The orientation of the facet joints in the thoracic spine causes the facets to function best in which of the following functions?
a. Limiting lateral flexion
b. Limiting rotation
c. Limiting extension
d. Limiting lateral translation
ANS: C
All motions are possible in the thoracic spine, but the ranges of flexion and extension are
extremely limited by the rigidity of the rib cage and by the orientation of the facet joint in the
frontal plane.
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