Assertion: spondylolisthesis's vertebra | /r/HasProperty | fused to the vertebra
Facets:
value: below it
type: LOCATION
value: surgically
type: MANNER
value: for cases with severe pain
type: PURPOSE
Source sentences:
text: For cases with severe pain not responding to therapy, if the slip is severe or there are neurologic changes, the slipping vertebra might be surgically fused to the vertebra below it.