Table 3.
Number of responders to thalamic DBS during follow-up (VAS average pain scores).
| FU I | FU II | FU III | FU IV | |||||
|---|---|---|---|---|---|---|---|---|
| ≥50% | ≥30% | ≥50% | ≥30% | ≥50% | ≥30% | ≥50% | ≥30% | |
| All available patients | 17/33 | 21/33 | 15/30 | 20/30 | 13/25 | 17/25 | 10/18 | 16/18 |
| Facial pain | 3/5 | 3/5 | 4/5 | 4/5 | 3/5 | 3/5 | 2/5 | 4/5 |
| CRPS | 4/7 | 5/7 | 3/7 | 3/7 | 2/5 | 2/5 | 2/3 | 3/3 |
| Poststroke/central(except thalamus) | 4/7 | 6/7 | 3/7 | 6/7 | 2/6 | 5/6 | 2/4 | 4/4 |
| Spinal cord lesion | 1/3 | 1/3 | 1/2 | 1/2 | 1/1 | 1/1 | 0/1 | 0/1 |
| Brachial plexus injury | 2/3 | 2/3 | 2/3 | 2/3 | 2/3 | 3/3 | 3/3 | 3/3 |
| Postherpetic pain | 3/3 | 3/3 | 2/2 | 2/2 | 2/2 | 2/2 | 1/1 | 1/1 |
| Central thalamic | 0/1 | 1/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| Other | 0/4 | 0/4 | 0/4 | 2/4 | 1/3 | 1/3 | 0/1 | 1/1 |
| FBSS | 0/2 | 0/2 | 0/2 | 1/2 | 1/1 | 1/1 | 0/0 | 0/0 |
| Peripheral nerve | 0/1 | 0/1 | 0/1 | 1/1 | 0/1 | 0/1 | 0/1 | 1/1 |
| Phantom limb | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/0 | 0/0 |
The number of responders defined by improvement of the VAS average pain score by ≥50% and by ≥30% is shown in relation to the total number of patients for whom follow-up was available in the corresponding follow-up period.