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Table 3 Association analysis between risk factors and implant-related complications

From: Risk factors for construct/implant related complications following primary posterior hemivertebra resection: Study on 116 cases with more than 2 years’ follow-up in one medical center

Risk Factors Implant-related complications Non-implant-related complications
Yes (n=7) No (n=109)
Sex
 Male 2 (28.6 %) 60 (55 %)
 Female 5 (71.4 %) 49 (45 %)
Age
 ≤5 years/old 5 (71.4 %) 29 (26.6 %)
 5−10 years/old 1 (14.3 %) 21 (19.3 %)
 >10 years/old 1 (14.3 %) 59 (54.1 %)
Location
 lumbar spine 4 (57.1 %) 16 (14.7 %)
 others 3 (42.9 %) 93 (85.3 %)
Fusion levels
 bisegmental fusion 5 (71.4 %) 31 (28.4 %)
 others 2 (28.6 %) 78 (71.6 %)
Cage
 Yes 0 (0) 15 (11 %)
 No 7 (100 %) 94 (89 %)
Contralateral bar/rib synostosis
 Yes 0 (0) 5 (6.1 %)
 No 7 (100 %) 104 (93.9 %)
Main curve
 <40° 4 (57.1 %) 37 (33.9 %)
 ≥40° 3 (42.9 %) 62 (66.1 %)
Correction rate of main curve
 ≤80 % 4 (57.1 %) 72 (66.1 %)
 >80 % 3 (42.9 %) 37(33.9 %)
Segmental scoliosis
 <30° 3 (42.9 %) 39 (35.8 %)
 ≥30° 4 (57.1 %) 70 (64.2 %)
Correction Rate of segmental scoliosis
 ≤80 % 3 (42.9 %) 43 (39.4 %)
 >80 % 4 (57.1 %) 66 (60.6 %)
  1. Statistical analysis between the groups could not be done owing to the low numbers of cases with implant-related complications in this study