Structure
The filum terminale externum is composed of both pia mater and dura mater and is the terminal portion of the filum terminale. The pia mater that contributes to the filum terminale internum merges with the overlaying spinal dura. It starts within a few centimeters of the coccyx and terminates when the filum terminale externum attaches to the coccyx.
Related parts of the anatomy
Key Features/Anatomical Relations
The filum terminale externum is located where the pia and dura mater layers merge, and is approximately 5cm long (Standring, 2016). It is the terminal end of the filum terminale and helps anchor the spinal cord to the coccyx.
References
Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41 edn.: Elsevier Limited.
Learn more about this topic from other Elsevier products
Filum Terminale
The filum terminale is a fibrous band extending from the distal tip of the spinal cord and attaching to the first coccygeal segment.
