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Lumbosacral transitional vertebrae consist of the process of the last lumbar vertebra fusing with the first sacral segment. [1] While only around 10 percent of adults have a spinal abnormality due to genetics, a sixth lumbar vertebra is one of the more common abnormalities. [2] Sacralization of the L5 vertebra is seen at the lower right of the ...
Spinal muscular atrophy (SMA) is a rare neuromuscular disorder that results in the loss of motor neurons and progressive muscle wasting. [3] [4] [5] It is usually diagnosed in infancy or early childhood and if left untreated it is the most common genetic cause of infant death. [6]
Congenital dermal sinus is an uncommon form of cranial or spinal dysraphism. [2] [3] It occurs in 1 in 2500 live births. [3]It occurs as a dermal indentation, found along the midline of the neuraxis and often presents alongside infection and neurological deficit. [2]
Many people with this type of spina bifida do not even know they have it, as the condition is asymptomatic in most cases. [21] A systematic review of radiographic research studies found no relationship between spina bifida occulta and back pain. [23] More recent studies not included in the review support the negative findings. [24] [25] [26]
The conus medullaris (or lower termination of the spinal cord) normally terminates at or above the L1-2 disk space (where L1 is the first, or topmost lumbar vertebra). After about 3 months of age, a conus below the L1-2 disk space may indicate a tethered cord and termination below L3-4 is unmistakably tethered.
It is a congenital disorder in which the fetal development of the lower spine—the caudal partition of the spine—is abnormal. [1] It occurs at a rate of approximately one per 60,000 live births. [2] Some babies are born with very small differences compared to typical development, and others have significant changes.
In neurology, a lipomyelomeningocele is a type of closed neural tube defect that affects around 3 to 6 babies out of 100,000 births. [1] [2] It is an example of a spinal lipoma, which is a collection of adipose tissue, or fat, that is located at or around the spinal cord.
An elevated MSAFP measured at 16–18 weeks gestation is a good predictor of open neural tube defects, however the test has a very high false positive rate, (2% of all women tested in Ontario, Canada between 1993 and 2000 tested positive without having an open neural tube defect, although 5% is the commonly quoted result worldwide) and only a ...