If a 5-7 degree caudal tube angle were applied to the L5-S1 spot on the patient in the image, what would result?
L5-S1 would appear closed
undeterminable
L5-S1 would appear open
L5-S1 would appear rotated
L5-S1 would appear closed
Rationale: If the lateral lumbar projection displays the L5-S1 joint space to be open, adding a tube angle will close off the space.
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