What views should you take for a patient with pain in an area of previous surgical fusion?

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What views should you take for a patient with pain in an area of previous surgical fusion?

Dynamic flexion–extension radiographs test stability across a spinal fusion by capturing the patient bending forward and backward. If the fusion is solid, the fused segment should show minimal movement; any measurable motion across the fused level suggests instability or nonunion (pseudoarthrosis), which can explain pain. These views are especially helpful because they reveal how the adjoining segments behave under load and can uncover instability that static AP or lateral views might miss. Static views are still useful to assess hardware position and alignment, but they don’t reveal motion at the fusion site. MRI or CT can be used for further evaluation if nonunion or other complications are suspected, but the dynamic views specifically address stability after a fusion.

Dynamic flexion–extension radiographs test stability across a spinal fusion by capturing the patient bending forward and backward. If the fusion is solid, the fused segment should show minimal movement; any measurable motion across the fused level suggests instability or nonunion (pseudoarthrosis), which can explain pain. These views are especially helpful because they reveal how the adjoining segments behave under load and can uncover instability that static AP or lateral views might miss. Static views are still useful to assess hardware position and alignment, but they don’t reveal motion at the fusion site. MRI or CT can be used for further evaluation if nonunion or other complications are suspected, but the dynamic views specifically address stability after a fusion.

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