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Table 2 Comparison of perioperative outcomes and radiological parameters between the durotomy and no-durotomy group

From: The impact of incidental durotomy on the outcome of decompression surgery in degenerative lumbar spinal canal stenosis: analysis of the Lumbar Spinal Outcome Study (LSOS) data—a Swiss prospective multi-center cohort study

Outcome Durotomy (n = 15) No durotomy (n = 152) p
Decompression level, n (%)
 L1/L2 1 (6.7) 4 (2.6) 0.94
 L2/L3 6 (40.0) 35 (23.0) 0.25
 L3/L4 10 (66.7) 99 (65.1) 0.99
 L4/L5 11 (73.3) 126 (82.9) 0.57
 L5/S1 2 (13.3) 27 (17.8) 0.94
Levels decompressed, n (%)    0.49
 1 5 (33.3) 50 (32.9)  
 2 5 (33.3) 70 (46.1)  
 ≥ 3 5 (33.3) 32 (21.1)  
OP technique, n (%)    0.90
 Conventional 2 (13.3) 23 (15.1)  
 Microscopic 12 (80.0) 123 (80.9)  
No. of severe stenotic levels, n (%)    0.57
 0a 1 (6.7) 11 (7.2)  
 1 4 (26.7) 48 (31.6)  
 2 4 (26.7) 57 (37.5)  
 ≥ 3 6 (40.0) 36 (23.7)  
No. of mild/moderate stenotic levels, n (%)    0.63
 0b 1 (6.7) 5 (3.2)  
 1 2 (13.3) 13 (8.6)  
 2 5 (33.3) 38 (25.0)  
 ≥ 3 7 (46.7) 96 (63.2)  
  1. aNo severe stenotic levels
  2. bOnly severe stenotic levels