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Table 2 Comparison of the angles between the line perpendicular to surgical epicondylar axis (SEA) and different tibial landmarks

From: Tibiofemoral rotation alignment in the normal knee joints among Chinese adults: a CT analysis

Tibial axis

Mean ± SD(°)

Range(°)

95% confidence interval

MEPT

−1.6 ± 4.5

−12.5 ~ 15.5

−2.4 ~ −0.8

M1/3

10.2 ± 5.1

12.2 ~ 23.1

9.2 ~ 11.1

Akagi line

1.4 ± 5.0

−11.3 ~ 15.6

0.5 ~ 2.3

TATa

4.1 ± 5.3

−12.4 ~ 18.3

3.1 ~ 5.0

Insall line

11.9 ± 5.4

−4.4 ~ 24.8

10.9 ~ 12.8

MBTT

3.6 ± 4.8

−11.0 ~ 15.3

2.7 ~ 4.4

ATC1

12.0 ± 6.9

−6.5 ~ 27.1

10.8 ~ 13.3

ATC2

7.2 ± 8.6

−14.6 ~ 25.8

5.6 ~ 8.7

ATC3

7.1 ± 10.4

−20.3 ~ 30.5

5.3 ~ 9.0

ATC4

6.6 ± 13.5

−22.2 ~ 35.0

4.1 ~ 9.0

  1. a the angle between SEA and TAT