The Value of MRI in the Diagnosis of Lumbar Instability

doi:10.7517/issn.1674-0475.201123

Abstract

Abstract: The purpose of this study was to investigate the value of magnetic resonance imaging (MRI) in the diagnosis of lumbar instability, including the proportion of paravertebral muscle fat infiltration, cross-sectional area and lumbar lordosis. Eighty-seven patients with degenerative lumbar instability were selected as observation group, and 50 healthy subjects were selected as the control group. MRI examination was performed in both groups, the proportion, cross-sectional area and lumbar lordosis of paravertebral muscle fat infiltration were compared between the two groups. The results show that the cross-sectional area of the multifidus muscle and the percentage of fat infiltration in erector spinae in the observation group were significantly lower than those in the control group (P<0.05). The percentage of fat infiltration and lumbar lordosis in the observation group were significantly higher than those in the control group (P<0.05). The MRI parameters of patients with different segmental instability and frymoyer classification in the observation group were statistically significant (P<0.05). The area under the ROC curve of the cross-sectional area and the proportion of fat infiltration of the multifidus muscle in diagnosing multisegment instability were big enough (P<0.05), as well as the fat infiltration proportion in erector spinae and lumbar lordosis. This study confirmed that proportion of fat infiltration and cross-sectional area in paravertebral muscles on MRI have certain application value in the diagnosis of lumbar instability, as well as the lumbar lordosis, which has the highest diagnosis value.

Key words: magnetic resonance imaging, vertebral side, proportion of fat infiltration, cross-sectional area, lumbar lordosis angle, lumbar instability

WANG Shaofeng, MENG Xiaoqing, ZHAO Yulong, YUAN Qian, WEI Yundong. The Value of MRI in the Diagnosis of Lumbar Instability[J]. IMAGING SCIENCE AND PHOTOCHEMISTRY, 2021, 39(4): 517-521.

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