Left subarticular zone disc extrusion with nerve root impingement
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L4/5 central and left subarticular zone disc extrusion with impingement of the descending left L5 nerve root. No L4/5 foraminal narrowing.
1 case question available
Appropriate and accurate use of terminology in lumbar disc disease is important. Careful review of the subarticular zone is worthwhile because it is a common site (along with the foraminal zone) of nerve root impingement.