Age | 43.6 (14.7) |
Sex | |
 Male | 34 |
 Female | 31 |
Dominant side | |
 Lt | 33 |
 Rt | 26 |
 Blt | 6 |
Herniation level | |
 L3/4 | 6 |
 L4/5 | 28 |
 L5/S | 31 |
Pfirrmann classification before surgery | |
 2 | 2 |
 3 | 39 |
 4 | 19 |
 5 | 2 |
 Unable | 3 |
Modic type before surgery | |
 None | 48 |
 1 | 3 |
 2 | 10 |
 3 | 1 |
 Unable | 3 |
Surgidal procedure | |
 C | 31 |
 T | 28 |
 B | 6 |