Sample | Sex | Mean age, yr | Disc level | Histological grade | Source |
---|---|---|---|---|---|
1 | Male | 57 | L4/L5 | 1 (nondegenerative) | Postmortem |
2 | Male | 46 | L5/S1 | 1 (nondegenerative) | Postmortem |
3 | Male | 37 | L5/S1 | 1 (nondegenerative) | Postmortem |
4 | Male | 57 | L2/L3 | 7 (mildly degenerative) | Postmortem |
5 | Female | 29 | L4/L5 | 9 (degenerative) | Surgical (discectomy) |
6 | Male | 66 | L4/L5 | 9 (degenerative) | Surgical (discectomy) |