Dysostosis

Dysostosis
Classification and external resources
DiseasesDB	31424
MeSH	D004413

A dysostosis is a disorder of the development of bone, in particular affecting ossification.^[1]

Examples include craniofacial dysostosis, Klippel-Feil syndrome, and Rubinstein-Taybi syndrome.

It is one of the two categories of constitutional disorders of bone (the other being osteochondrodysplasia).^[2]

When the disorder involves the joint between two bones, the term synostosis is often used.

References

↑ "dysostosis" at Dorland's Medical Dictionary
↑ Offiah AC, Hall CM (March 2003). "Radiological diagnosis of the constitutional disorders of bone. As easy as A, B, C?". Pediatr Radiol 33 (3): 153–61. doi:10.1007/s00247-002-0855-8. PMID 12612812.

Congenital malformations and deformations of musculoskeletal system / musculoskeletal abnormality (Q65–Q76, 754–756.3)

Appendicular
limb / dysmelia

Arms

clavicle / shoulder:	Cleidocranial dysostosis Sprengel's deformity Wallis–Zieff–Goldblatt syndrome

hand deformity:	Madelung's deformity Clinodactyly Oligodactyly Polydactyly

Leg

hip:	Dislocation of hip / Hip dysplasia Upington disease Coxa valga Coxa vara

knee:	Genu valgum Genu varum Genu recurvatum Discoid meniscus Congenital patellar dislocation Congenital knee dislocation

foot deformity:	varus Club foot Pigeon toe valgus Flat feet Pes cavus Rocker bottom foot Hammer toe

Either / both

fingers and toes	Polydactyly / Syndactyly webbed toes Arachnodactyly Cenani–Lenz syndactylism Ectrodactyly Brachydactyly Clubbed thumb

reduction deficits / limb:	Acheiropodia ectromelia Phocomelia Amelia Hemimelia

multiple joints:	Arthrogryposis Larsen syndrome Rapadilino syndrome

Axial

Skull and face

Craniosynostosis:	Scaphocephaly Oxycephaly Trigonocephaly

Craniofacial dysostosis:	Crouzon syndrome Hypertelorism Hallermann–Streiff syndrome Treacher Collins syndrome

other:	Macrocephaly Platybasia Craniodiaphyseal dysplasia Dolichocephaly Greig cephalopolysyndactyly syndrome Plagiocephaly Saddle nose

Vertebral column

Thoracic skeleton

ribs:	Cervical Bifid

sternum:	Pectus excavatum Pectus carinatum

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