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Foraminal changes with distraction and compression of the L4/5 and L5/S1 segments

โœ Scribed by Th. Humke; D. Grob; W. Grauer; A. Sandler; J. Dvorak

Publisher
Springer
Year
1996
Tongue
English
Weight
628 KB
Volume
5
Category
Article
ISSN
0940-6719

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โœฆ Synopsis

The width of the foramen in the lumbar spine is directly related to the position of the vertebrae. In an MRI study the measurements of the cross-sectional area of the neuroforamen of L4/5 and L5/S1 in neutral position, segmental distraction and compression were calculated. Nine cadaver specimens were investigated and the foraminal width of L4/5 and L5/S1 was measured. In both segments of all specimens the foraminal space significantly enlarged under distraction and decreased under compression. In the L4/5 segment the average relative difference between distraction and compression was 27%.

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