Table 1.
Comparison and correlations in SCSA (mm2) and DFF (%) for paravertebral muscles of different Pfirrmann gradings (x ± s)
| Pfirrmann grading | Number of discs (240) | Paravertebral muscle (IWS before) |
Paravertebral muscle (IWS after) |
Paravertebral muscle (IWOS before) |
Paravertebral muscle (IWOS after) |
||||
|---|---|---|---|---|---|---|---|---|---|
| SCAS | DFF | SCAS | DFF | SCAS | DFF | SCAS | DFF | ||
| I | 14 | 60.42 ± 14.69 | 9.16 ± 2.41 | 59.05 ± 18.41 | 10.00 ± 2.25 | 67.44 ± 12.58 | 11.46 ± 1.76 | 66.73 ± 17.26 | 10.65 ± 1.95 |
| II | 78 | 56.42 ± 15.28 | 12.41 ± 2.77 | 56.10 ± 17.78 | 11.50 ± 2.45 | 61.57 ± 14.93 | 12.17 ± 1.91 | 63.78 ± 15.77 | 12.23 ± 2.25 |
| III | 101 | 52.53 ± 13.91 | 14.48 ± 2.36 | 54.69 ± 15.05 | 14.74 ± 2.08 | 59.51 ± 15.96 | 13.32 ± 1.87 | 64.97 ± 13.75 | 12.92 ± 1.83 |
| IV | 31 | 48.86 ± 12.20 | 15.17 ± 1.79 | 50.01 ± 12.43 | 14.56 ± 2.30 | 59.89 ± 14.43 | 14.06 ± 1.61 | 53.66 ± 10.42 | 13.96 ± 1.88 |
| V | 16 | 48.83 ± 12.83 | 14.04 ± 2.51 | 46.30 ± 14.49 | 14.10 ± 2.73 | 55.15 ± 14.67 | 14.40 ± 1.91 | 51.54 ± 12.13 | 13.96 ± 2.09 |
| r | -0.216 | 0.430 | -0.152 | 0.499 | -0.137 | 0.435 | -0.236 | 0.346 | |
| p | 0.001 | 0.000 | 0.019 | 0.000 | 0.034 | 0.000 | 0.000 | 0.000 | |
SCSA Standard cross-sectional area, DFF Degree of fatty infiltration, IFC Interferential current, IWS Intervertebral disc degeneration patients with sarcopenia, IWOS Intervertebral disc degeneration patients without sarcopenia
*P < 0.05, statistically significant differences. Before IFC stimulation: r = -0.216, r = 0.430; r = -0.137, r = 0.435; After IFC stimulation: r = -0.152, r = 0.499; r = -0.236, r = 0.346