Filum durae matris spinalis

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Filum durae matris spinalis --> filum of spinal dura mater

The thread-like termination of the spinal dura mater, surrounding and fused to the filum terminale of the cord, and attached to the deep dorsal sacrococcygeal ligament; extends from S2-3 to co2 vertebral levels.

Synonym: filum durae matris spinalis.