Inverted Mercedes-Benz sign

Last revised by Dr Daniel J Bell on 07 May 2021

The inverted Mercedes-Benz sign refers to the shape taken on by a spinal subdural hematoma on axial imaging at the level of the denticulate ligaments, best visualized on MRI. A pair of denticulate ligaments and the dorsal septum constitute the three radiating spikes of the sign, while blood expands and fills the three loculations in-between.

Not to be confused with the Mercedes-Benz sign.

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Cases and figures

  • An inverted Mercedes-Benz sign
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  • Case 1
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