Clinical Study
Interspinous Spacer Implant in Patients with Lumbar Spinal Stenosis: Preliminary Results of a Multicenter, Randomized, Controlled Trial
| Characteristic | Superion () | X-Stop () |
| Anesthesia, n (%)* | | | General | 68 (85) | 79 (92) | Conscious sedation | 12 (15) | 7 (8) | Local | 7(9) | 4 (5) |
| Number of devices, n (%) | | | One | 40 (50) | 38 (44) | Two | 40 (50) | 48 (56) |
| Device size, n (%) | | | 6 mm | NA | 2 (2) | 8 mm | 1 (1) | 5 (4) | 10 mm | 15 (12) | 38 (28) | 12 mm | 32 (27) | 51 (38) | 14 mm | 63 (52) | 34 (25) | 16 mm | 9 (8) | NA | NR | 0 (—) | 4 (3) |
| Procedure time, median, mins | 55 | 45 | Procedural blood loss, median, cc | 10 | 25 |
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*The sum of percentages is greater than 100% because more than one anesthesia type was used in some patients. NR, not reported. NA, not applicable.
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