Biomaterial Database

Trefoil configuration and developmental stenosis of the lumbar vertebral canal. 1995

T Papp, and R W Porter, and R M Aspden

University of Aberdeen, Scotland.

The midsagittal and interpedicular diameters and the trefoil shape of lumbar vertebrae of known age at death were measured in skeletons from a population aged between 1 and 70 years. All the trefoil configurations were at L5 with the exception of one at L4. The overall prevalence was 25%, but this shape was not generally apparent until adulthood. The midsagittal diameter in the trefoil canals was found to be significantly smaller than that in the unaffected canals. This did not change significantly after six years of age indicating that the cause of the trefoil configuration is probably present early in life. The trefoil shape was no more common in the spines of the elderly subjects. Our findings indicate that the trefoil configuration of the lumbar vertebral canal has a developmental origin and is not a consequence of degenerative processes.

UI	MeSH Term	Description	Entries
D007223	Infant	A child between 1 and 23 months of age.	Infants
D008159	Lumbar Vertebrae	VERTEBRAE in the region of the lower BACK below the THORACIC VERTEBRAE and above the SACRAL VERTEBRAE.	Vertebrae, Lumbar
D008297	Male		Males
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D049670	History, 17th Century	Time period from 1601 through 1700 of the common era.	17th Century History,17th Cent. History (Medicine),17th Cent. History of Medicine,17th Cent. Medicine,Historical Events, 17th Century,History of Medicine, 17th Cent.,History, Seventeenth Century,Medical History, 17th Cent.,Medicine, 17th Cent.,17th Cent. Histories (Medicine),17th Century Histories,Cent. Histories, 17th (Medicine),Century Histories, Seventeenth,Century History, 17th,Century History, Seventeenth,Histories, 17th Cent. (Medicine),Histories, 17th Century,Histories, Seventeenth Century,History, 17th Cent. (Medicine),Seventeenth Century Histories,Seventeenth Century History
D049671	History, 18th Century	Time period from 1701 through 1800 of the common era.	18th Century History,18th Cent. History (Medicine),18th Cent. History of Medicine,18th Cent. Medicine,Historical Events, 18th Century,History of Medicine, 18th Cent.,History, Eighteenth Century,Medical History, 18th Cent.,Medicine, 18th Cent.,18th Century Histories,Cent. History, 18th (Medicine),Cent. Medicine, 18th,Century Histories, 18th,Century Histories, Eighteenth,Century History, 18th,Century History, Eighteenth,Eighteenth Century Histories,Eighteenth Century History,Histories, 18th Century,Histories, Eighteenth Century,History, 18th Cent. (Medicine)
D049672	History, 19th Century	Time period from 1801 through 1900 of the common era.	19th Century History,19th Cent. History (Medicine),19th Cent. History of Medicine,19th Cent. Medicine,Historical Events, 19th Century,History of Medicine, 19th Cent.,History, Nineteenth Century,Medical History, 19th Cent.,Medicine, 19th Cent.,19th Cent. Histories (Medicine),19th Century Histories,Cent. Histories, 19th (Medicine),Cent. History, 19th (Medicine),Century Histories, 19th,Century Histories, Nineteenth,Century History, 19th,Century History, Nineteenth,Histories, 19th Cent. (Medicine),Histories, 19th Century,Histories, Nineteenth Century,History, 19th Cent. (Medicine),Nineteenth Century Histories,Nineteenth Century History