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See spina.


(spi'na) plural.spinae [L. spina, thorn]
1. Any spinelike protuberance.
2. The spine.

spina bifida

Spina bifida cystica.

spina bifida cystica

A congenital defect in the walls of the spinal canal caused by a lack of union between the laminae of the vertebrae during embryonic development. The lumbar portion is the section chiefly affected. It is found in approx. 18 of every 100,000 births. Like other neural tube defects, it can be prevented with folic acid supplementation (800 mg daily) taken by women before and during pregnancy. The consequences of this defect may include urinary incontinence, saddle or limb anesthesia, gait disturbances, and structural changes in the pelvis. Synonym: rachischisis

spina bifida occulta

A failure of the vertebrae to close without hernial protrusion.
References in periodicals archive ?
7) At the date of the 1861 census he was stationed at Speen, Berkshire, as a 'police constable'.
During the hour-long service, the Reverend Peter Dewey, who was on the scene after the disaster to comfort victims, read out the names of the passengers and train diver who died in the crash - Anjanette Rossi, 38, and her daughter, Louella Main, nine, of Speen, Berkshire, Barry Strevens, 55, from Wells, Somerset, Leslie Charles Matthews, 72, of Warminster, Wiltshire, and Emily Webster, 14, from Moretonhampstead, Devon.