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Table 2 Radiographic data of bone graft growth pattern

From: Imaging evaluation of nano-hydroxyapatite/polyamide 66 strut in cervical construction after 1-level corpectomy: a retrospective study of 520 patients

  a b c P ab P ac P bc
Percent of patients 20% (104/520) 75% (390/520) 5% (26/520) < 0.001 < 0.001 < 0.001
Males/females (n) 45/59 211/179 15/11 < 0.001 < 0.001 < 0.001
Mean age 51.85 ± 10.30 56.67 ± 9.06 58.40 ± 8.22 0.7467 0.3389 0.1248
Hospitalization duration (days) 9.25 ± 2.05 8.76 ± 1.99 9.00 ± 2.70 0.1705 0.6479 0.1019
Operative duration (min) 95.25 ± 17.66 99.73 ± 13.10 91.5 ± 15.47 0.5716 0.7616 0.2944
Surgical haemorrhage (ml) 82.75 ± 12.43 93.40 ± 13.86 90.0 ± 20.28 0.0857 0.3105 0.7017
Drainage (ml) 17.00 ± 6.77 17.58 ± 6.17 18.00 ± 7.15 0.9599 0.9515 0.9236
Fusion rate 99% 98% 97% 0.9687 0.9268 0.9715
Subsidence rate 2% 5% 10% 0.0015 < 0.001 < 0.001
Segmental angle (°) 6.16 ± 3.67 7.06 ± 5.67 12.36 ± 6.78 0.4914 < 0.001 < 0.001
C2–C7 Cobb angle (°) 1.57 ± 20.55 5.66 ± 18.05 7.87 ± 13.55 0.023 < 0.001 < 0.001