Number of patients with a degenerative change split by gender
| Total (n=648) | Female (n=345) | Male (n=303) | |
| MRI | |||
| Canal stenosis | 12 (1.9) | 6 (1.7) | 6 (2.0) |
| Extrusion | 106 (16.4) | 61 (17.7) | 45 (14.9) |
| High-intensity zone | 172 (26.5) | 96 (27.8) | 76 (25.1) |
| Modic type I | 48 (7.4) | 32 (9.3) | 16 (5.3) |
| Modic type II | 31 (4.7) | 17 (4.9) | 14 (4.6) |
| Protrusion | 108 (16.7) | 62 (17.9) | 46 (15.2) |
| Disc degeneration grade >2 | 278 (42.9) | 150 (43.5) | 128 (42.2) |
| Schmorls node without oedema | 238 (36.7) | 102 (29.6) | 136 (44.9) |
| Schmorls node with oedema | 18 (2.8) | 6 (1.7) | 12 (4.0) |
| Radiographs | |||
| Loss of disc height | 146 (22.5) | 73 (21.2) | 73 (24.1) |
| Osteophytes | 94 (14.5) | 49 (14.2) | 45 (14.9) |
| Sclerosis | 80 (12.3) | 45 (13.0) | 35 (11.6) |
| Facet joint osteoarthritis | 17 (2.6) | 7 (2.0) | 10 (3.3) |
| Schmorls node | 29 (4.5) | 14 (4.1) | 15 (4.9) |