Synostosis
Encyclopedia
Synostosis is the abnormal fusion of neighbor bones. It is a type of dysostosis
Dysostosis
A dysostosis is a disorder of the development of bone, in particular affecting ossification.Examples include craniofacial dysostosis, Klippel-Feil syndrome, and Rubinstein-Taybi syndrome....

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Examples of synostoses include: craniosynostosis
Craniosynostosis
Craniosynostosis is a condition in which one or more of the fibrous sutures in an infant skull prematurely fuses by ossification, thereby changing the growth pattern of the skull...

- being an abnormal fusion of two or more cranial bones, radio-ulnar synostosis- being the abnormal fusion of the radius and ulna bones of the forearm, tarsal coalition - being a failure to separately form all seven bones of the tarsus (the hind part of the foot) resulting in an amalgmation of two bones and syndactyly
Syndactyly
Syndactyly is a condition wherein two or more digits are fused together. It occurs normally in some mammals, such as the siamang and kangaroo, but is an unusual condition in humans.-Classification:...

- being the abnormal fusion of neighboring digits.

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