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Table 3 Fusion rate between two groups

From: Postoperative spinal orthosis may not be necessary for minimally invasive lumbar spine fusion surgery: a prospective randomized controlled trial

  Group A (n = 42) Group B (n = 42) P value
BSF classification by CT scan (n, %)    1.000
 BSF-1 0 (0%) 0 (0%)  
 BSF-2 3 (7.1%) 2 (4.8%)  
 BSF-3 39 (92.9%) 40 (95.2%)  
Fusion rate (%)
 6-month 83% 81% 0.928
 12-month 100% 100.0%  
  1. BSF Brantigan-Steffee-Fraser