Table 2.
Bone densitometry and radiographic parameters.
| DDD | Spinal stenosis | Degenerative spondylolisthesis | P value | |
|---|---|---|---|---|
| BMC (g) | ||||
| L4 | 14.29 (4.21) | 16.70 (2.59) | NA | 0.35 |
| L3 | 14.42 (5.99) | 18.48 (4.90) | 13.42 (3.41) | 0.02 |
| L2 | 12.65 (4.16) | 15.20 (4.70) | 11.45 (2.78) | 0.01 |
| L1 | 11.96 (4.39) | 12.57 (3.91) | 10.20 (2.94) | 0.08 |
| BMD (g/cm2) | ||||
| L4 | 0.812 (0.141) | 1.059 (0.347) | NA | 0.35 |
| L3 | 0.847 (0.290) | 1.122 (0.215) | 0.942 (0.175) | 0.04 |
| L2 | 0.874 (0.254) | 0.993 (0.210) | 0.873 (0.206) | 0.10 |
| L1 | 0.851 (0.232) | 0.884 (0.198) | 0.794 (0.175) | 0.22 |
| T-score | ||||
| L4 | −2.90 (1.32) | −0.65 (3.34) | NA | 0.35 |
| L3 | −2.22 (2.68) | 0.26 (1.95) | −1.33 (1.58) | 0.06 |
| L2 | −1.60 (2.41) | −0.56 (1.85) | −1.52 (1.95) | 0.17 |
| L1 | −0.89 (2.19) | −0.68 (1.71) | −1.36 (1.62) | 0.33 |
| Z-score | ||||
| L4 | −1.60 (1.83) | 0.96 (4.02) | NA | 0.35 |
| L3 | −0.80 (3.17) | 1.78 (2.08) | 0.79 (1.76) | 0.13 |
| L2 | −0.07 (2.88) | 1.10 (1.94) | 0.49 (2.26) | 0.42 |
| L1 | 0.51 (2.48) | 0.86 (1.76) | 0.43 (1.86) | 0.73 |
| Overall | ||||
| BMC (g) | 41.27 (21.27) | 31.10 (16.49) | 28.58 (12.12) | 0.38 |
| BMD (g/cm2) | 0.884 (0.219) | 0.954 (0.205) | 0.855 (0.179) | 0.11 |
| T-score | −1.32 (2.28) | −0.52 (1.75) | −1.42 (1.70) | 0.10# |
| Z-score | 0.20 (2.68) | 1.09 (1.81) | 0.51 (2.20) | 0.43* |
| Bone status | 0.05 | |||
| Normal | 4 (57%) | 34 (61%) | 8 (44%) | |
| Osteopenia | 1 (14%) | 17 (30%) | 3 (17%) | |
| Osteoporosis | 2 (29%) | 5 (9%) | 7 (39%) | |
| Disc height | ||||
| L4-L5 | 0.25 (0.03) | 0.25 (0.02) | NA | 0.64 |
| L3-L4 | 0.20 (0.05) | 0.21 (0.06) | 0.22 (0.06) | 0.62 |
| L2-L3 | 0.15 (0.04) | 0.18 (0.05) | 0.18 (0.05) | 0.43 |
| L1-L2 | 0.12 (0.05) | 0.16 (0.04) | 0.13 (0.06) | 0.23 |
| Osteophyte score | ||||
| L4-L5 | 0.75 (0.65) | 2.00 (0.00) | NA | 0.06 |
| L3-L4 | 1.20 (0.57) | 1.38 (0.82) | 0.67 (0.43) | 0.10 |
| L2-L3 | 1.38 (0.48) | 1.42 (0.86) | 0.89 (0.53) | 0.07 |
| L1-L2 | 1.50 (0.58) | 1.27 (0.83) | 1.07 (0.62) | 0.47 |
| Vertebral wedging | ||||
| L4 | 1.05 (0.06) | 0.99 (0.06) | NA | 0.35 |
| L3 | 0.96 (0.06) | 1.01 (0.08) | 1.01 (0.05) | 0.27 |
| L2 | 0.90 (0.02) | 0.93 (0.08) | 0.95 (0.10) | 0.48 |
| L1 | 0.99 (0.26) | 0.90 (0.10) | 0.93 (0.09) | 0.51 |
| Lordosis | 19° (18°) | 24° (15°) | 30° (11°) | 0.21 |
Difference in bone densitometry and radiographic parameters between the three diagnostic groups.
when performing two-group comparison of spinal stenosis and degenerative spondylolisthesis # P = 0.04, *P = 0.26.
Values are mean (sd) or n (%). NA: not applicable.