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Table 1 Patient Demographics and Operative Data

From: Segmental correction of adolescent idiopathic scoliosis by all-screw fixation method in adolescents and young adults. minimum 5 years follow-up with SF-36 questionnaire

Data All ADIS AIS P value
Patient Numbers 49 15 34  
Age at Operation* (years) 18.5(11.7-31.4) 25.0(20.0-31.4) 15.6(11.7-19.8) < 0.001
Risser grade* 3.8 ± 1.4 5.0 3.2 ± 1.4 < 0.001
King type (1:2:3:4:5) (10:16:20:1:2) (1:2:10:0:2) (9:14:10:1:0)  
Lenke type (1:2:3:4:5:6) (30:2:8:0:5:4) (10:2:2:0:1:0) (20:0:6:0:4:6)  
Op method (PSF: ASF + PSF) (42:7) (14:1) (28:6)  
Numbers of fused segments* 10.8(8-13) 10.9(8-14) 10.7(8-13) 0.566
Followup* (years) 6.05 6.62 5.8 0.476
  1. *Data are expressed as mean, with range in parentheses; there were no significant differences between the two groups except in age of operation and Risser grade; ADIS adult-type adolescent idiopathic scoliosis
  2. AIS adolescent idiopathic scoliosis; PSF posterior spinal fusion; ASF anterior spinal fusion