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Table 2 Comparison between computerized tomographic parameters and ASIA classification

From: Analysis of the independent risk factors of neurologic deficit after thoracolumbar burst fracture

  ASIA A
38 cases
ASIA B
17 cases
ASIA C
14 cases
ASIA D
15 cases
ASIA E
21 cases
P value
AO classification 22 58 % 8 47 % 4 29 % 4 27 % 4 19.0 % 0.001
Transverse canal diameter 25.48 (22.65, 27.63) 26.54 (23.84, 28.16) 26.24 (23.44, 28.22) 24.19 (20.64, 28.82) 22.68 (0.01, 27.65) 0.003
Median sagittal diameter 9.76 (7.47, 13.94) 11.02 (7.29, 15.27) 12.03 (7.25, 14.01) 8.95 (6.17, 11.66) 6.27 (0.01, 8.76) 0.001
Compression ratio of median sagittal diameter 0.365 (0.07, 0.502) 0.308 (0.031, 0.504) 0.367 (0.084, 0.574) 0.476 (0.288, 0.788) 0.600 (0.434, 1.000) 0.001
Compression ratio of canal cross-sectional area 0.256 (0.045, 0.435) 0.274 (0.082, 0.445) 0.171 (0.046, 0.565) 0.218 (0.106, 0.44) 0.386 (0.246, 0.839) 0.004
Compression ratios of AVH 0.146 (0.107, 0.294) 0.190 (0.138, 0.276) 0.259 (0.147, 0.309) 0.386 (0.254, 0.47) 0.363 (0.256, 0.454) 0.001
Compression ratios of MVH 0.104 (0.068, 0.185) 0.097 (0.056, 0.17) 0.158 (0.078, 0.225) 0.199 (0.075, 0.277) 0.248 (0.105, 0.343) 0.001
Compression ratios of PVH 0.191 (0.112, 0.281) 0.181 (0.107, 0.247) 0.259 (0.189, 0.341) 0.276 (0.119, 0.387) 0.286 (0.181, 0.392) 0.005
The distance of posterior margin with upper vertebra 4.95 (4.31, 6.12) 5.02 (3.64, 5.92) 4.76 (3.51, 5.86) 5.08 (4.02, 6.49) 4.65 (3.97, 5.15) 0.200
The distance of posterior margin with below vertebra 3.98 (3.27, 4.66) 4.29 (3.25, 5.24) 3.86 (3.21, 4.64) 3.59 (2.76, 4.23) 3.66 (3.36, 4.89) 0.302
Cobb angle 10.3 (8.6, 14.0) 11.3 (2.9, 21.0) 10.7 (7.1, 17.9) 12.9 (10, 18.7) 16.2 (9.4, 22.8) 0.039
Flip angle 16.44 (10.24, 31.59) 15.90 (7.92, 28.3) 32.26 (15.47, 43.6) 28.26 (10.9, 42.31) 21.61 (10.54, 37.64) 0.189
Rotation angle 0.10 (0.1, 4.75) 2.95 (0.1, 3.94) 3.21 (0.1, 5.8) 4.30 (1.96, 5.63) 2.52 (0.1, 5.46) 0.366