Trefoil appearance of spinal canal

Last revised by Dr Yuranga Weerakkody on 30 Aug 2021

A trefoil appearance of spinal canal (sometimes termed as a clover leaf spinal canal appearance) is a particular shaped that results from congenital or acquired causes. This is mainly described in the lumber region and can result in narrowing of the lateral recesess as well as at times an anteroposterior dimension on the central canal.

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