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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)