Paradoxical motion in spondylolisthesis due to two-segment instability.

Abstract:

:We report here a paradoxical motion in unstable spondylolytic spondylolisthesis: a more forward displacement of the L5 vertebral body on the sacrum on the standing extension view than on the standing flexion view. An axial loading through the inferior articular process of the posteriorly displaced L4 on extension appears to be the cause, while the instability in the two contiguous segments may be an important contributing factor.

authors

Ehara S,Shimamura T

doi

10.1007/BF00434009

subject

Has Abstract

pub_date

1997-01-01 00:00:00

pages

435-6

issue

6-7

eissn

0936-8051

issn

1434-3916

journal_volume

116

pub_type

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