Platybasia is a spinal disease of a malformed relationship between the occipital bone and cervical spine.
It may be caused by Paget's disease. Platybasia is also a feature of Gorlin-Goltz syndrome, commonly known as basal cell nevus syndrome.
It may be developmental in origin or due to softening of the skull base bone, allowing it to be pushed upward.The developmental variant is the result of a wider angle between the skull base of the frontal or anterior fossa and the clivus, which defines the anterior wall of the posterior fossa. It is sometimes associated with other congenital abnormalities of the bone structure, such as fusion of the first cervical vertebrae to the skull atlas assimilation.
Further reading
- Pearce JM (2007). "Platybasia and basilar invagination". Eur. Neurol. 58 (1): 62–4. doi:10.1159/000102172. PMID 17483591.
External links
Congenital malformations and deformations of musculoskeletal system / musculoskeletal abnormality |
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Appendicular limb / dysmelia | Arms | clavicle / shoulder |
- Cleidocranial dysostosis
- Sprengel's deformity
- Wallis–Zieff–Goldblatt syndrome
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hand deformity |
- Madelung's deformity
- Clinodactyly
- Oligodactyly
- Polydactyly
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Leg | hip |
- Hip dislocation / Hip dysplasia
- Upington disease
- Coxa valga
- Coxa vara
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knee |
- Genu valgum
- Genu varum
- Genu recurvatum
- Discoid meniscus
- Congenital patellar dislocation
- Congenital knee dislocation
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foot deformity |
- varus
- valgus
- Pes cavus
- Rocker bottom foot
- Hammer toe
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Either / both | fingers and toes |
- Polydactyly / Syndactyly
- Arachnodactyly
- Cenani–Lenz syndactylism
- Ectrodactyly
- Brachydactyly
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reduction deficits / limb |
- Acheiropodia
- Ectromelia
- Phocomelia
- Amelia
- Hemimelia
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multiple joints |
- Arthrogryposis
- Larsen syndrome
- RAPADILINO syndrome
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Axial | Skull and face | Craniosynostosis |
- Scaphocephaly
- Oxycephaly
- Trigonocephaly
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Craniofacial dysostosis |
- Crouzon syndrome
- Hypertelorism
- Hallermann–Streiff syndrome
- Treacher Collins syndrome
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other |
- Macrocephaly
- Platybasia
- Craniodiaphyseal dysplasia
- Dolichocephaly
- Greig cephalopolysyndactyly syndrome
- Plagiocephaly
- Saddle nose
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Vertebral column |
- Spinal curvature
- Klippel–Feil syndrome
- Spondylolisthesis
- Spina bifida occulta
- Sacralization
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Thoracic skeleton | ribs: | |
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sternum: |
- Pectus excavatum
- Pectus carinatum
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