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Table 2 Comparison of pre-op and post-op radiological ankle parameters

From: Increased medial talar tilt may incite ankle pain and predispose ankle osteoarthritis after correction of severity of knee varus deformity among patients undergoing bilateral total knee arthroplasty: a prospective observation

Variables

Pre-operative radiological ankle parameters (mean, SD, 95%CI)

Post-operative radiological ankle parameters (mean, SD)

P value

Tibio-talar angle (TTA) [in degrees]

93.10, 3.67, 92.44–93.27

93.28, 4.77, 92.42–94.13

0.654a

Tibial Anterior Surface angle (TAS) [in degrees]

93.13, 3.52, 92.5–93.76

93.63, 3.95, 92.93, 94.34

0.141a

Lateral distal tibial angle (LDTA) [in degrees]

86.49, 7.79, 85.09–87.89

86.96, 3.5, 86.33–87.59

0.512a

Talar-Tilt angle (TT) [in degrees]

0.98, 0.89, 0.09–1.38

1.14, 1.14, 0.93–1.34

0.020a

Anatomical talo-crural angle (aTC) [in degrees]

84.6, 4.03, 83.88–85.32

84.09, 4.48, 83.29–84.89

0.248a

Tibial plateau and tibial plafond angle (PP) [in degrees]

4.53, 3.05, 3.9–5.08

3.37, 2.81, 3.25–4.25

0.019a

Ground surface and distal tibial plafond angle (GP) [in degrees]

5.48, 4.02, 4.7–6.20

2.92, 2.29, 2.51–3.33

0.001a

Ground surface and upper surface of talus angle (GT) [in degrees]

5.29, 4.06, 4.56–6.02

2.83, 2.33, 2.41–3.25

0.001a

  1. P-valuea—calculated using Paired T test, significant P value has been shown in bold type