listhesis

Etymology

From reanalysis of spondylolisthesis as spondylo- + listhesis. The second element would be more accurately written olisthesis; it is from Ancient Greek ὀλισθάνω (olisthánō, “to slip, to slide”). Compare olistostrome. The word first appears in a 1912 medical terminology reference.

noun

  1. A forward (anterior) displacement (slippage) of a vertebra over a lower segment.“Type 1 facetal malalignment was when the facet of atlas was dislocated anterior to the facet of axis on lateral imaging and simulates lumbosacral listhesis.”
  2. Any such displacement, anterior or otherwise.