Table 2 Comparison of radiological parameters from pre- to postoperatively
From: Hybrid surgery with PEEK rods for lumbar degenerative diseases: a 2-year follow-up study
Radiological parameters | Preoperation | 2-year follow-up | P value |
|---|---|---|---|
Modified Pfirrmann classification of nonfusion segment | 5.0 ± 1.0 | 4.9 ± 1.1 | 0.102 |
DHI of nonfusion segment | 0.34 ± 0.07 | 0.33 ± 0.05 | 0.233 |
Lordosis of nonfusion segment (°) | 10.5 ± 4.3 | 8.3 ± 3.0 | 0.005 |
Modified Pfirrmann classification of upper adjacent segment | 3.3 ± 1.2 | 3.4 ± 1.2 | 0.655 |
DHI of upper adjacent segment | 0.34 ± 0.04 | 0.33 ± 0.04 | 0.450 |
Lordosis of upper adjacent segment(°) | 9.3 ± 3.6 | 10.7 ± 3.7 | 0.010 |
Lordosis of fixed-segment (°) | 27.5 ± 9.3 | 26.8 ± 6.4 | 0.612 |
Lordosis of fixed-segment at flexion position (°) | 21.2 ± 9.2 | 25.3 ± 6.9 | 0.004 |
Lordosis of fixed-segment at extension position (°) | 31.2 ± 9.4 | 27.8 ± 7.0 | 0.015 |
ROM of fixed-segment (°) | 10.0 ± 3.9 | 2.6 ± 1.2 | 0.000 |
LL (°) | 43.0 ± 14.6 | 44.4 ± 11.0 | 0.411 |
PI (°) | 45.1 ± 9.2 | 45.8 ± 8.8 | 0.225 |