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Mean preop VAS and mean VAS at final followup of each individual surgical group
| Surgery type | Preop VAS | VAS at last follow-up |
|---|---|---|
| Mini open VP | 77/10 = 7.7 | 33/10 = 3.3 |
| TPD | 103/14 = 7.35 | 45/14 = 3.21 |
| PSO | 82/10 = 8.2 | 28/10 = 2.8 |
| IBR with cage | 49/6 = 8.1 | 19/6 = 3.1 |
