Falx cerebelli
Updates to Article Attributes
Body
was changed:
The falx cerebelli is a small infolding of the dura in the sagittal plane over the floor of the posterior cranial fossa. It partially separates the two cerebellar hemispheres 1.
Gross anatomy
The falx cerebelli is attached posteriorly in the midline to the internal occipital crest of the occipital bone where it contains the occipital sinus 2. Its anterior edge exists freely between the partially separated cerebellar hemispheres in the posterior cerebellar notch. Superiorly it is attached to the tentorium cerebelli 1. Inferiorly, it extends to the posterior edge of the foramen magnum. At this point it sometimes divides into two separate parts which extend anteriorly either side of the foramen magnum 2-3.
Relations
- anteriorly: cerebellum
- posteriorly: occipital bone
- inferiorly: foramen magnum
- superiorly: tentorium cerebelli
Variant anatomy
- morphology can vary from linear to shapes resembling the letters “Y,” “V,” or “U”
- duplication or triplication of the falx cerebelli
- absence of the falx cerebelli in Chiari II malformation (rare) 4
Related pathology
-<li>duplication of the falx cerebelli</li>- +<li>morphology can vary from linear to shapes resembling the letters “Y,” “V,” or “U”</li>
- +<li>duplication or triplication of the falx cerebelli</li>
References changed:
- 5. Matthew T. Whitehead, Gilbert Vezina. The fetal falx cerebelli. (2020) Pediatric Radiology. 50 (7): 984. <a href="https://doi.org/10.1007/s00247-020-04641-0">doi:10.1007/s00247-020-04641-0</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/32185447">Pubmed</a> <span class="ref_v4"></span>
Unable to process the form. Check for errors and try again.