Assertion: pathologic spondylolisthesis | /r/HasProperty | rare
Facets:
value: very
type: DEGREE
Source sentences:
text: Pathologic spondylolisthesis is the last type and is also very rare.
text: Pathologic spondylolisthesis is a rare type that occurs due to damage to the posterior elements of the spine that may arise from a variety of causes.