cases, the diseased joints were the facet joints of the lumbar spine (L3/L4 = 30 cases; L4/L5 = 145 cases; L5/L6 = 128 cases); only two cases involved the cervical spine (C6/C7).

Chronic pain in the lumbar region is extremely ... alteration or irritation of the facet joints that leads to the painful condition. Facet syndrome occurs as a result of synovitis or disruption.

facet joint syndrome in the region of the upper thoracic spine. Common triggers include a fall on the shoulders, axial injuries of the cervical spine, or acceleration injuries in traffic accidents.