[spon″dĭ-li-ze´mah] downward displacement of a vertebra because of destruction or softening of the one below it.
spondylizema
S15-887360 (spŏn″dĭl-ĭ-zē′mă) [Gr. spondylos, vertebra, + izema, depression] Downward displacement of a vertebra caused by the disintegration of the one below it.