Assertion: spondylolisthesis | /r/CapableOf | affect the l5 / s1 level of the spine
Facets:
value: most commonly
type: DEGREE
Source sentences:
text: A spondylolisthesis most commonly affects the L5 / S1 level of the spine (at the base of the lower back), with the L5 vertebra slipping forwards relative to the S1 vertebra below.