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Table 3 Summary of MRI evaluation

From: Radiographic and clinical outcome of lateral lumbar interbody fusion for extreme lumbar spinal stenosis of Schizas grade D: a retrospective study

ParameterGradepreoperativepostoperativeChange valueChange rate %P
Midsagittal canal diameterA10.96 ± 2.6912.43 ± 2.451.48 ± 1.1615.85 ± 17.580.011
 B9.27 ± 2.3511.30 ± 2.492.03 ± 1.6924.42 ± 21.490.249
 C7.37 ± 2.199.58 ± 2.292.18 ± 1.7441.37 ± 76.160.362
 D4.39 ± 2.526.89 ± 2.402.50 ± 1.2579.69 ± 86.23
Axial central canal areaA161.43 ± 56.25185.00 ± 51.9323.57 ± 15.1417.12 ± 13.240.073
 B128.11 ± 47.55148.68 ± 49.1820.57 ± 15.6818.58 ± 15.510.222
 C81.96 ± 25.90103.40 ± 31.7421.44 ± 20.0729.64 ± 27.730.104
 D32.61 ± 11.1049.72 ± 17.4716.11 ± 10.7052.91 ± 34.41
  1. This P value is the result of comparison of change value with grade D