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Table 1 Fusion levels and indications for fusion in groups A and B

From: Influence of pelvic incidence-lumbar lordosis mismatch on surgical outcomes of short-segment transforaminal lumbar interbody fusion

   Group A (n = 22) Group B (n = 30)
Number of fusion levels   1.1 ± 0.4 1.4 ± 0.5a
Level of fusion (No. of cases)   
One level L3-L4 0 1
  L4-L5 16 12
  L5-S1 4 5
Two levels L3-L4-L5 1 9
  L4-L5-S1 1 3
Indications for fusion    
Degenerative spondylolisthesis 14 19
Spondylolytic spondylolisthesis 2 1
Spinal canal stenosis 6 10
  1. aStatistically significant difference p < 0.05