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Experimental Factor Ontology
Last uploaded:
January 16, 2025
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| Id | http://purl.obolibrary.org/obo/HP_0000248
http://purl.obolibrary.org/obo/HP_0000248
|
|---|---|
| Preferred Name | Brachycephaly |
| Definitions |
An abnormality of skull shape characterized by a decreased anterior-posterior diameter. That is, a cephalic index greater than 81%. Alternatively, an apparently shortened anteroposterior dimension (length) of the head compared to width.
Cephalic index is the ratio of head width expressed as a percentage of head length. The normal range is 76-80.9%. Head length is measured between the glabella (the most prominent point on the frontal bone above the root of the nose) and the most prominent part of the occiput in the midline, using spreading calipers. Head width is measured between the most lateral points of the parietal bones on each side of the head, using spreading calipers. Cephalic index standards are derived from Caucasians and have limited relevance for other races and ethnicities. Current norms also have limited validity because of changes in infant sleeping position and consequent changes in head shape. New data should be developed. Brachycephaly is distinct from Flat occiput, but both can be present in the same individual and should be coded separately.
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| Synonyms |
Broad cranium shape
Broad skull shape
Wide head shape
Wide cranium shape
Wide skull shape
Broad head shape
Short and broad skull
|
| Type | http://www.w3.org/2002/07/owl#Class |
All Properties
| definition | An abnormality of skull shape characterized by a decreased anterior-posterior diameter. That is, a cephalic index greater than 81%. Alternatively, an apparently shortened anteroposterior dimension (length) of the head compared to width. |
|---|---|
| preferred label |
Brachycephaly
|
| label |
Brachycephaly
|
| comment |
Cephalic index is the ratio of head width expressed as a percentage of head length. The normal range is 76-80.9%. Head length is measured between the glabella (the most prominent point on the frontal bone above the root of the nose) and the most prominent part of the occiput in the midline, using spreading calipers. Head width is measured between the most lateral points of the parietal bones on each side of the head, using spreading calipers. Cephalic index standards are derived from Caucasians and have limited relevance for other races and ethnicities. Current norms also have limited validity because of changes in infant sleeping position and consequent changes in head shape. New data should be developed. Brachycephaly is distinct from Flat occiput, but both can be present in the same individual and should be coded separately.
|
| prefLabel |
Brachycephaly
|
| database_cross_reference |
UMLS:C4072824
UMLS:C4072823
SNOMEDCT_US:13649004
UMLS:C0221356
|
| notation |
HP:0000248
|
| in_subset | |
| id |
HP:0000248
|
| subClassOf | |
| has_alternative_id |
HP:0002258
HP:0004479
HP:0008512
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| type | |
| has_broad_synonym |
Broad cranium shape
Broad skull shape
Wide head shape
Wide cranium shape
Wide skull shape
Broad head shape
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See less
|
| has_exact_synonym |
Short and broad skull
|
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