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Table 2 Union rate of spondylolysis with reference to CT classification

From: Repair of symptomatic bilateral L5 spondylolysis with autogenous iliac crest graft and temporary intersegmental pedicle screw fixation in youth

Time (postop)

Type I

Type II

Type III

6 months

86.1% (31/36)

7.1% (9/126)

3.1% (1/32)

9 months

100.0% (36/36)

43.7% (55/126)

9.4% (3/32)

12 months

100.0% (36/36)

84.1% (106/126)

53.1% (17/32)

24 months

100.0% (36/36)

96.8% (122/126)

78.1% (25/32)