filum of spinal dura mater

dural part of filum terminale

[TA]
the threadlike 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.
See also: terminal filum.

fi·lum of spi·nal du·ra ma·ter

(fī'lŭm spī'năl dūr'ă mā'tĕr)
The threadlike 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.