Congenital upper thoracic spondyloptosis with multiple other associated anomalies.

摘要

Spondyloptosis indicates any slip greater than 100% of a vertebral body on another or an extreme degree of spondylolisthesis. It is rare and there are isolated case reports in the literature.1-2 It frequently involves the L5-S1 level. It is attributed to congenital dysplasia of the articular process.