Table 2.
Disc height under different postures
| Posture | Disc height | Normal | DDD | DLS |
|---|---|---|---|---|
| Supine | ADH | 10.82 ± 1.79 | 10.59 ± 1.61 | 8.24 ± 3.13 |
| PDH | 6.58 ± 1.78 | 6.13 ± 2.02 | 3.66 ± 1.66#* | |
| Stand upright | ADH | 9.94 ± 1.87 | 9.83 ± 1.85 | 6.60 ± 2.81#* |
| PDH | 5.74 ± 1.53 | 6.07 ± 1.97 | 3.09 ± 1.40#* | |
| Extension | ADH | 11.02 ± 1.05 | 11.13 ± 1.55 | 8.05 ± 3.22#* |
| PDH | 5.50 ± 0.87 | 6.05 ± 2.28 | 2.81 ± 1.70#* | |
| Flexion | ADH | 9.42 ± 2.54 | 9.20 ± 2.34 | 6.39 ± 3.21 |
| PDH | 6.62 ± 2.11 | 6.46 ± 2.00 | 3.32 ± 1.14#* |
ADH anterior disk height, PDH posterior disk height. The value were presented as mean (SD)
Normal normal subject (N = 8), DDD degenerative disc disease (N = 10), DLS degenerative lumbar spondylolisthesis (N = 10)
#,*Both the ADH and PDH were shorter in the DLS group than in the normal and DDD groups