Table 3.
Baseline characteristics of MCs
| Vertebral endplate | No MC | Type of MC (n) | Size of MC (n) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Type I | Type II | Type III | Mixed I/II |
Mixed II/III |
Mixed I/III |
EP only | <25 % | 25–50 % | >50 % | ||
| L1 sup. | 95 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| L1 inf. | 94 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 |
| L2 sup. | 88 | 2 | 4 | 0 | 1 | 0 | 1 | 1 | 5 | 0 | 2 |
| L2 inf. | 87 | 4 | 4 | 0 | 0 | 0 | 1 | 2 | 4 | 1 | 2 |
| L3 sup. | 85 | 4 | 6 | 0 | 0 | 0 | 1 | 3 | 2 | 3 | 3 |
| L3 inf. | 82 | 6 | 5 | 0 | 1 | 1 | 1 | 3 | 7 | 1 | 3 |
| L4 sup. | 78 | 8 | 6 | 0 | 2 | 1 | 1 | 4 | 9 | 4 | 1 |
| L4 inf. | 64 | 10 | 18 | 0 | 4 | 0 | 0 | 7 | 6 | 9 | 10 |
| L5 sup. | 62 | 13 | 18 | 0 | 3 | 0 | 0 | 10 | 12 | 9 | 3 |
| L5 inf. | 27 | 28 | 16 | 0 | 16 | 7 | 2 | 2 | 23 | 26 | 18 |
| S1 sup. | 32 | 29 | 15 | 0 | 13 | 5 | 2 | 12 | 26 | 22 | 4 |
| Total | 794 | 105 | 92 | 0 | 41 | 14 | 10 | 45 | 95 | 75 | 47 |
Baseline distribution of the type and size of MCs allocated on 11 endplate levels from a total of 1,056 endplates from 96 patients with LBP and MCs
sup. superior, inf. inferior, EP endplate