The authors stated that Michael Jackson challenged our understanding of the modes and mechanisms of movement, the limits of movement, and therefore mechanisms of spinal injury. Dancers often try to perform increasingly challenging moves that may create stresses on the spine that can cause injury.
Joints of the Lumbar Spine (disc & facet) and Pelvis
In the lumbar spine, three joints are located between each two adjacent vertebrae: one disc joint and two paired (left and right) facet joints.