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Table 2 The tibial component rotational alignment in normal and OA knees

From: Anterior tibial curved cortex is a reliable landmark for tibial rotational alignment in total knee arthroplasty

 

Tibial Component Rotational Alignment

Normal knees (n = 40)

OA knees (n = 120)

Mean ± SD (°)a

Range (°)a

Mean ± SD (°)a

Range (°)a

P valueb

PCL-PT

2.8 ± 4.9

−8.2 ~ 13.2

−1.2 ± 4.7

−13.8 ~ 10.0

< 0.001

PCL-TT1

4.0 ± 4.7

−6.2 ~ 12.2

0.3 ± 5.5

−19.7 ~ 10.6

< 0.001

PCL-TT2

14.7 ± 5.0

5.4 ~ 23.5

9.8 ± 5.4

−8.1 ~ 21.9

< 0.001

PCL-TT3

19.9 ± 5.4

8.4 ~ 28.7

14.8 ± 5.4

0 .3 ~ 27.8

< 0.001

ATCC

1.6 ± 2.8

−1.7 ~ 7.7

0.8 ± 2.7

−7.9 ~ 9.2

0.047

  1. aInternal rotation was denoted as a negative value, and external rotation as a positive value
  2. bStudent’s t-test