anterolisthesis


an·te·ro·lis·the·sis

(an'tĕr-ō-lis'thĕ-sis) Forward displacement of a vertebral body with respect to the vertebral body immediately below it, due to congenital anomaly, degenerative change, or trauma.
Synonym(s): spondylolisthesis.
[antero- + G. olisthēsis, a slipping]