Table 1.
EL and non-EL patient population stratification by pain score and calculated total fat volume. Additionally, the estimated percent of spinal canal epidural fat normalized to the canal diameters at L4–L5 and L5–S1 is shown
| Patient ID | Age (years) | Pain score (1–10) | Total fat volume (mm3) | Spinal canal diameter (mm) | Percent of fat in the canal* | BMI | ||
| Full section | L2–L5 | L4/L5 | L5/S1 | |||||
| Epidural lipomatosis | ||||||||
| P7 Norm | 75.7 | 10 | 6318.5 | 5101.3 | 12.9 | 14.9 | 35.9 | 29.0 |
| P7 Parallel | 75.7 | 10 | 6836.9 | 5183.4 | 12.9 | 14.9 | 38.8 | 29.0 |
| P10 Norm | 71.6 | 7 | 3895.4 | 3228.3 | 15.3 | 13.7 | 22.7 | 34.8 |
| P10 Parallel | 71.6 | 7 | 4407.7 | 3380.6 | 15.3 | 13.7 | 25.7 | 34.8 |
| P8 Norm | 75.0 | 7 | 2119.8 | 1431.1 | 11.4 | 10.9 | 19.4 | 33.6 |
| P8 Parallel | 75.0 | 7 | 2430.7 | 1724.0 | 11.4 | 10.9 | 23.1 | 33.6 |
| P1 Norm | 79.6 | 6 | 6834.5 | 5595.9 | 6.7 | 12.9 | 80.9 | 34.9 |
| P1 Parallel | 79.6 | 6 | 6479.9 | 5408.9 | 6.7 | 12.9 | 79.5 | 34.9 |
| P11 Norm | 46.2 | 5 | 3586.6 | 2640.0 | 13.3 | 11.8 | 22.7 | 36.6 |
| P11 Parallel | 46.2 | 5 | 3390.4 | 2507.0 | 13.3 | 11.8 | 21.4 | 36.6 |
| P5 Norm | 49.5 | 4 | 6497.0 | 4321.7 | 18.0 | 18.7 | 21.9 | 32.3 |
| P5 Parallel | 49.5 | 4 | 6909.5 | 3855.4 | 18.0 | 18.7 | 23.3 | 32.3 |
| P9 Norm | 55.3 | 4 | 3489.2 | 2301.6 | 16.8 | 12.9 | 17.4 | 22.7 |
| P9 Parallel | 55.3 | 4 | 3672.6 | 2007.5 | 16.8 | 12.9 | 18.3 | 22.7 |
| Means | 64.71 | 6.14 | 4776.33 | 3477.62 | 13.49 | 13.69 | 32.21 | 31.99 |
| No epidural lipomatosis | ||||||||
| Older | ||||||||
| P6 Norm | 70.4 | 5 | 1494.6 | 939.8 | 13.7 | 12.6 | 11.5 | 28.9 |
| P6 Parallel | 70.4 | 5 | 1308.4 | 815.0 | 13.7 | 12.6 | 10.5 | 28.9 |
| P3 Norm | 70.6 | 3 | 4763.5 | 2662.6 | 16.4 | 17.6 | 18.1 | 33.8 |
| P3 Parallel | 70.6 | 3 | 5689.0 | 2717.5 | 16.4 | 17.6 | 21.6 | 33.8 |
| Means | 70.48 | 4.00 | 3313.86 | 1783.75 | 15.05 | 15.10 | 15.41 | 31.35 |
| Younger | ||||||||
| P2 Norm | 33.0 | 4 | 9615.5 | 5861.1 | 12.3 | 11.3 | 64.7 | 36.5 |
| P2 Parallel | 33.0 | 4 | 9189.2 | 5654.8 | 12.3 | 11.3 | 61.8 | 36.5 |
| P4 Norm | 31.6 | 2 | 4989.0 | 3872.5 | 9.4 | 9.8 | 52.2 | 24.2 |
| P4 Parallel | 31.6 | 2 | 5234.0 | 4157.5 | 9.4 | 9.8 | 54.8 | 24.2 |
| Means | 32.27 | 3.00 | 7256.91 | 4886.46 | 10.85 | 10.55 | 58.36 | 30.35 |
*Estimated using the mean diameter of the canal measured at L4/L5 and L5/S1 to approximate the total canal size.
BMI, body mass index; EL, epidural lipomatosis.