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Distribution of aetiology.
| Cause of FBSS | N=30 (100%) |
|---|---|
| Recurrent/residual disc prolapse | 16 (53%) |
| Epidural scar | 06 (20%) |
| Disc prolapsed with scar tissue | 03 (10%) |
| Arachnoiditis | 02 (7%) |
| Postoperative discitis | 02 (7%) |
| Malaligned implant | 01 (3%) |
