Which vertebral level is specifically evaluated by the Ferguson tilt-up view in pars fractures?

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Multiple Choice

Which vertebral level is specifically evaluated by the Ferguson tilt-up view in pars fractures?

Explanation:
The Ferguson tilt-up view is a specialized lumbar radiograph designed to visualize the pars interarticularis. It tilts the patient so the L5 pars lies in profile with less overlap from the sacrum and iliac wings, making a pars fracture more conspicuous on X-ray. Since stress fractures of the pars most commonly occur at the L5 level, this view specifically targets L5. Other levels like L1, L3, or S1 are not the focus of this projection because the typical site of pars defects and the projection's orientation are at the lower lumbar spine, especially L5.

The Ferguson tilt-up view is a specialized lumbar radiograph designed to visualize the pars interarticularis. It tilts the patient so the L5 pars lies in profile with less overlap from the sacrum and iliac wings, making a pars fracture more conspicuous on X-ray. Since stress fractures of the pars most commonly occur at the L5 level, this view specifically targets L5. Other levels like L1, L3, or S1 are not the focus of this projection because the typical site of pars defects and the projection's orientation are at the lower lumbar spine, especially L5.

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