Evaluation value of lumbar magnetic resonance imaging in different positions for intervertebral facet joint effusion
Objective To study the difference in the detection of facet joint effusion in lumbar spine between supine natural and supine anterior flexion positions by magnetic resonance imaging(MRI).Methods Forty-three patients with intervertebral facet joint effusion found by MRI at Laiyang Center Hospital of Yantai City because of lumber spine diseases(lumber pain and numb loser limbs)from December 2021 to May 2022 were selected for the prospective study,including 22 males and 21 females who were(43.2±13.6)years old.The 1.5T superconducting dual gradient MRI scanner was used to perform the paired examination in supine natural position and supine anterior flexion position,and to measure the bilateral facet joint effusion at L3/4 to L5/S1 levels in both positions.The Wilcoxon signed rank test was used to compare the detection amounts of vertebral joint effusion in supine natural position and supine anterior flexion position.Results The amounts of facet joint effusion in the L3/4 and L4/5 in the supine flexion position(L3/4 right:1.09 mm,left:1.12 mm;L4/5 right:1.05 mm,left:1.10 mm)were higher than those in the supine natural position(L3/4 right:0.77 mm,left:0.84 mm;L4/5 right:0.85 mm,left:0.70 mm),with statistical differences(Z=4.114,4.313,3.350,and 3.616;all P＜0.05).There were no statistical difference in the amounts at the L5/S1 level between the two positions(Z=1.368 and 2.085;both P＞0.05).Conclusion MRI examination of the lumbar intervertebral disc in supine flexion position plays a more important role in detecting effusion in vertebral facet joints.
Magnetic resonance imagingLumbar facet joint effusionSupine flexion positionSupine natural position
万方数据
维普
