SpineFull access
Flexion and extension views of the spine
Laterals bent forward and back to show abnormal motion; the patient moves, you never force it.
Why they are ordered
Flexion and extension views are lateral images taken with the spine bent forward and then back. They show instability: one vertebra sliding on another more than it should, from a ligament injury, spondylolisthesis, or a fusion that has not healed. Neutral laterals cannot show that, because the problem only appears with motion. Each image is marked FLEXION or EXTENSION.