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Lordose lombar: estudo dos valores angulares e da participa??o dos corpos vertebrais e discos intervertebrais

DOI: 10.1590/S1413-78522006000400003

Keywords: lumbosacral region, lordosis, lumbar vertebrae, intervertebral disc.

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Abstract:

the angular value of lumbar lordosis and the role of vertebral bodies and intervertebral discs in its constitution were studied in normal individuals. x-ray images of lumbar spine were studied in 350 normal and asymptomatic individuals, ages ranging from 18 to 50 years old (average 29.0 years old ± 8.24), being 143 males and 207 females. the lumbosacral (l1s1) and the lumbolumbar (l1l5) curves were measured. measurements for lumbar curves and their components presented a large variation. average values of -61o were seen for lumbosacral curve and of -45o for lumbolumbar curve. vertebral bodies measurements presented kyphotic values for l1, neutral for l2, and progressively lordotic for l3 - l5. intervertebral discs presented a progressive lordotic angulation from l1-l2. caudal elements of curvature, intervertebral discs l4-l5 and l5-s1 and the vertebral body l5 accounted for nearly 60% of the angular measurement of lumbosacral curvature. a significant difference was seen between males and females for lumbar curvature measurements, and for vertebral bodies l2 and l4, with females presenting higher values. age-related differences were found in lumbar curvature and vertebral bodies measurements.

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