Table 3 Radiographic results including patella height

Number of knees

48

92

Mechanical axis (°)^a

 Preoperative

Valgus 0.7 ± 8.6 (−18.6 to 17.4)

Varus 5.4 ± 8.9 (−23.9 to 24.9)

< 0.001

  Varus knees (n = 24/72)

Varus 6.4 ± 4.7 (−18.6 to −1.0)

Varus 9.0 ± 5.3 (−23.9 to −0.9)

0.036

  Valgus knees (n = 24/20)

Valgus 7.8 ± 4.9 (1.1–17.4)

Valgus 7.6 ± 6.7 (0.5–24.9)

0.913

 Postoperative

Valgus 0.6 ± 2.3 (−4.2 to 5.2)

Valgus 0.3 ± 1.9 (−3.8 to 4.8)

0.467

  Aligned knees with mechanical axis of ≤ ±3°

39

84

0.084

  Outlier of > ±3°

9

8

Position of components (°)

 α angle

95.9 ± 1.7 (93.1–100.9)

95.9 ± 1.7 (92.2–102.1)

0.990

 β angle

89.7 ± 1.4 (86.6–92.4)

90.5 ± 1.6 (87.1–93.7)

0.206

 γ angle

4.6 ± 2.2 (0.8–8.9)

3.2 ± 1.8 (0.5–8.4)

0.105

 δ angle

87.7 ± 2.4 (82.4–91.8)

87.3 ± 2.1 (81.3–92.3)

0.248