Table 2 Comparison of knee prosthesis angle, TFA and PCO between groups (\(\overline{\mathrm x}\) ± s)

Number

21

41

32

19

-

-

femoral prosthesis valgus angle(°)

5.31 ± 1.84

4.90 ± 1.76

5.12 ± 1.71

5.66 ± 1.29

0.939

0.425

femoral prosthesis rotation angle(°)

3.54 ± 0.97

3.48 ± 1.28

3.52 ± 1.26

3.06 ± 1.48

0.669

0.573

tibial prosthesis slope(°)

5.97 ± 1.33

6.34 ± 1.54

5.98 ± 1.48

6.18 ± 1.54

0.459

0.712

tibial prosthesis valgus angle(°)

-0.28 ± 2.07

0.16 ± 2.44

0.18 ± 2.21

-0.24 ± 2.13

0.329

0.804

tibial prosthesis rotation angle(°)

3.05(1.09, 3.87)

3.22(1.52, 4.08)

3.95(2.11, 4.70)

2.91(1.23, 3.47)

3.555

0.314

TFA(°)

5.45 ± 2.97

4.53 ± 3.38

4.66 ± 2.37

4.88 ± 3.17

0.455

0.714

PCO(mm)

28.85 ± 3.19

30.80 ± 2.08^*

31.62 ± 2.97^a

33.66 ± 2.42^b

11.678

< 0.001