Table 3 Visual grading of fat in the multifidus muscles in the two analysis- / treatment groups by level at pre-treatment
|  | Predictor analysis (n = 147) | Analysis of change in fat infiltration (n = 126) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|  | Rehab (n = 64) | Surgery (n = 83) | Rehab (n = 63) | Surgery (n = 63) | ||||||||
Gradea | 0 | 1 | 2 | 0 | 1 | 2 | 0 | 1 | 2 | 0 | 1 | 2 |
L3/L4 (n / %) | 60 (93.8) | 4 (6.3) | 0 (0) | 77 (92.8) | 6 (7.2) | 0 (0) | 60 (95.2) | 3 (4.8) | 0 (0) | 58 (92.1) | 5 (7.9) | 0 (0) |
L4/L5 (n / %) | 48 (75.0) | 16 (25.0) | 0 (0) | 61 (73.5) | 22 (26.5) | 0 (0) | 47 (74.6) | 16 (25.4) | 0 (0) | 49 (77.8) | 14 (22.2) | 0 (0) |
L5/S1 (n / %) | 33 (51.6) | 31 (48.4) | 0 (0) | 36 (43.4) | 46 (55.4) | 1 (1.2) | 32 (50.8) | 31 (49.2) | 0 (0) | 29 (46.0) | 33 (52.4) | 1 (1.6) |