A comparative study on lumbar lordosis by weight-bearing and recumbent magnetic resonance imaging
Objective To compare the differences of lumbar lordosis assessed on weight-bearing magnetic resonance imaging(MRI)and recumbent MRI images.Methods Both weight-bearing MRI and recumbent MRI were employed for 24 subjects.The MRI images were retrospectively reviewed.Six parameters including Cobb's angle,four-line Cobb's angle,sacral angle,lumbar height,lumbar lordosis distance and lumbar lordosis angle were measured.The differences were compared by paired samplest test or Wilcoxon signed-rank test.Results There were significant differences for 24 subjects in lumbar Cobb's angle[(31.05±13.65)° vs.(27.95±11.81)°,t=2.647,P=0.014],lumbar lordosis distance[(2.32±0.75)cm vs.(1.96±0.75)cm,t=8.141,P<0.001],lumbar lordosis angle[(34.58±11.90)° vs.(30.51±11.14)°,t=4.178,P<0.001],and lumbar height(Z=2.015,P=0.044)between weight-bearing MRI and recumbent MRI.No difference in four-line Cobb's angle(t=0.656,P=0.519)and sacral angle(t=-1.881,P=0.073)was demonstrated.Conclusions The importance of weight-bearing imaging in evaluating the lumbar lordosis is validated.
Magnetic resonance imagingLumbar vertebraeLordosisWeight-bearingSupine position
NETL
NSTL
万方数据
