Table 2.
Dimensions of parameters with regard to the lumbar endplate (Mean ± SD).
| Parameter | Sex | T12 | L1 | L2 | L3 | L4 | L5 | S1 |
| uEPL∗∗ | M | – | 32.55 ± 2.01 | 34.46 ± 2.15 | 35.92 ± 2.45 | 36.26 ± 2.56 | 36.57 ± 2.69 | 33.27 ± 1.99 |
| (mm) | F | – | 28.98 ± 1.98∗ | 30.47 ± 2.15∗ | 32.44 ± 2.41∗ | 32.93 ± 2.55∗ | 33.17 ± 2.59∗ | 30.83 ± 2.14∗ |
| uEPW∗∗ | M | – | 44.00 ± 2.70 | 46.56 ± 2.92 | 49.06 ± 2.99 | 51.98 ± 2.81 | 54.01 ± 3.01 | 52.79 ± 4.18 |
| (mm) | F | – | 39.39 ± 2.49∗ | 41.47 ± 2.80∗ | 44.01 ± 3.15∗ | 46.85 ± 3.55∗ | 49.82 ± 4.12∗ | 47.94 ± 4.07∗ |
| lEPL∗∗ | M | 31.91 ± 2.04 | 33.59 ± 2.14 | 35.18 ± 2.37 | 35.74 ± 2.45 | 36.36 ± 2.53 | 34.43 ± 2.07 | – |
| (mm) | F | 28.51 ± 2.19∗ | 29.73 ± 2.17∗ | 31.71 ± 2.49∗ | 32.44 ± 2.46∗ | 32.67 ± 2.39∗ | 31.75 ± 1.81∗ | – |
| lEPW∗∗ | M | 43.58 ± 3.07 | 47.11 ± 3.09 | 49.48 ± 3.14 | 52.71 ± 2.99 | 54.69 ± 2.64 | 54.41 ± 2.85 | – |
| (mm) | F | 38.97 ± 2.41∗ | 41.90 ± 2.76∗ | 44.42 ± 3.03∗ | 47.56 ± 3.52∗ | 49.96 ± 3.39∗ | 49.76 ± 3.37∗ | – |
| EPL/EPW∗∗ | M | 75.21 ± 4.23 | 73.92 ± 9.43 | 73.22 ± 6.45 | 74.07 ± 5.67 | 71.04 ± 8.66 | 70.34 ± 7.53 | 67.82 ± 5.53 |
| (%) | F | 74.25 ± 5.67 | 73.53 ± 7.87 | 73.71 ± 7.44 | 73.24 ± 5.23 | 71.34 ± 7.54 | 70.21 ± 6.45 | 68.23 ± 4.34 |
| uEQL∗∗ | M | – | 30.42 ± 2.78 | 32.01 ± 2.43 | 34.64 ± 2.77 | 35.17 ± 3.11 | 34.38 ± 2.54 | 31.42 ± 2.12 |
| (mm) | F | – | 28.12 ± 2.34∗ | 30.02 ± 2.46∗ | 32.18 ± 2.98∗ | 33.05 ± 2.87∗ | 32.31 ± 2.34∗ | 28.64 ± 2.42∗ |
| lEQL∗∗ | M | 29.62 ± 2.63 | 31.21 ± 3.11 | 32.52 ± 2.93 | 34.63 ± 2.56 | 34.38 ± 2.48 | 33.65 ± 3.11 | – |
| (mm) | F | 27.11 ± 2.34∗ | 29.15 ± 3.03∗ | 29.99 ± 3.21∗ | 32.35 ± 2.38∗ | 32.18 ± 2.35∗ | 31.11 ± 3.22∗ | – |
| uPEA∗∗ | M | – | 159.06 ± 7.12 | 165.95 ± 6.36 | 171.45 ± 7.54 | −178.96 ± 9.87 | -168.24 ± 9.42 | −171.72 ± 12.02 |
| (degrees) | F | – | 162.13 ± 5.23 | 166.43 ± 5.95 | 175.04 ± 7.75 | −178.54 ± 17.95 | −171.96 ± 7.22 | −171.13 ± 11.32 |
| lPEA∗∗ | M | 158.02 ± 7.22 | 162.72 ± 5.64 | 171.84 ± 5.84 | −179.03 ± 7.93 | −164.83 ± 5.84 | −155.14 ± 6.38 | – |
| (degrees) | F | 163.01 ± 5.53 | 164.46 ± 4.65 | 171.13 ± 5.33 | −179.85 ± 9.76 | −168.86 ± 12.14 | −155.27 ± 8.23 | – |
| uECD | M | – | 1.57 ± 0.54 | 1.75 ± 0.55 | 1.72 ± 0.80 | 1.69 ± 0.78 | 1.58 ± 0.62 | 1.14 ± 1.19 |
| (mm) | F | – | 1.80 ± 0.52∗ | 1.81 ± 0.52 | 1.70 ± 0.46 | 1.71 ± 0.54 | 1.70 ± 0.51 | 1.18 ± 0.73 |
| lECD∗∗ | M | 1.82 ± 0.43 | 1.67 ± 0.52 | 1.88 ± 0.58 | 2.06 ± 0.73 | 2.04 ± 0.73 | 2.41 ± 1.03 | – |
| (mm) | F | 2.12 ± 0.53∗ | 2.01 ± 0.52∗ | 2.11 ± 0.56 | 2.34 ± 0.56 | 2.26 ± 0.53 | 2.32 ± 0.64 | – |
| uECA∗∗ | M | – | 43.83 ± 14.21 | 45.12 ± 11.82 | 49.16 ± 12.38 | 52.13 ± 9.35 | 60.16 ± 10.22 | 50.28 ± 12.22 |
| (%) | F | – | 42.23 ± 13.11 | 47.29 ± 12.67 | 49.32 ± 9.63 | 52.26 ± 11.76 | 58.25 ± 11.23 | 48.32 ± 14.62 |
| lECA∗∗ | M | 48.12 ± 11.11 | 54.23 ± 14.42 | 57.34 ± 9.65 | 56.92 ± 7.24 | 56.21 ± 8.63 | 65.63 ± 7.36 | – |
| (%) | F | 52.32 ± 10.37 | 55.67 ± 10.29 | 59.26 ± 6.97 | 56.87 ± 5.62 | 55.27 ± 8.87 | 63.73 ± 7.32 | – |
∗
Significant difference compared with males (P < .05).
∗∗
Significant difference in one-way ANOVA (P < .05).
(“+” means an angle protruding ventrally, and “−“ means an angle protruding dorsally).
u/lECA = upper or lower endplate concavity apex location, u/lECD = upper or lower endplate concavity depth, u/lEPL = upper or lower endplate length, u/lEPW = upper or lower endplate width, u/lEQL = upper or lower endplate quartering length, u/lPEA = upper or lower posterior endplate angle.