Citation, DOI & article data
Platybasia alone does not usually cause symptoms unless it is associated with basilar invagination 6.
A number of techniques have been described to measure platybasia 1.
- standard measurement: the angle formed by a line joining the nasion with the center of the pituitary fossa and a line joining the anterior border of the foramen magnum with the center of the pituitary fossa 1
- modified measurement: the angle formed by a line extending across the anterior cranial fossa to the tip to the dorsum sellae and a line drawn along the posterior margin of the clivus 1
- adult normal value range: 116°-118°
- children normal range: 113°-115°
- 1. Koenigsberg RA, Vakil N, Hong TA et-al. Evaluation of platybasia with MR imaging. AJNR Am J Neuroradiol. 2005;26 (1): 89-92. AJNR Am J Neuroradiol (full text) - Pubmed citation
- 2. Bhargava S. Differential Diagnosis in Radiology. Jp Medical Ltd. ISBN:9351521737. Read it at Google Books - Find it at Amazon
- 3. Yousem DM. Head and Neck Imaging: Case Review Series. Saunders. ISBN:B00NTWA218. Read it at Google Books - Find it at Amazon
- 4. Chen YF, Liu HM. Imaging of craniovertebral junction. Neuroimaging Clin. N. Am. 2009;19 (3): 483-510. doi:10.1016/j.nic.2009.06.002 - Pubmed citation
- 5. Wright KW, Strube YNJ. Pediatric Ophthalmology and Strabismus. Oxford University Press. ISBN:0199857016. Read it at Google Books - Find it at Amazon
- 6. Ferreira J, Ferreira BR, Ferreira. Determination of Normal Values of the Basal Angle in the Era of Magnetic Resonance Imaging. (2019) World neurosurgery. doi:10.1016/j.wneu.2019.09.056 - Pubmed