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Table 3 Relationship between preoperative disc and facet joint status and disc degeneration

From: Risk factor analysis of disc and facet joint degeneration after intersegmental pedicle screw fixation for lumbar spondylolysis

  L4/5 L5S1
DHI decrease ≥ 10% (n) DHI decrease < 10% (n) F value p value DHI decrease ≥ 10% (n) DHI decrease < 10% (n) F value p value
Facet grade pre-operation    0.000 1.000    4.934 0.026*
Degeneration 8 32    9 34   
No degeneration 3 11    6 5   
Disc grade pre-operation    0.002* 0.964    0.006 0.937
Degeneration 8 34    12 29   
No degeneration 3 9    3 10   
  1. DH, disc height; DHI, disc height index
  2. *Test was considered statistically significant at p < 0.05