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Table 3 Intergroup comparisons of radiographic variables at various timepoints

From: Effectiveness of proximal tibial tubercle transfer in patients with patella baja after total knee arthroplasty

Variables

Native

Pre-TO

Post-TO

Last

p value

CDI

0.78 ± 0.14 (0.47–1.05; 29 missing)

0.63 ± 0.21 (0.12–1.03; 4 missing)

0.72 ± 0.23 (0.22–1.24; 0 missing)

0.59 ± 0.23 (0.21–1.23; 0 missing)

< 0.001

BP

0.74 ± 0.13 (0.49–1.00; 29 missing)

0.61 ± 0.21 (0.11–1.07; 4 missing)

0.66 ± 0.20 (0.22–1.07; 0 missing)

0.58 ± 0.23 (0.20–1.23; 0 missing)

0.001

MIS

1.81 ± 0.28 (1.27–2.32; 29 missing)

1.55 ± 0.35 (0.76–2.15; 4 missing)

1.59 ± 0.41 (1.00–2.83; 0 missing)

1.39 ± 0.38 (0.68–2.30; 0 missing)

< 0.001

  1. Continuous variables are shown as mean ± standard deviation (range; number of missing values)
  2. Significant differences are displayed in bold and italic
  3. CDI Caton-Deschamps index, BP Blackburne-Peel ratio, MIS modified Insall-Salvati index, native before total knee arthroplasty, pre-TO immediately before tuberositas osteotomy, post-TO immediately after tuberositas osteotomy, last final follow-up